2 layers22.9 × 50.8 mm
Overview
The LMP7721MA is a precision Op Amp made by Texas Instruments in a SOIC-8 package with 8 pins. -40℃~+125℃ 0.003pA 0.006pA 1 1.3mA 1.5uV/℃ 1.8V~5.5V 100dB 12.76V/us 17MHz 46mA 50uV 6.5nV/√Hz@1kHz Rail-to-rail output Reverse-phase input protection SOIC-8 Precision Op Amps ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LMP7721MA_NOPB, from EasyEDA) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 784 are in stock at JLCPCB (part C124427). 16 open-source boards in 10 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
11- Supply, least
- 1.8 V · V+ – V−, recommended operating min, 0°C to 125°C · p. 4
- Supply, most
- 5.5 V · V+ – V−, recommended operating max, 0°C to 125°C · p. 4
- Supply, least
- 2 V · V+ – V−, recommended operating min, −40°C to 125°C · p. 4
- Supply, absolute maximum
- 6 V · V+ – V−, absolute max · p. 4
- Works from
- -40 °C · operating ambient min · p. 4
- Works up to
- 125 °C · operating ambient max · p. 4
- Junction, hottest
- 150 °C · junction temperature absolute max · p. 4
- Junction to air (D)
- 190 K/W · junction-to-ambient thermal resistance · p. 4
- Takes working
- 1.1 mA · supply current typical, 2.5 V, 25°C · p. 5
- Takes working
- 1.3 mA · supply current typical, 5 V, 25°C · p. 7
- Takes at most
- 1.95 mA · supply current max, 5 V, −40°C to 125°C · p. 7
What it is and has
12- Package
- 8-Pin SOIC · p. 1
- Input bias current
- ±20 fA maximum at 25°C, VCM = 1 V · p. 1
- Input bias current
- ±900 fA maximum at 85°C, VCM = 1 V · p. 1
- Offset voltage
- ±26 µV typical at 25°C, 5 V supply · p. 1
- Offset voltage drift
- −1.5 μV/°C typical · p. 1
- DC open-loop gain
- 120 dB typical · p. 1
- DC CMRR
- 100 dB typical · p. 1
- Input voltage noise
- 6.5 nV/√Hz at 1 kHz, typical · p. 1
- THD
- 0.0007% typical · p. 1
- Gain bandwidth product
- 17 MHz typical · p. 1
- Slew rate
- 12.76 V/μs falling edge, typical · p. 1
- Output
- Rail-to-rail output swing · p. 16
Around it
3- res 100 Ω to 1 kΩ
- between Guard driver output and Guard; Series output resistor for the guard buffer; limits current and helps drive capacitive loads. · p. 21
- res about 100 Ω
- between Supply rail and LMP7721 supply pin; Series resistor in the recommended dedicated supply filter for high-sensitivity applications. · p. 25
- cap 100 uF or larger
- between LMP7721 supply pin and Supply return; Bypass capacitor in the recommended dedicated supply filter for high-sensitivity applications. · p. 25
Specifications
81| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| VIN Differential | min -0.3 · max 0.3 V | 4 | |
| Supply Voltage VS | VS = V+ – V− | min -0.3 · max 6 V | 4 |
| Junction Temperature | max 150 °C | 4 | |
| Infrared or Convection (20 sec) | Soldering Information | max 235 °C | 4 |
| Wave Soldering Lead Temp. (10 sec) | Soldering Information | max 260 °C | 4 |
