CN106941358A - A kind of infrared radiation receiving circuit with fast charge mode - Google Patents
A kind of infrared radiation receiving circuit with fast charge mode Download PDFInfo
- Publication number
- CN106941358A CN106941358A CN201710049115.3A CN201710049115A CN106941358A CN 106941358 A CN106941358 A CN 106941358A CN 201710049115 A CN201710049115 A CN 201710049115A CN 106941358 A CN106941358 A CN 106941358A
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- 230000005855 radiation Effects 0.000 title claims abstract description 15
- 238000007600 charging Methods 0.000 claims abstract description 53
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 9
- 230000003321 amplification Effects 0.000 claims abstract description 8
- 239000004065 semiconductor Substances 0.000 claims description 56
- 230000005611 electricity Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010291 electrical method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1018—Means associated with receiver for limiting or suppressing noise or interference noise filters connected between the power supply and the receiver
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
- H04B1/1615—Switching on; Switching off, e.g. remotely
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
- H04B1/1623—Supply circuits using tubes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of infrared radiation receiving circuit with fast charge mode, including pre-amplification circuit, gain adjustable amplifier, limiting amplifier, bandpass filter, comparator circuit, demodulation output circuit, automatic gain control circuit, charge pump circuit, envelope extraction circuit, quick-charging circuit, reference source circuit；Pre-amplification circuit is sequentially connected gain adjustable amplifier, limiting amplifier, bandpass filter；Bandpass filter output point two-way, connects comparator circuit, another road is sequentially connected envelope extraction circuit, quick-charging circuit and charge pump circuit all the way；Comparator circuit output point two-way, is exported, another road connects gain adjustable amplifier after being sequentially connected automatic gain control circuit, charge pump circuit after connection demodulation output circuit all the way；Wave filter output center frequency connects bandpass filter and envelope extraction circuit, reference signal connection quick-charging circuit.Solve different degrees of noise to come in, the problem of noise is misunderstood reading.
Description
Technical field
The present invention relates to infrared radiation receiving circuit technical field, more particularly to a kind of infrared ray with fast charge mode
Receiving circuit.
Background technology
Although existing infrared receiving circuit can be amplified to normal signal to a certain extent, noise signal is carried out
Suppress.But the charging current of circuit is fixed, that is to say, that different degrees of noise is come in, the speed that gain declines is solid
Fixed.If very strong noise is come in, if the speed that gain declines is constant, noise still can be output to electricity below
Road is exported, and causes noise to be misunderstood reading.
The content of the invention
In order to solve problem above, the present invention provides a kind of infrared radiation receiving circuit with fast charge mode, can be with
Effectively solve the above problems.
The technical scheme is that：
A kind of infrared radiation receiving circuit with fast charge mode, including pre-amplification circuit, gain adjustable amplifier, limit
Width amplifier, bandpass filter, comparator circuit, demodulation output circuit, automatic gain control circuit, charge pump circuit, envelope
Extract circuit, quick-charging circuit, reference source circuit；The pre-amplification circuit is sequentially connected the gain adjustable amplifier, limit
Width amplifier, bandpass filter；The bandpass filter output point two-way, connects the comparator circuit all the way；Another road according to
The secondary connection envelope extraction circuit, quick-charging circuit and charge pump circuit, for when input noise amplitude is excessive, introducing
Extra electric current accelerates the charging process of the charge pump circuit；The comparator circuit output point two-way, connects institute all the way
Exported after stating demodulation output circuit；Another road, which is sequentially connected after the automatic gain control circuit, charge pump circuit, connects described
Gain adjustable amplifier, the gain for controlling the gain adjustable amplifier；The reference source circuit exports two paths of signals, point
It is not wave filter output center frequency, reference signal；The wave filter output center frequency connects the bandpass filter and institute
Envelope extraction circuit is stated, the reference signal connects the quick-charging circuit.
