CN214480492U - Chip is put in control system fortune - Google Patents
Chip is put in control system fortune Download PDFInfo
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- CN214480492U CN214480492U CN202120230534.9U CN202120230534U CN214480492U CN 214480492 U CN214480492 U CN 214480492U CN 202120230534 U CN202120230534 U CN 202120230534U CN 214480492 U CN214480492 U CN 214480492U
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Abstract
A control system operational amplifier chip relates to the microelectronic technical field of control system operational amplifier chips, a sensor comprises a sensitive element and a conversion element, the sensitive element is provided with a sensing detection probe circuit, the operational amplifier chip is arranged into an operational amplifier thick film circuit, the operational amplifier thick film circuit is connected with a control system and an operational amplifier, eight pins are arranged outside the operational amplifier chip, seven pins are OUT, IN-, IN +, VCC-, VCC +, HV + and GND, the control system is provided with a first access end, a second access end, a third access end, a fourth access end, a fifth access end, a sixth access end and a seventh access end, IN + and IN-are used as input interfaces of the sensing detection probe circuit, OUT and GND are used as output interfaces of the operational amplifier, VCC +, VCC-and GND are used as input interfaces of a double power supply, HV + is used as an input interface of a control power supply, the utility model discloses in, thick film circuit entire system is put to leading fortune reaches miniaturation and platyzization, extends the application scope and the field of weak sensing element in the sensing probe circuit.
Description
Technical Field
The utility model relates to a chip microelectronics technical field is put in control system fortune, concretely relates to chip is put in control system fortune.
Background
A sensor is a detection device, usually composed of a sensing element and a conversion element, which can sense a specified measured quantity and convert it into a usable signal according to a certain rule (mathematical function rule). Different kinds of sensors have different functions, wherein various kinds of sensitive elements, conversion elements and the like are adopted. The optical sensitive element can not convert tiny physical or biological information into corresponding sensing signals, and the tiny characteristic information of the sensitive element can output effective sensing voltage or current signals after being amplified and transmitted by the preposed operational amplifier to form complete micro-potential signals with the physical or biological information.
Many electronic control systems require amplification to detect weak micro-potentials, such as: tiny information of sensing various physical quantity, biomass, chemical quantity characteristics and characteristics can be detected in the world. For example, each type of sensor controller needs to use a miniaturized sensor with high cost performance, high linear precision, high sensitivity and robustness. The most important is to research and develop a control system operational amplifier chip, and a high-sensitivity, high-precision, flat and miniaturized systematic chip is realized from the source. With the detection requirements of newly developed sensing elements and various weak sensitive elements, besides the technical performance and functions of the front-mounted operational amplifier thick film circuit, the size of the front-mounted operational amplifier thick film circuit is required to be smaller and flatter.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a chip is put to control system fortune for leading fortune is put thick film circuit entire system and is reached miniaturation and platyzization, extends the application scope and the field of weak sensing element in the sensing probe circuit, and concrete scheme is as follows:
a control system operational amplifier chip is used for amplifying an electric signal of a sensor, the sensor comprises a sensitive element and a conversion element, the sensitive element is provided with a sensing detection probe circuit, the operational amplifier chip is arranged as an operational amplifier thick film circuit, the operational amplifier thick film circuit is connected with a control system and an operational amplifier, eight pins are arranged outside the operational amplifier chip, seven of the eight pins are OUT, IN-, IN +, VCC-, VCC +, HV +, and GND, and the control system is provided with a first access end, a second access end, a third access end, a fourth access end, a fifth access end, a sixth access end and a seventh access end;
the IN + and the IN-are used as input interfaces of the sensing detection probe circuit, the IN + and the IN-are respectively connected with the positive electrode and the negative electrode of the operational amplifier, the positive electrode and the negative electrode of the operational amplifier are respectively connected with the sixth access end and the fifth access end, the sensing detection probe circuit is connected with the operational amplifier by accessing the IN + and the IN-, the OUT and the GND are used as output interfaces of the operational amplifier, and the OUT and the GND are respectively connected with the third access end and the fourth access end;
the VCC +, VCC-and GND are used as input interfaces of a dual power supply, and the first access end, the second access end and the fourth access end are respectively connected with the VCC +, VCC-and GND;
the HV + is used as an input interface of a control power supply, and the seventh access end is connected with the HV +.
Further, the HV + is connected with the control power supply through a resistor R1, a capacitor C0, a voltage regulator tube Y1 and a diode D1, the HV + is connected with the diode D1, the diode D1 is connected with the resistor R1, the resistor R1 is connected with the capacitor C0, the capacitor C0 is connected with the VCC +, and the voltage regulator tube Y1 is short-circuited at two ends of the capacitor C0 and the capacitor R1.
