CN103116381B - High-order temperature compensation current generating circuit and current continuous adjusting method - Google Patents
High-order temperature compensation current generating circuit and current continuous adjusting method Download PDFInfo
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- CN103116381B CN103116381B CN201310050832.XA CN201310050832A CN103116381B CN 103116381 B CN103116381 B CN 103116381B CN 201310050832 A CN201310050832 A CN 201310050832A CN 103116381 B CN103116381 B CN 103116381B
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Abstract
The invention discloses a high-order temperature compensation current generating circuit which comprises at least one second-order temperature compensation current generating circuit which further comprises five triodes, namely Q20, Q21, Q22, Q23, Q24, a resistor R20 and an adjusting resistor R21, wherein the five triodes are in electric connection. The invention further discloses a current continuous adjusting method of the high-order temperature compensation current generating circuit. According to the high-order temperature compensation current generating circuit, the triodes are connected through a series parallel mode, the resistor and the adjusting resistor are added in the circuit, and resistance values of the adjusting resistor are adjusted so that collector currents of the triodes connected with a target module can be continuously adjusted, and magnitude and temperature characteristics of a compensation circuit can be matched with the requirement of the target module.
Description
Technical field
The present invention relates to a kind of current generating circuit, particularly relate to a kind of high-order temperature compensated current generating circuit.
The invention still further relates to the current continuity control method that high order temperature compensation current produces circuit.
Background technology
At simulation, numerical model analysis, even all need temperature sensing circuit in totally digital circuit and vary with temperature stable reference voltage source, the linear and stability of its temperature variation directly determines the performance of whole circuit.There is many methods and carry out measuring tempeature, such as thermopair, thermal resistance etc., but thermopair exist signal little, need the shortcomings such as cold junction compensation, cost is also higher.Thermal resistance linearly bad, it is high that the semiconductor temperature sensor of based semiconductor technique then has precision, and good linearity, the feature that volume production cost is low is a kind of excellent temperature sensing device.
In order to reach accurate temperature survey object, we need one to measure with the physical quantity of PTAT.Two areas become 1: N ratio and the V of the identical bipolar transistor of collector current
bEvoltage difference delta V
bEbe a physical quantity completely linear with absolute temperature, the measurement for it realizes thermometric basis.Silicon bandgap benchmark V in addition
bandgapcan by Δ V
bEwith V
bEbe added by a certain percentage and form, greatly about about 1.2V, if design is accurately rationally, V
bandgapthe precision of several ppm can be reached.Δ V
bEwith V
bandgapratio value be a measurable physical quantity, with it, temperature is characterized.
Except temperature sensing circuit, voltage-reference also must have very little temperature coefficient, and energy-gap reference voltage source is the reference voltage source at present with minimum temperature coefficient, and the principles illustrated in energy-gap reference voltage source is as front silicon bandgap benchmark V
bandgapdescribed.
For temperature sensing physical quantity Δ V
bEwith V
bandgapratio R, we can make Taylor expansion according to temperature can be expressed as R=a
0+ a
1* T+a
2* T
2+ a
3* T
3+ .... the design of accurate temperature sensing circuit is exactly make a
2, a
3... the higher order coefficient of temperature is minimum as far as possible, needs the compensation carrying out second order compensation, three rank compensate even more high-order for this reason.The reason producing higher order term is many-sided, such as produces V
bandgapthe V of transistor
bEexponential relationship is had with temperature; In integrated circuits, resistance has larger temperature coefficient, the I made
pTAThaving there is higher order term in electric current, causes the bias current in circuit to occur higher order term.
In like manner, if reference voltage source is made Taylor expansion according to temperature by us can be expressed as V
bandgap=b
0+ b
1* T+b
2* T
2+ ..., the design of reference voltage source is exactly each rank coefficient b making temperature
1, b
2.... minimum as far as possible, need to carry out first compensation phase, second order compensation ..., common band-gap voltage reference has only carried out first compensation phase for this reason, in order to improve the temperature stability of reference voltage source further, the compensation of second order compensation even more high-order also must be carried out.Therefore in order to the reference voltage source circuit of accurate temperature sensing circuit or better temperature characterisitic will be obtained, must to the compensation that it carries out second order compensation, three rank compensate even more high-order.