Further, the charge pump circuit includes the first charging current source, first switch, the first discharge current source, the
Two switches, electric capacity；Described first fills current source first end connection power supply, and the second end is sequentially connected in series the first switch and the electricity
Hold first end；The end of electric capacity second ground connection；The first discharge current source connected with the second switch after with the electric capacity
It is connected into a loop.
Further, the folding of the first switch is exported by the automatic gain control circuit charging signals are controlled
System；Discharge signal that the folding of the second switch is exported by the automatic gain control circuit is controlled.
Further, the control model of the automatic gain control circuit uses simple charge and discharge electrical method, the simple charge and discharge
Electrical method is that electric capacity is charged in the charging signals high level, and electric capacity discharges during the charging signals low level.
Further, the control model of the automatic gain control circuit uses free time detection method, when described idle
Between detection method be that electric capacity is charged in the charging signals high level, electric charge on electric capacity is protected during the charging signals low level
Hold constant.
Further, the quick-charging circuit includes comparator, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the
Two charging current sources；The comparator electrode input end connects the envelope extraction circuit, and negative input connects the reference
Signal, output end connects the grid of first metal-oxide-semiconductor；The source electrode of first metal-oxide-semiconductor, the source electrode of the second metal-oxide-semiconductor and the 3rd
The source electrode of metal-oxide-semiconductor is connected with power supply；The drain electrode of first metal-oxide-semiconductor and the drain electrode connection described second of second metal-oxide-semiconductor are filled
Electric current source first end, the end of the second charging current source second ground connection；The grid of second metal-oxide-semiconductor and drain electrode are connected；Institute
The grid for stating the 3rd metal-oxide-semiconductor connects the grid of second metal-oxide-semiconductor, and the drain electrode of the 3rd metal-oxide-semiconductor connects the electric capacity first
End.
Further, first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor use P-channel metal-oxide-semiconductor.
It is compared with the prior art, the present invention has advantages below：Volume is introduced to electric capacity when the noise amplitude of input is excessive
Outer electric current accelerates charging process, the gain of extra reduction circuit, accelerates the decline of gain, so as to drop avoids too strong make an uproar
Acoustical signal is misplaced to have a bowel movement and recalled, and influences the normal work of receiver.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, the reality with the present invention
Apply example to be used for explaining the present invention together, be not construed as limiting the invention.
Accompanying drawing 1 is the infrared radiation receiving circuit theory diagram with fast charge mode；
Accompanying drawing 2 is charge pump circuit principle；
Accompanying drawing 3 is quick-charging circuit schematic diagram；
Accompanying drawing 4 is two kinds of control models of automatic gain control circuit.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that preferential reality described herein
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Refer to accompanying drawing 1-4, a kind of infrared radiation receiving circuit with fast charge mode, including pre-amplification circuit 1, increasing
Beneficial adjustable amplifier 2, limiting amplifier 3, bandpass filter 4, comparator circuit 5, demodulation output circuit 6, automatic growth control
Circuit 7, charge pump circuit 8, envelope extraction circuit 10, quick-charging circuit 11, reference source circuit 9；The pre-amplification circuit 1 according to
The secondary connection gain adjustable amplifier 2, limiting amplifier 3, bandpass filter 4；The bandpass filter output point two-way, one
Road connects the comparator circuit 5；Another road is sequentially connected the envelope extraction circuit 10, quick-charging circuit 11 and charge pump
Circuit 8；The output point of comparator circuit 5 two-way, is exported after the demodulation output circuit 6 is connected all the way；Another road connects successively
The gain adjustable amplifier is connected after connecing the automatic gain control circuit 7, the charge pump circuit 8；The a reference source electricity
Road 9 exports two paths of signals, is wave filter output center frequency, reference signal Vref respectively；The wave filter output center frequency
Connect the bandpass filter 4 and the envelope extraction circuit 10, the reference signal Vref connections quick-charging circuit
11。
Such as Fig. 1, first, the infrared signal received is converted into current signal, current signal by outside photodiode
Voltage signal is converted into by the pre-amplification circuit 1, band is then entered by gain adjustable amplifier 2 and limiting amplifier 3
Bandpass filter 4, bandpass filter 4 is defeated by 2 roads after comparator circuit 5 after the noise signal outside carrier signal is filtered
Go out, be demodulation output circuit 6 all the way, another road be automatic gain control circuit 7 and charge pump circuit 8 feed back signal to gain can
Amplifier 2 is adjusted, for controlling its gain.