| Storage temperature, Tstg Tstg | min -65 · max 150 °C | 4 | |
| Electrostatic discharge V(ESD) | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001; ± rating | max 2000 V | 4 |
| Electrostatic discharge V(ESD) | Charged-device model (CDM), per JEDEC specification JESD22-C101; ± rating | max 200 V | 4 |
| Temperature Range | min -40 · max 125 °C | 4 | |
| Supply Voltage VS | VS = V+ – V−; 0°C ≤ TA ≤ 125°C | min 1.8 · max 5.5 V | 4 |
| Supply Voltage VS | VS = V+ – V−; −40°C ≤ TA ≤ 125°C | min 2 · max 5.5 V | 4 |
| Junction-to-ambient thermal resistance RθJA | LMP7721, D, 8 PINS | typ 190 °C/W | 4 |
| Input Offset Voltage VOS | TA = 25°C; V+ = 2.5 V; V− = 0 V; VCM = (V+ + V−)/2; typical ±50 | min -180 · typ 50 · max 180 uV | 5 |
| Input Offset Voltage VOS | –40°C ≤ TJ ≤ 125°C | min -480 · max 480 uV | 5 |
| Input Offset Voltage Drift TC VOS | typ -1.5 · max -4 uV/°C | 5 | |
| Input Bias Current IBIAS | VCM = 1 V; 25°C; typical ±3 | min -20 · typ 3 · max 20 fA | 5 |
| Input Bias Current IBIAS | VCM = 1 V; −40°C to 85°C | min -900 · max 900 fA | 5 |
| Input Bias Current IBIAS | VCM = 1 V; −40°C to 125°C | min -5 · max 5 pA | 5 |
| Input Offset Current IOS | VCM = 1 V; typical ±6; maximum ±40 | typ 6 · max 40 fA | 5 |
| Common-Mode Rejection Ratio CMRR | 0 V ≤ VCM ≤ 1.4 V | min 83 · typ 100 dB | 5 |
| Common-Mode Rejection Ratio CMRR | 0 V ≤ VCM ≤ 1.4 V, –40°C ≤ TJ ≤ 125°C | min 80 dB | 5 |
| Power Supply Rejection Ratio PSRR | 1.8 V ≤ V+ ≤ 5.5 V, V− = 0 V, VCM = 0 | min 84 · typ 92 dB | 5 |
| Power Supply Rejection Ratio PSRR | 1.8 V ≤ V+ ≤ 5.5 V, V− = 0 V, VCM = 0; –40°C ≤ TJ ≤ 125°C | min 80 dB | 5 |
| Input Common-Mode Voltage Range CMVR | CMRR ≥ 80 dB | min -0.3 · max 1.5 V | 5 |
| Input Common-Mode Voltage Range CMVR | CMRR ≥ 78 dB, –40°C ≤ TJ ≤ 125°C | min -0.3 · max 1.5 V | 5 |
| Large Signal Voltage Gain AVOL | VO = 0.15 V to 2.2 V, RL = 2 kΩ to V+/2 | min 88 · typ 107 dB | 5 |
| Large Signal Voltage Gain AVOL | VO = 0.15 V to 2.2 V, RL = 2 kΩ to V+/2; –40°C ≤ TJ ≤ 125°C | min 82 dB | 5 |
| Large Signal Voltage Gain AVOL | VO = 0.15 V to 2.2 V, RL = 10 kΩ to V+/2 | min 92 · typ 120 dB | 5 |
| Large Signal Voltage Gain AVOL | VO = 0.15 V to 2.2 V, RL = 10 kΩ to V+/2; –40°C ≤ TJ ≤ 125°C | min 88 dB | 5 |
| Output Swing High VO | RL = 2 kΩ to V+/2 | min 70 · typ 25 mV from V+ | 5 |
| Output Swing High VO | RL = 2 kΩ to V+/2, –40°C ≤ TJ ≤ 125°C | min 77 mV from V+ | 5 |
| Output Swing High VO | RL = 10 kΩ to V+/2 | min 60 · typ 20 mV from V+ | 5 |
| Output Swing High VO | RL = 10 kΩ to V+/2, –40°C ≤ TJ ≤ 125°C | min 66 mV from V+ | 5 |
| Output Swing Low VO | RL = 2 kΩ to V+/2 | typ 30 · max 70 mV | 5 |
| Output Swing Low VO | RL = 2 kΩ to V+/2, –40°C ≤ TJ ≤ 125°C | max 73 mV | 5 |
| Output Swing Low VO | RL = 10 kΩ to V+/2 | typ 15 · max 60 mV | 5 |
| Output Swing Low VO | RL = 10 kΩ to V+/2, –40°C ≤ TJ ≤ 125°C | max 62 mV | 5 |