Summary of the invention
The technical problem to be solved in the present invention is to overcome technological deficiency recited above, provides a kind of high-order temperature compensated current generating circuit, also provides a kind of current continuity control method of high-order temperature compensated current generating circuit simultaneously.
In order to solve technical matters recited above, the present invention takes following technical scheme:
A kind of high order temperature compensation current produces circuit, include at least one second-order temperature compensating current generating circuit, described second-order temperature compensating current generating circuit includes further and is connected constant current source I by five triodes Q20, Q21, Q22, Q23, Q24 of electric connection and the collector of resistance R20 and regulating resistance R21, triode Q20 with base stage
pTAT; The collector of triode Q21 and the emitter of base stage connecting triode Q20, the grounded emitter of triode Q21; The base stage of triode Q22 is connected constant current source I after being connected with the base stage of triode Q20
pTAT, the collector of triode Q22 connects power vd D; The emitter of connecting triode Q20 after the base stage of triode Q23 is connected with the base stage of triode Q21, the grounded emitter of triode Q23; As the collector linking object module of the triode Q24 of output terminal, ground connection after the emitter connection regulating resistance R21 of triode Q24, the emitter of connecting triode Q22 after the base stage of triode Q24 is connected with the collector of triode Q23, ground connection after the base stage contact resistance R20 of triode Q24.
Constant current source I
pTATbe one with the current source of PTAT.
The area ratio of described triode Q20, Q21, Q22, Q23, Q24 is: A
q20: A
q21: A
q22: A
q23: A
q24=N
0: N
1: N
2: N
3: N
4, wherein scale-up factor N
ibe the natural number being more than or equal to 1, i ∈ [0,4], and i is integer.
Described object module is temperature sensor, high precision reference source of stable pressure or data converter etc.
Also include the three rank temperature-compensated currents formed on the basis of second-order temperature compensating current generating circuit and produce circuit, the collector that three described rank temperature-compensated currents generation circuit also include five triodes Q30, Q31, Q32, Q33, Q34 and resistance R30 and regulating resistance R31, triode Q30 is connected constant current source I with base stage
pTAT, the collector of the emitter connecting triode Q20 of triode Q30; The emitter of connecting triode Q30 after the base stage of triode Q22 is connected with the base stage of triode Q20; The base stage of triode Q31 is connected constant current source I after being connected with the base stage of triode Q30
pTAT, the collector of triode Q31 connects power vd D, the emitter base stage of connecting triode Q32 and the collector of triode Q22 simultaneously of triode Q31; The collector of triode Q32 connects power vd D, and triode Q32 emitter is the base stage of connecting triode Q34 and the collector of triode Q33 simultaneously; The emitter of connecting triode Q20 after the base stage of triode Q33 is connected with the base stage of triode Q21, the grounded emitter of triode Q33; As the collector linking object module of the triode Q34 of output terminal, ground connection after the base stage contact resistance R30 of triode Q34, ground connection after the emitter connection regulating resistance R31 of triode Q34.
The area ratio of described triode Q20, Q21, Q22, Q23, Q24, Q30, Q31, Q32, Q33, Q34 is: A
q20: A
q21: A
q22: A
q23: A
q24: A
q30: A
q31: A
q32: A
q33: A
q34=N
0: N
1: N
2: N
3: N
4: N
5: N
6: N
7: N
8: N
9, wherein scale-up factor N
ibe the natural number being more than or equal to 1, i ∈ [0,9], and i is integer.
Also include and produce at n rank temperature-compensated current the n+1 rank temperature-compensated current generation circuit that the basis of circuit is formed, n >=3.
High order temperature compensation current as described above produces a current continuity control method for circuit, when carrying out the adjustment of second-order temperature offset current, first by resize ratio coefficient N
imake the electric current I o21 of the collector of triode Q22 for not temperature variant constant current with the value of resistance R20; And then by resize ratio coefficient N
iwith regulating resistance R21, thus regulate the size of the collector current Io20 of triode Q24 continuously, the size of collector current Io20 and temperature characterisitic can be matched with the requirement of object module, wherein i ∈ [0,4], and i is integer.
On the basis of carrying out the adjustment of second-order temperature offset current, carry out three rank temperature-compensated currents and regulate, when carrying out three rank temperature-compensated currents and regulating, first by resize ratio coefficient N
ithe electric current I o32 of the collector of the electric current I o31 of the collector of triode Q32 and triode Q31 is made to be not temperature variant constant current with the value of resistance R30, R20; And then by resize ratio coefficient N
iwith regulating resistance R31, thus regulate the size of the collector current Io30 of triode Q34 continuously, the size of collector current Io30 and temperature characterisitic can be matched with the requirement of object module, wherein i ∈ [0,9], and i is integer.