Further, a resistor R5, a capacitor C2, a resistor R4, a resistor R3, and a capacitor C4 are sequentially connected between the OUT and the third access end, and the resistor R3 and the capacitor C4 are further connected to the fifth access end.
Further, a capacitor C1 is connected between VCC-and GND.
Further, a resistor R2 is connected between the IN + and the GND, and a capacitor C3 is short-circuited at two ends of the resistor R2.
Further, the voltage value of the double power sources is +/-9V to +/-15V.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the weak potential output by the sensing detection probe circuit of the sensitive element through the detection bridge circuit is connected to the sixth access end and the fifth access end IN the sensor control system through IN + and IN-, so that the weak potential is connected with the operational amplifier and is amplified and output to OUT through the low-noise high-precision operational amplifier. Double power supply (+ V-0-V-) passes through VCC +, VCC-, GND input to between first incoming end, second incoming end and the fourth incoming end, and the two power supply values of symmetry are high or low decision system sensitivity needs, and the high output sensitivity of general two power supply values is just high, the utility model provides a two power supply values are 9V- +/-15V, specifically adopt according to actual need to realize high sensitivity and high accuracy. And the resistor R1, the voltage regulator tube Y1 and the capacitor D1 are matched with the control power supply HV +, are used as a constant current power supply in a peripheral circuit, and are connected to the seventh access end for output. To sum up, in the utility model discloses in, select the low noise for use in the chip is put to fortune, outside high-accuracy operational amplifier, passive components and parts in control system set up to fortune and put the chip, make fortune put outside the main function and the performance of chip reach control system's requirement, small flattening is realized to the volume appearance to make leading fortune put whole control system of thick film circuit and reach little miniaturation and flattening, expanded weak sensitive element's in the sensing probe circuit range of application and field.
Drawings
Fig. 1 is an overall schematic view of an embodiment of the present invention;
FIG. 2 is a simplified diagram of the present invention showing the connection relationship;
fig. 3 is a schematic structural diagram of the operational amplifier chip of the present invention.
Reference numerals: 100. a control system; 200. an operational amplifier; 300. and (4) carrying out operational amplification on the chip.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.
The utility model provides a chip is put in control system fortune for amplify the signal of telecommunication of sensor, the sensor includes sensing element and converting element, and the sensing element is equipped with sensing detection probe circuit, and chip 300 is put to fortune sets up to fortune and puts thick film circuit, and in this embodiment, chip 300 is put to fortune also is called CG2 control system fortune and puts the chip, applies to in the sensor for the sensor reaches the requirement of miniaturation and platyzing when realizing detecting the needs, improves the suitability.
With reference to fig. 2 and fig. 3, specifically, the operational amplifier thick film circuit is connected to a control system 100 and an operational amplifier 200, the control system 100 and the operational amplifier 200 convert weak characteristic information into signals, eight pins are arranged outside the operational amplifier chip 300, and the functions of power supply, signal input, signal output and the like of the whole operational amplifier thick film circuit are realized through the pins. Seven of the pins are OUT, IN-, IN +, VCC-, VCC +, HV +, and GND, corresponding to arabic numbers 1, 2, 3, 4, 8, 6, and 5 IN the drawing, and the control system 100 is formed with a first access terminal, a second access terminal, a third access terminal, a fourth access terminal, a fifth access terminal, a sixth access terminal, and a seventh access terminal, corresponding to letters a-g.
IN detail, IN + and IN-are used as input interfaces of the sensing probe circuit, IN + and IN-are respectively connected to positive and negative electrodes of the operational amplifier 200, the positive and negative electrodes of the operational amplifier 200 are respectively connected to the sixth access terminal and the fifth access terminal, the sensing probe circuit is connected to the operational amplifier 200 by connecting IN + and IN-, OUT and GND are used as output interfaces of the operational amplifier 200, and OUT and GND are respectively connected to the third access terminal and the fourth access terminal.
VCC +, VCC-and GND are used as input interfaces of the dual power supplies, and the first access end, the second access end and the fourth access end are respectively connected with VCC +, VCC-and GND. In this embodiment, the voltage value of the dual power supply is ± 9V to ± 15V. Double power supply (+ V-0-V-) passes through VCC +, VCC-, GND input to between first incoming end, second incoming end and the fourth incoming end, and the two power supply values of symmetry are high or low decision system sensitivity needs, and the high output sensitivity of two power supply values is just high generally, the utility model provides a two power supply value specificities adopt according to actual need to realize high sensitivity and high accuracy.