| Output Short Circuit Current IO | Sourcing to V−, VIN = 200 mV; momentary open loop test | min 36 · typ 46 mA | 5 |
| Output Short Circuit Current IO | Sourcing to V−, VIN = 200 mV; –40°C ≤ TJ ≤ 125°C; momentary open loop test | min 30 mA | 5 |
| Output Short Circuit Current IO | Sinking to V+, VIN = −200 mV; momentary open loop test | min 7.5 · typ 15 mA | 5 |
| Output Short Circuit Current IO | Sinking to V+, VIN = −200 mV; –40°C ≤ TJ ≤ 125°C; momentary open loop test | min 5 mA | 5 |
| Supply Current IS | TA = 25°C | typ 1.1 · max 1.5 mA | 5 |
| Supply Current IS | –40°C ≤ TJ ≤ 125°C | max 1.75 mA | 5 |
| Slew Rate SR | AV = +1, Rising (10% to 90%) | typ 9.3 V/us | 5 |
| Slew Rate SR | AV = +1, Falling (90% to 10%) | typ 10.8 V/us | 5 |
| Gain Bandwidth Product GBW | typ 15 MHz | 5 | |
| Input-Referred Voltage Noise en | f = 400 Hz | typ 8 nV/ | 5 |
| Input-Referred Voltage Noise en | f = 1 kHz | typ 7 nV/ | 5 |
| Input-Referred Current Noise In | f = 1 kHz | typ 0.01 pA/ | 6 |
| Total Harmonic Distortion + Noise THD+N | f = 1 kHz, AV = 2, RL = 100 kΩ; VO = 0.9 VPP | typ 0.003 % | 6 |
| Total Harmonic Distortion + Noise THD+N | f = 1 kHz, AV = 2, RL = 600 Ω; VO = 0.9 VPP | typ 0.003 % | 6 |
| Input Offset Voltage VOS | TA = 25°C; V+ = 5 V; V− = 0 V; VCM = (V+ + V−)/2; typical ±26 | min -150 · typ 26 · max 150 uV | 6 |
| Input Offset Voltage VOS | –40°C ≤ TJ ≤ 125°C; minimum reproduced as printed | min 450 · max 450 uV | 6 |
| Input Offset Average Drift TC VOS | typ -1.5 · max -4 uV/°C | 6 | |
| Input Offset Current IOS | typical ±6; maximum ±40 | typ 6 · max 40 fA | 6 |
| Common-Mode Rejection Ratio CMRR | 0 V ≤ VCM ≤ 3.7 V | min 84 · typ 100 dB | 6 |
| Common-Mode Rejection Ratio CMRR | 0 V ≤ VCM ≤ 3.7 V, –40°C ≤ TJ ≤ 125°C | min 82 dB | 6 |
| Power Supply Rejection Ratio PSRR | 1.8 V ≤ V+ ≤ 5.5 V, V− = 0 V, VCM = 0 | min 84 · typ 96 dB | 6 |
| Power Supply Rejection Ratio PSRR | 1.8 V ≤ V+ ≤ 5.5 V, V− = 0 V, VCM = 0; –40°C ≤ TJ ≤ 125°C | min 80 dB | 6 |
| Input Common-Mode Voltage Range CMVR | CMRR ≥ 80 dB | min -0.3 · max 4 V | 6 |
| Input Common-Mode Voltage Range CMVR | CMRR ≥ 78 dB, –40°C ≤ TJ ≤ 125°C | min -0.3 · max 4 V | 6 |
| Large Signal Voltage Gain AVOL | VO = 0.3 V to 4.7 V, RL = 2 kΩ to V+/2 | min 88 · typ 111 dB | 6 |
| Large Signal Voltage Gain AVOL | VO = 0.3 V to 4.7 V, RL = 2 kΩ to V+/2; –40°C ≤ TJ ≤ 125°C | min 82 dB | 6 |
| Large Signal Voltage Gain AVOL | VO = 0.3 V to 4.7 V, RL = 10 kΩ to V+/2 | min 92 · typ 120 dB | 6 |
| Large Signal Voltage Gain AVOL | VO = 0.3 V to 4.7 V, RL = 10 kΩ to V+/2; –40°C ≤ TJ ≤ 125°C | min 88 dB | 6 |
| Output Swing High VO | RL = 2 kΩ to V+/2 | min 70 · typ 30 mV from V+ | 6 |
| Output Swing Low VO | RL = 2 kΩ to V+/2 | typ 31 · max 70 mV | 6 |
| Output Swing Low VO | RL = 10 kΩ to V+/2 | typ 20 · max 60 mV | 6 |
| Output Short Circuit Current IO | Sourcing to V−, VIN = 200 mV; momentary open loop test | min 46 · typ 60 mA | 7 |