On the basis of carrying out the temperature-compensated current adjustment of n rank, carry out n+1 rank temperature-compensated current and regulate, n >=3, and n is integer.
High order temperature compensation current provided by the invention is produced circuit and is connected by series-parallel mode by triode, and add resistance and regulating resistance in circuit, by adjusting the resistance of regulating resistance, thus make the collector current continuously adjustabe of the triode be connected with object module, the size of offset current and temperature characterisitic can be matched with the requirement of object module.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of traditional second-order temperature compensating current generating circuit.
Fig. 2 is the circuit structure diagram of second-order temperature compensating current generating circuit of the present invention.
Fig. 3 is the circuit structure diagram that three rank temperature-compensated currents of the present invention produce circuit.
Embodiment
Refer to Fig. 1, as shown in the figure, traditional second-order temperature compensating current generating circuit includes and is connected constant current source I by five triodes Q10, Q11, Q12, Q13, Q14 of electric connection and the collector of resistance R10, triode Q10 with base stage
pTAT; The collector of triode Q11 and the emitter of base stage connecting triode Q10, the grounded emitter of triode Q11; The base stage of triode Q12 is connected constant current source I after being connected with the base stage of triode Q10
pTAT, the collector of triode Q12 connects power vd D; The emitter of connecting triode Q10 after the base stage of triode Q13 is connected with the base stage of triode Q11, the grounded emitter of triode Q13; As the collector linking object module 1 of the triode Q14 of output terminal, carry out temperature compensation, the grounded emitter of triode Q14, the emitter of connecting triode Q12 after the base stage of triode Q14 is connected with the collector of triode Q13, ground connection after the base stage contact resistance R10 of triode Q14.
The principle that traditional second-order temperature compensating current generating circuit carries out second-order temperature compensation is as follows: from Fig. 1, and the voltage from the collector of triode Q10 to ground connection GND is equation 1:
V
be(Q10)+V
be(Q11)＝V
be(Q12)+V
be(Q14)
Because V
be=(k*T/q) * ln (Ic/Is), wherein: k is Boltzmann constant, T is temperature, and q is electron charge, and Ic is transistor collector current, and Is is transistor saturation current.
Therefore equation 2 is obtained:
(k*T/q)*ln(Ic
(Q10)/Is
(Q10))+(k*T/q)*ln(Ic
(Q11)/Is
(Q1))＝(k*T/q)*ln(Ic
(Q12)/Is
(Q12))+(k*T/q)*ln(Ic
(Q14)/Is
(Q14))
And then obtain equation 3:
(Ic
(Q10)*Ic
(Q11))/(Is
(Q10)*Is
(Q11))＝(Ic
(Q12)*Ic
(Q14))/(Is
(Q12)*Is
(Q14))
In circuit theory, Ic
(Q10)=Ic
(Q11)=I
pTAT, the area ratio of setting triode Q10, Q11, Q12, Q13, Q14 is A
q10: A
q11: A
q12: A
q13: A
q14=M
0: M
1: M
2: M
3: M
4, therefore Is
(Q10): Is
(Q11): Is
(Q12: Is
(Q14)=M
0: M
1: M
2: M
4, we can obtain equation 4 like this:
I
PTAT 2＝[(M
0*M
1)/(M
2*M
4)]*Ic
(Q12)*Ic
(Q14)
Due to M
0, M
1, M
2, M
4ratio be fixing, therefore (M
0* M
1)/(M
2* M
4) value be also fixing, suppose (M
0* M
1)/(M
2* M
4) value be M, we obtain equation 5:
I
PTAT 2＝M*Ic
(Q12)*Ic
(Q14)
As shown in Figure 1: Ic
(Q12)=Io11, Ic
(Q14)=Io10
Because Ic
(Q12)=Ic
(Q13)+ V
be (Q14)/ R10, the area ratio due to Q13 and Q11 is A
q13: A
q11=M
3: M
1, obtain Ic
(Q13)=(M
3/ M
1) * I
pTAT, due to I
pTAT∝ k*T/q, and M
3/ M
1value be fixing, suppose M
3/ M
1value be M ', so Ic
(Q13)=M ' * I
pTAT, Ic
(Q13)increase with temperature T is risen; V
be (Q14)the increase of the value temperature T of/R10 declines; Therefore we by adjusting the value of M ' value and resistance R10, can make Ic
(Q12)namely Io11 does not vary with temperature.