Meanwhile, the output signal of bandpass filter 4 leads up to the envelope extraction circuit 10, then extracts the envelope of signal
The quick-charging circuit 11 is output to, for when input noise amplitude is excessive, introducing extra electric current to accelerate the electricity
The charging process of lotus pump circuit 8, so as to further control the gain of the gain adjustable amplifier 2.
Such as Fig. 2, the charge pump circuit 8 includes the first charging current source, first switch SW1, the first discharge current source, the
Two switch SW2, electric capacity C；Described first fills current source first end connection power supply, and the second end is sequentially connected in series the first switch SW1
And the electric capacity C first ends；The ends of electric capacity C second ground connection；Connected with the second switch SW2 in the first discharge current source
Afterwards a loop is connected into the electric capacity C.
Charging signals Vch that the folding of the first switch SW1 is exported by the automatic gain control circuit 7 is controlled；
Discharge signal Vdis that the folding of the second switch SW2 is exported by the automatic gain control circuit 7 is controlled.
When the charging signals Vch is high level, first switch SW1 closure conductings, first charging current source is given
The electric capacity C chargings, when the discharge signal Vdis high level, second switch SW2 closure conductings, the electric capacity C electric discharges.When
When the charging signals Vch and discharge signal Vdis is low level, the first switch SW1 and described second switch
SW2 is to open not on-state.
The automatic gain control circuit 7 is all by 2 different signals, i.e. charging signals Vch and discharge signal
Vdis controls the charge pump circuit 8, so as to control the gain of gain adjustable amplifier 2.
Such as Fig. 4, when the control model of the automatic gain control circuit 7 uses simple charge and discharge electrical method, i.e. charging signals
I.e. Vch charges when having train of pulse input high level to electric capacity, i.e. electric capacity discharges during free time low level, because empty
It is longer than burst time between idle, so overall realize electric discharge, increase the gain of gain adjustable amplifier 2.
Such as Fig. 4, when the control model of the automatic gain control circuit 7 uses free time detection method, i.e. charging is believed
I.e. a number Vch charges when having train of pulse input high level to electric capacity, i.e. electric charge during free time low level on electric capacity
Keep constant, the overall noise to entrance suppresses.
The quick-charging circuit 11 includes comparator, the first metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2, the 3rd metal-oxide-semiconductor M3, second
Charging current source；The comparator electrode input end connects the envelope extraction circuit 10, and negative input connects the reference
Signal Vref, output end connects the grid of the first metal-oxide-semiconductor M1；The source electrode of the first metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2
Source electrode and the 3rd metal-oxide-semiconductor M3 source electrode are connected with power supply；The drain electrode and the leakage of the second metal-oxide-semiconductor M2 of the first metal-oxide-semiconductor M1
Pole connects the second charging current source first end, the end of the second charging current source second ground connection；The second metal-oxide-semiconductor M2's
Grid and drain electrode are connected；The grid of the 3rd metal-oxide-semiconductor M3 connects the grid of the second metal-oxide-semiconductor M2, the 3rd metal-oxide-semiconductor M3
Drain electrode connect the electric capacity C first ends.
The envelope that the envelope extraction circuit 10 is extracted is used as the positive pole input signal of the comparator, negative pole input ginseng
Signal Vref is examined, if input envelope signal is excessive, by exporting a high level after comparator, the first metal-oxide-semiconductor M1's
Gate source voltage is compressed so that the first metal-oxide-semiconductor M1 is closed and is not turned on, described in the current direction of second charging current source
Second metal-oxide-semiconductor M2, then obtains same electric current by the 3rd metal-oxide-semiconductor M3 described in mirror, so as to be filled to the electric capacity C
Electricity.Charge volume in the extra increase electric capacity C unit interval, so that the extra reduction gain adjustable amplifier 2
Gain；If input envelope signal is not above reference signal Vref, by exporting a low level after comparator so that described
First metal-oxide-semiconductor M1 is turned on, and the electric current of second charging current source would not flow to the electric capacity C, at this moment on the electric capacity C
Electric charge and voltage are controlled by the charging signals Vch and discharge signal Vdis.
First metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor use P-channel metal-oxide-semiconductor.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modifications, equivalent substitutions and improvements done etc. should be included within the scope of protection of the invention.
Claims (7)
1. a kind of infrared radiation receiving circuit with fast charge mode, it is characterised in that：Including pre-amplification circuit, adjustable gain
Amplifier, limiting amplifier, bandpass filter, comparator circuit, demodulation output circuit, automatic gain control circuit, charge pump
Circuit, envelope extraction circuit, quick-charging circuit, reference source circuit；
The pre-amplification circuit is sequentially connected the gain adjustable amplifier, limiting amplifier, bandpass filter；
The bandpass filter output point two-way, connects the comparator circuit all the way；Another road is sequentially connected the envelope and carried
Sense circuit, quick-charging circuit and charge pump circuit, for when input noise amplitude is excessive, introducing extra electric current to accelerate
The charging process of the charge pump circuit；
The comparator circuit output point two-way, is exported after the demodulation output circuit is connected all the way；Another road is sequentially connected institute
State and the gain adjustable amplifier is connected after automatic gain control circuit, charge pump circuit, for controlling the adjustable gain to put
The gain of big device；
The reference source circuit exports two paths of signals, is wave filter output center frequency, reference signal respectively；The wave filter is defeated
Go out centre frequency and connect the bandpass filter and the envelope extraction circuit, the reference signal connects the quick charge electricity
Road.
2. a kind of infrared radiation receiving circuit with fast charge mode according to claim 1, it is characterised in that：It is described
Charge pump circuit includes the first charging current source, first switch, the first discharge current source, second switch, electric capacity；Described first fills
Current source first end connects power supply, and the second end is sequentially connected in series the first switch and the electric capacity first end；The electric capacity second
End ground connection；The first discharge current source is connected into a loop after being connected with the second switch with the electric capacity.
3. a kind of infrared radiation receiving circuit with fast charge mode according to claim 2, it is characterised in that：It is described
Charging signals that the folding of first switch is exported by the automatic gain control circuit are controlled；The folding of the second switch by
The discharge signal of automatic gain control circuit output is controlled.
4. a kind of infrared radiation receiving circuit with fast charge mode according to claim 3, it is characterised in that：It is described
The control model of automatic gain control circuit uses simple charge and discharge electrical method, and the simple charge and discharge electrical method is high in the charging signals
Electric capacity is charged during level, electric capacity discharges during the charging signals low level.
5. a kind of infrared radiation receiving circuit with fast charge mode according to claim 3, it is characterised in that：It is described
The control model of automatic gain control circuit uses free time detection method, and the free time detection method is in the charging letter
Electric capacity is charged during number high level, the electric charge during charging signals low level on electric capacity keeps constant.
6. a kind of infrared radiation receiving circuit with fast charge mode according to claim 2, it is characterised in that：It is described
Quick-charging circuit includes comparator, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the second charging current source；The comparison
Device electrode input end connects the envelope extraction circuit, and negative input connects the reference signal, output end connection described the
The grid of one metal-oxide-semiconductor；The source electrode of the source electrode of first metal-oxide-semiconductor, the source electrode of the second metal-oxide-semiconductor and the 3rd metal-oxide-semiconductor is connected with power supply；
The drain electrode of first metal-oxide-semiconductor and the drain electrode of second metal-oxide-semiconductor connect the second charging current source first end, described second
The end of charging current source second is grounded；The grid of second metal-oxide-semiconductor and drain electrode are connected；The grid connection institute of 3rd metal-oxide-semiconductor
The grid of the second metal-oxide-semiconductor is stated, the drain electrode of the 3rd metal-oxide-semiconductor connects the electric capacity first end.