As shown in fig. 1, HV + is an input interface of the control power supply, and the seventh input terminal is connected to HV +. HV + is connected with a control power supply through a resistor R1, a capacitor C0, a voltage regulator tube Y1 and a diode D1, HV + is connected with a diode D1, a diode D1 is connected with a resistor R1, a resistor R1 is connected with a capacitor C0, a capacitor C0 is connected with VCC +, and two ends of the capacitor C0 and the capacitor R1 are short-circuited with the voltage regulator tube Y1. The resistor R1, the voltage regulator tube Y1 and the capacitor D1 are matched with the control power supply HV +, and are used as a constant current power supply in the peripheral circuit and connected to the first access end for output, so that the sensitivity and the precision are improved.
When the sensor works normally, a weak potential output by a sensing detection probe circuit of the sensing element through the detection bridge circuit is connected to a sixth access end and a fifth access end IN the sensor control system 100 through IN + and IN-, so that the weak potential is connected to the operational amplifier 200 and is amplified and output to OUT through the low-noise high-precision operational amplifier 200.
In this embodiment, as shown in the figure, in order to implement circuit protection, a resistor R5, a capacitor C2, a resistor R4, a resistor R3, and a capacitor C4 are further sequentially connected between the OUT and the third access terminal, and the resistor R3 and the capacitor C4 are further connected to the fifth access terminal. A capacitor C1 is connected between VCC-and GND. A resistor R2 is connected between IN + and GND, and a capacitor C3 is shorted at both ends of the resistor R2.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A control system operational amplifier chip is used for amplifying an electric signal of a sensor, the sensor comprises a sensitive element and a conversion element, the sensitive element is provided with a sensing detection probe circuit, and the control system operational amplifier chip is characterized IN that the operational amplifier chip is arranged as an operational amplifier thick film circuit, the operational amplifier thick film circuit is connected with a control system and an operational amplifier, eight pins are arranged outside the operational amplifier chip, seven of the eight pins are OUT, IN-, IN +, VCC-, VCC +, HV +, and GND, and the control system is provided with a first access end, a second access end, a third access end, a fourth access end, a fifth access end, a sixth access end and a seventh access end;
the IN + and the IN-are used as input interfaces of the sensing detection probe circuit, the IN + and the IN-are respectively connected with the positive electrode and the negative electrode of the operational amplifier, the positive electrode and the negative electrode of the operational amplifier are respectively connected with the sixth access end and the fifth access end, the sensing detection probe circuit is connected with the operational amplifier by accessing the IN + and the IN-, the OUT and the GND are used as output interfaces of the operational amplifier, and the OUT and the GND are respectively connected with the third access end and the fourth access end;
the VCC +, VCC-and GND are used as input interfaces of a dual power supply, and the first access end, the second access end and the fourth access end are respectively connected with the VCC +, VCC-and GND;
the HV + is used as an input interface of a control power supply, and the seventh access end is connected with the HV +.
2. The operational amplifier chip of claim 1, wherein the HV + is connected to the control power supply through a resistor R1, a capacitor C0, a voltage regulator tube Y1 and a diode D1, the HV + is connected to the diode D1, the diode D1 is connected to the resistor R1, the resistor R1 is connected to the capacitor C0, the capacitor C0 is connected to the VCC +, and the voltage regulator tube Y1 is short-circuited at two ends of the capacitor C0 and the capacitor R1.
3. The control system operational amplifier chip of claim 1, wherein a resistor R5, a capacitor C2, a resistor R4, a resistor R3, and a capacitor C4 are further connected between the OUT and the third access terminal in sequence, and the resistor R3 and the capacitor C4 are further connected to the fifth access terminal.
4. The control system operational amplifier chip of claim 2, wherein a capacitor C1 is connected between VCC and GND.
5. The operational amplifier chip of claim 4, wherein a resistor R2 is connected between IN + and GND, and a capacitor C3 is shorted to both ends of the resistor R2.
6. The operational amplifier chip of claim 5, wherein the voltage of the dual power supply is ± 9V to ± 15V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120230534.9U CN214480492U (en) | 2021-01-27 | 2021-01-27 | Chip is put in control system fortune |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120230534.9U CN214480492U (en) | 2021-01-27 | 2021-01-27 | Chip is put in control system fortune |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214480492U true CN214480492U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120230534.9U Active CN214480492U (en) | 2021-01-27 | 2021-01-27 | Chip is put in control system fortune |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214480492U (en) |
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2021
- 2021-01-27 CN CN202120230534.9U patent/CN214480492U/en active Active
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