Equation 6 is obtained like this by equation 5:
I
PTAT 2＝M*Io11*Io10
Because M value is constant, and Io11 does not vary with temperature, so Io10 and I
pTAT 2be directly proportional, i.e. Io10 ∝ T
2.
In traditional second-order temperature compensating current generating circuit, although obtain Io10 and temperature T
2the relation be directly proportional, can obtain second-order temperature compensate, but due to R10 and M value be matching relationship, namely along with the change of M value, R10 also will along with change, and this change is the change of jumping characteristic, therefore the value of Io10 is also change in jumping characteristic, causes the size of Io10 value arbitrarily not regulate.
Embodiment one:
Refer to Fig. 2, as shown in the figure, a kind of high order temperature compensation current produces circuit, include at least one second-order temperature compensating current generating circuit, second-order temperature compensating current generating circuit includes further and is connected constant current source I by five triodes Q20, Q21, Q22, Q23, Q24 of electric connection and the collector of resistance R20 and regulating resistance R21, triode Q20 with base stage
pTATthe collector of triode Q21 and the emitter of base stage connecting triode Q20, the grounded emitter of triode Q21; The base stage of triode Q22 is connected constant current source I after being connected with the base stage of triode Q20
pTAT, the collector of triode Q22 connects power vd D; The emitter of connecting triode Q20 after the base stage of triode Q23 is connected with the base stage of triode Q21, the grounded emitter of triode Q23; As the collector linking object module 1 of the triode Q24 of output terminal, carry out temperature compensation, ground connection after the emitter connection regulating resistance R21 of triode Q24, the emitter of connecting triode Q22 after the base stage of triode Q24 is connected with the collector of triode Q23, ground connection after the base stage contact resistance R20 of triode Q24.The area ratio of triode Q20, Q21, Q22, Q23, Q24 is: A
q20: A
q21: A
q22: A
q23: A
q24=N
0: N
1: N
2: N
3: N
4, wherein scale-up factor N
ibe the natural number being more than or equal to 1, i ∈ [0,4], and i is integer.At constant current source I
pTATwhen constant, output current Io20 can according to scale-up factor N
ivalue and regulating resistance R21 adjust.
What example one of the present invention carried out is that second-order temperature compensates, and its principle is as follows: from Fig. 1, and the voltage from the collector of triode Q20 to ground connection GND is equation 1:
V
be(Q20)+V
be(Q21)＝V
be(Q22)+V
be(Q24)+Ic
(Q24)*R21
Because V
be=(k*T/q) * ln (Ic/Is), wherein: k is Boltzmann constant, T is temperature, and q is electron charge, and Ic is transistor collector current, and Is is transistor saturation current.