7. a kind of infrared radiation receiving circuit with fast charge mode according to claim 7, it is characterised in that：It is described
First metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor use P-channel metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710049115.3A CN106941358B (en) | 2017-01-23 | 2017-01-23 | A kind of infrared radiation receiving circuit with fast charge mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710049115.3A CN106941358B (en) | 2017-01-23 | 2017-01-23 | A kind of infrared radiation receiving circuit with fast charge mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106941358A true CN106941358A (en) | 2017-07-11 |
| CN106941358B CN106941358B (en) | 2019-05-14 |
Family
ID=59469287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710049115.3A Active CN106941358B (en) | 2017-01-23 | 2017-01-23 | A kind of infrared radiation receiving circuit with fast charge mode |
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| Country | Link |
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| CN (1) | CN106941358B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671422A (en) * | 2020-12-24 | 2021-04-16 | 广州市慧芯电子科技有限公司 | Infrared receiving chip with reusable test port |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0984142A (en) * | 1995-09-19 | 1997-03-28 | Seiko Instr Inc | Remote control receiving circuit |
| US20030098724A1 (en) * | 2001-11-27 | 2003-05-29 | Fujitsu Limited | Receiving circuit |
| CN1518246A (en) * | 2003-01-08 | 2004-08-04 | Ad技术有限公司 | Infrared receiver |
| KR20040105341A (en) * | 2003-06-07 | 2004-12-16 | 주식회사 네오디바이스 | IR receiver having auto gain control circuit for selectively charging and discharging and auto gain control method |
| CN1983876A (en) * | 2005-12-15 | 2007-06-20 | Ad技术有限公司 | An infrared-ray receiver |
| KR20080081761A (en) * | 2007-03-06 | 2008-09-10 | 주식회사 네오디바이스 | Automatic Gain Control Circuit |
| CN102185646A (en) * | 2011-05-26 | 2011-09-14 | 泉芯电子技术(深圳)有限公司 | Infrared receiver |
| CN102355298A (en) * | 2011-05-26 | 2012-02-15 | 泉芯电子技术(深圳)有限公司 | Infrared receiver with digital gain control circuit |
| KR20130126157A (en) * | 2012-05-11 | 2013-11-20 | 주식회사 네오디바이스 | Infrared signal receiver of having gain hold function |
-
2017
- 2017-01-23 CN CN201710049115.3A patent/CN106941358B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0984142A (en) * | 1995-09-19 | 1997-03-28 | Seiko Instr Inc | Remote control receiving circuit |
| US20030098724A1 (en) * | 2001-11-27 | 2003-05-29 | Fujitsu Limited | Receiving circuit |
| CN1518246A (en) * | 2003-01-08 | 2004-08-04 | Ad技术有限公司 | Infrared receiver |
| KR20040105341A (en) * | 2003-06-07 | 2004-12-16 | 주식회사 네오디바이스 | IR receiver having auto gain control circuit for selectively charging and discharging and auto gain control method |
| CN1983876A (en) * | 2005-12-15 | 2007-06-20 | Ad技术有限公司 | An infrared-ray receiver |
| KR20080081761A (en) * | 2007-03-06 | 2008-09-10 | 주식회사 네오디바이스 | Automatic Gain Control Circuit |
| CN102185646A (en) * | 2011-05-26 | 2011-09-14 | 泉芯电子技术(深圳)有限公司 | Infrared receiver |
| CN102355298A (en) * | 2011-05-26 | 2012-02-15 | 泉芯电子技术(深圳)有限公司 | Infrared receiver with digital gain control circuit |
| KR20130126157A (en) * | 2012-05-11 | 2013-11-20 | 주식회사 네오디바이스 | Infrared signal receiver of having gain hold function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671422A (en) * | 2020-12-24 | 2021-04-16 | 广州市慧芯电子科技有限公司 | Infrared receiving chip with reusable test port |
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| Publication number | Publication date |
|---|---|
| CN106941358B (en) | 2019-05-14 |
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