Therefore equation 2 is obtained:
(k*T/q)*ln(Ic
(Q20)/Is
(Q20))+(k*T/q)*ln(Ic
(Q21)/Is
(Q21))＝(k*T/q)*ln(Ic
(Q22)/Is
(Q22))+(k*T/q)*ln(Ic
(Q24)/Is
(Q24))+Ic
(Q24)*R21
And then obtain equation 3:
ln[(Ic
(Q20)*Ic
(Q21)*Is
(Q22)*Is
(Q24))/(Ic
(Q22)*Ic
(Q24)*Is
(Q20)*Is
(Q21))]＝(q/kT)*Ic
(Q24)*R21
In circuit theory, Ic
(Q20)=Ic
(Q21)=I
pTAT, the area ratio of triode Q20, Q21, Q22, Q23, Q24 is A
q20: A
q21: A
q22: A
q23: A
q24=N
0: N
1: N
2: N
3: N
4, therefore Is
(Q20): Is
(Q21): Is
(Q22): Is
(Q24)=N
0: N
1: N
2: N
4, we can obtain equation 4 like this:
ln{[(N
2*N
4)/(N
0*N
1)]*[I
PTAT 2/(Ic
(Q22)*Ic
(Q24))]}＝(q/kT)*Ic
(Q24)*R21
Due to N
0, N
1, N
2, N
4ratio be fixing, therefore (N
2* N
4)/(N
0* N
1) value be also fixing, suppose (N
2* N
4)/(N
0* N
1) value be P, we obtain equation 5:
ln[P*I
PTAT 2/(Ic
(Q22)*Ic
(Q24))]＝(q/kT)*Ic
(Q24)*R21
Thus obtain equation 6:
ln{1+[(P*I
PTAT 2-Ic
(Q22)*Ic
(Q24))/(Ic
(Q22)*Ic
(Q24))]}＝(q/kT)*Ic
(Q24)*R21
Due to (P*I
pTAT 2-Ic
(Q22)* Ic
(Q24))/(Ic
(Q22)* Ic
(Q24)) trend towards zero, obtain equation 7 by Taylor expansion:
(P*I
PTAT 2-Ic
(Q22)*Ic
(Q24))/(Ic
(Q22)*Ic
(Q24))≈(q/kT)*Ic
(Q24)*R21
And then obtain equation 8:
P*I
PTAT 2-Ic
(Q22)*Ic
(Q24)≈(q/kT)*R21*Ic
(Q22)*Ic
(Q24) 2
Due to Ic
(Q22)with Ic
(Q24)value very little, therefore (q/kT) * R21*Ic
(Q22)* Ic
(Q24) 2value be high-order in a small amount, can ignore, so obtain equation 9:
P*I
PTAT 2≈Ic
(Q22)*Ic
(Q24)
As shown in Figure 2: Ic
(Q22)=Io21, Ic
(Q24)=Io20
Because Ic
(Q22)=Ic
(Q23)+ V
be (Q24)/ R20, the area ratio due to Q23 and Q21 is A
q23: A
q11=N
3: N
1, obtain Ic
(Q23)=(N
3/ N
1) * I
pTAT, due to I
pTAT∝ k*T/q, and N
3/ N
1value be fixing, suppose N
3/ N
1value be P ', so Ic
(Q23)=P ' * I
pTAT, Ic
(Q23)increase with temperature T is risen; V
be (Q24)the value of/R20 declines with the increase of temperature T; Therefore we by adjusting the value of P ' value and resistance R20, can make Ic
(Q22)namely Io21 does not vary with temperature.
Equation 10 can be obtained like this:
P*I
PTAT 2≈Io21*Io20
Because P value is constant, and Io21 does not vary with temperature, so Io20 and I
pTAT 2be directly proportional, i.e. Io20 ∝ T
2.
Now, owing to adding regulating resistance R21, the value of Io20 can be reduced along with the increase of regulating resistance R21, but do not affect Io20 and temperature T
2the relation be directly proportional.So just can pass through regulating resistance R21, the size of continuous setup output current Io20.
Embodiment two:
Refer to Fig. 3, as shown in the figure, a kind of high order temperature compensation current produces circuit, include the three rank temperature-compensated currents formed on the basis of second-order temperature compensating current generating circuit and produce circuit, the collector that three rank temperature-compensated currents generation circuit also include five triodes Q30, Q31, Q32, Q33, Q34 and resistance R30 and regulating resistance R31, triode Q30 is connected constant current source I with base stage
pTAT, the collector of the emitter connecting triode Q20 of triode Q30; The emitter of connecting triode Q30 after the base stage of triode Q22 is connected with the base stage of triode Q20; The base stage of triode Q31 is connected constant current source I after being connected with the base stage of triode Q30
pTAT, the collector of triode Q31 connects power vd D, the emitter base stage of connecting triode Q32 and the collector of triode Q22 simultaneously of triode Q31; The collector of triode Q32 connects power vd D, and triode Q32 emitter is the base stage of connecting triode Q34 and the collector of triode Q33 simultaneously; The emitter of connecting triode Q20 after the base stage of triode Q33 is connected with the base stage of triode Q21, the grounded emitter of triode Q33; As the collector linking object module of the triode Q34 of output terminal, carry out temperature compensation, ground connection after the base stage contact resistance R30 of triode Q34, ground connection after the emitter connection regulating resistance R31 of triode Q34.The area ratio of triode Q20, Q21, Q22, Q23, Q24, Q30, Q31, Q32, Q33, Q34 is: A
q20: A
q21: A
q22: A
q23: A
q24: A
q30: A
q31: A
q32: A
q33: A
q34=N
0: N
1: N
2: N
3: N
4: N
5: N
6: N
7: N
8: N
9, wherein scale-up factor N
ibe the natural number being more than or equal to 1, i ∈ [0,9], and i is integer, at constant current source I
pTATwhen constant, output current Io30 can according to scale-up factor N
iand the value of regulating resistance R31 adjusts.
The principle of three rank temperature compensations of the embodiment of the present invention two can be derived with reference to the principle of embodiment one, thus obtains three rank temperature-compensated current Io30 ∝ T
3.
By that analogy, can obtain quadravalence even more high-order temperature-compensated current produce circuit, the principle of its temperature compensation also can be derived with reference to the principle of embodiment one, thus obtains high order temperature compensation current Io ∝ T
n, wherein n>=4 and n is natural number.
High order temperature compensation current produces a current continuity control method for circuit, when carrying out the adjustment of second-order temperature offset current, first by resize ratio coefficient N
imake the electric current I o21 of the collector of triode Q22 for not temperature variant constant current with the value of resistance R20; And then by resize ratio coefficient N
iwith regulating resistance R21, thus regulate the size of the collector current Io20 of triode Q24 continuously, the size of collector current Io20 and temperature characterisitic can be matched with the requirement of object module, wherein i ∈ [0,4], and i is integer.
High order temperature compensation current produces a current continuity control method for circuit, on the basis of carrying out the adjustment of second-order temperature offset current, carries out three rank temperature-compensated currents and regulates, when carrying out three rank temperature-compensated currents and regulating, first by resize ratio coefficient N
ithe electric current I o32 of the collector of the electric current I o31 of the collector of triode Q32 and triode Q31 is made to be not temperature variant constant current with the value of resistance R30, R20; And then by resize ratio coefficient N
iwith regulating resistance R31, thus regulate the size of the collector current Io30 of triode Q34 continuously, the size of collector current Io30 and temperature characterisitic can be matched with the requirement of object module, wherein i ∈ [0,9], and i is integer.
High order temperature compensation current produces a current continuity control method for circuit, on the basis of carrying out the temperature-compensated current adjustment of n rank, carry out n+1 rank temperature-compensated current and regulate, n >=3, and n is integer.
Claims (9)
1. a high order temperature compensation current produces circuit, include at least one second-order temperature compensating current generating circuit, described second-order temperature compensating current generating circuit include further by be electrically connected five triodes Q20, Q21, Q22, Q23, Q24 and resistance R20 and regulating resistance R21, it is characterized in that: the collector of triode Q20 is connected constant current source I with base stage
pTAT; The collector of triode Q21 and the emitter of base stage connecting triode Q20, the grounded emitter of triode Q21; The base stage of triode Q22 is connected constant current source I after being connected with the base stage of triode Q20
pTAT, the collector of triode Q22 connects power vd D; The emitter of connecting triode Q20 after the base stage of triode Q23 is connected with the base stage of triode Q21, the grounded emitter of triode Q23; As the collector linking object module of the triode Q24 of output terminal, ground connection after the emitter connection regulating resistance R21 of triode Q24, the emitter of connecting triode Q22 after the base stage of triode Q24 is connected with the collector of triode Q23, ground connection after the base stage contact resistance R20 of triode Q24.
2. high order temperature compensation current as claimed in claim 1 produces circuit, it is characterized in that: the area ratio of described triode Q20, Q21, Q22, Q23, Q24 is: A
q20: A
q21: A
q22: A
q23: A
q24=N
0: N
1: N
2: N
3: N
4, wherein scale-up factor N
ibe the natural number being more than or equal to 1, i ∈ [0,4], and i is integer.
3. high order temperature compensation current as claimed in claim 1 produces circuit, it is characterized in that: described constant current source I
pTATbe one with the current source of PTAT.
4. the high order temperature compensation current as described in as arbitrary in claims 1 to 3 produces circuit, it is characterized in that: also include the three rank temperature-compensated currents formed on the basis of second-order temperature compensating current generating circuit and produce circuit, the collector that three described rank temperature-compensated currents generation circuit also include five triodes Q30, Q31, Q32, Q33, Q34 and resistance R30 and regulating resistance R31, triode Q30 is connected constant current source I with base stage
pTAT, the collector of the emitter connecting triode Q20 of triode Q30; The emitter of connecting triode Q30 after the base stage of triode Q22 is connected with the base stage of triode Q20; The base stage of triode Q31 is connected constant current source I after being connected with the base stage of triode Q30
pTAT, the collector of triode Q31 connects power vd D, the emitter base stage of connecting triode Q32 and the collector of triode Q22 simultaneously of triode Q31; The collector of triode Q32 connects power vd D, and triode Q32 emitter is the base stage of connecting triode Q34 and the collector of triode Q33 simultaneously; The emitter of connecting triode Q20 after the base stage of triode Q33 is connected with the base stage of triode Q21, the grounded emitter of triode Q33; As the collector linking object module of the triode Q34 of output terminal, ground connection after the base stage contact resistance R30 of triode Q34, ground connection after the emitter connection regulating resistance R31 of triode Q34.
5. high order temperature compensation current as claimed in claim 4 produces circuit, it is characterized in that: the area ratio of described triode Q20, Q21, Q22, Q23, Q24, Q30, Q31, Q32, Q33, Q34 is: A
q20: A
q21: A
q22: A
q23: A
q24: A
q30: A
q31: A
q32: A
q33: A
q34=N
0: N
1: N
2: N
3: N
4: N
5: N
6: N
7: N
8: N
9, wherein scale-up factor N
ibe the natural number being more than or equal to 1, i ∈ [0,9], and i is integer.
6. high order temperature compensation current as claimed in claim 4 produces circuit, it is characterized in that: also include and produce at n rank temperature-compensated current the n+1 rank temperature-compensated current generation circuit that the basis of circuit is formed, n >=3, and n is integer.
7. the high order temperature compensation current as described in as arbitrary in claim 1 to 6 produces a current continuity control method for circuit, it is characterized in that: carry out second-order temperature offset current when regulating, first by resize ratio coefficient N
imake the electric current I o21 of the collector of triode Q22 for not temperature variant constant current with the value of resistance R20; And then by resize ratio coefficient N
iwith regulating resistance R21, thus regulate the size of the collector current Io20 of triode Q24 continuously, the size of collector current Io20 and temperature characterisitic can be matched with the requirement of object module, wherein i ∈ [0,4], and i is integer.
8. high order temperature compensation current as claimed in claim 7 produces the current continuity control method of circuit, it is characterized in that: on the basis of carrying out the adjustment of second-order temperature offset current, carry out three rank temperature-compensated currents to regulate, when carrying out three rank temperature-compensated currents and regulating, first by resize ratio coefficient N
ithe electric current I o32 of the collector of the electric current I o31 of the collector of triode Q32 and triode Q31 is made to be not temperature variant constant current with the value of resistance R30, R20; And then by resize ratio coefficient N
iwith regulating resistance R31, thus regulate the size of the collector current Io30 of triode Q34 continuously, the size of collector current Io30 and temperature characterisitic can be matched with the requirement of object module, wherein i ∈ [0,9], and i is integer.
9. high order temperature compensation current as claimed in claim 8 produces the current continuity control method of circuit, it is characterized in that: on the basis of carrying out the temperature-compensated current adjustment of n rank, carry out n+1 rank temperature-compensated current and regulate, n >=3, and n is integer.
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| TWI502304B (en) | 2013-06-03 | 2015-10-01 | Advanced Semiconductor Eng | Bandgap reference voltage generating circuit and electronic system using the same |
| CN104216459B (en) * | 2013-06-03 | 2016-03-02 | 日月光半导体制造股份有限公司 | Band gap generating circuit from reference voltage and the electronic system using it |
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| CN101995898A (en) * | 2009-08-21 | 2011-03-30 | 深圳艾科创新微电子有限公司 | High-order temperature compensating current reference source |
| CN102385411A (en) * | 2011-09-22 | 2012-03-21 | 钜泉光电科技(上海)股份有限公司 | Reference current generating circuit |
| KR20120097830A (en) * | 2011-02-25 | 2012-09-05 | 삼성테크윈 주식회사 | Temperature compensation circuit and device for comprising the same |
| CN202433799U (en) * | 2012-02-24 | 2012-09-12 | 电子科技大学 | Band-gap reference voltage source |
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| US8624661B2 (en) * | 2006-12-22 | 2014-01-07 | Texas Instruments Incorporated | Method and circuit for curvature correction in bandgap references with asymmetric curvature |
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