| Output Short Circuit Current IO | Sourcing to V−, VIN = 200 mV; –40°C ≤ TJ ≤ 125°C; momentary open loop test | min 38 mA | 7 |
| Output Short Circuit Current IO | Sinking to V+, VIN = −200 mV; momentary open loop test | min 10.5 · typ 22 mA | 7 |
| Output Short Circuit Current IO | Sinking to V+, VIN = −200 mV; –40°C ≤ TJ ≤ 125°C; momentary open loop test | min 6.5 mA | 7 |
| Supply Current IS | TA = 25°C | typ 1.3 · max 1.7 mA | 7 |
| Supply Current IS | –40°C ≤ TJ ≤ 125°C | max 1.95 mA | 7 |
| Slew Rate SR | AV = +1, Rising (10% to 90%) | typ 10.43 V/us | 7 |
| Slew Rate SR | AV = +1, Falling (90% to 10%) | typ 12.76 V/us | 7 |
| Gain Bandwidth Product GBW | typ 17 MHz | 7 | |
| Input-Referred Voltage Noise en | f = 400 Hz | typ 7.5 nV/ | 7 |
| Input-Referred Voltage Noise en | f = 1 kHz | typ 6.5 nV/ | 7 |
| Total Harmonic Distortion + Noise THD+N | f = 1 kHz, AV = 2, RL = 100 kΩ; VO = 4 VPP | typ 0.0007 % | 7 |
| Total Harmonic Distortion + Noise THD+N | f = 1 kHz, AV = 2, RL = 600Ω; VO = 4 VPP | typ 0.0007 % | 7 |
Pins, by the datasheet
8- 1 IN+
- Non-Inverting Input. · p. 3
- 2 N/C
- No internal connection; recommended to connect to system guard trace. · p. 3
- 3 V-
- Negative Power Supply. · p. 3
- 4 VOUT
- Output. · p. 3
- 5 N/C
- No Internal Connection. · p. 3
- 6 V+
- Positive Power Supply. · p. 3
- 7 N/C
- No internal connection; recommended to connect to system guard trace. · p. 3
- 8 IN-
- Inverting Input. · p. 3
Ordering codes, by the datasheet
4- LMP7721MA/NOPB
- SOIC (D), 8 pins · 95 per tube; operating temperature -40 to 125 °C. · p. 27
- LMP7721MA/NOPB.A
- SOIC (D), 8 pins · 95 per tube; operating temperature -40 to 125 °C. · p. 27
- LMP7721MAX/NOPB
- SOIC (D), 8 pins · 2500 per large tape and reel; operating temperature -40 to 125 °C. · p. 27
- LMP7721MAX/NOPB.A
- SOIC (D), 8 pins · 2500 per large tape and reel; operating temperature -40 to 125 °C. · p. 27
Parameters
21- Common Mode Rejection Ratio(CMRR)
- 100dB
- Current - Supply
- 1.1mA
- Current - Supply(Max)
- 1.95mA
- Features
- Reverse-phase input protection
- Gain Bandwidth Product
- 17MHz
- Ib - Input Bias Current
- 0.003pA
- Input Offset Current(Ios)
- 0.006pA
- Input Offset Voltage Drift(Vos TC)
- 1.5uV/℃
- Input Voltage Noise Density
- 6.5nV/√Hz@1kHz
- Junction Temperature(Max)
- 150℃
- Number of Channels
- 1
- Operating Temperature
- -40℃~+125℃
- Output Current
- 46mA
- Quiescent Current(Iq)
- 1.3mA
- Rail to Rail
- Rail-to-rail output
- Single Supply
- 1.8V~5.5V
- Slew Rate
- 12.76V/us
- Thermal Resistance(Junction to Ambient)
- 190℃/W
- Voltage - Supply
- 1.8V~5.5V
- Voltage - Supply(Absolute Max)
- 6V
- Vos - Input Offset Voltage
- 50uV
Order codes
1- LMP7721MA/NOPBLCSC C124427
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | IN+ | Unspecified |
| 2 | N/C | Unspecified |
| 3 | V- | Unspecified |
| 4 | VOUT | Unspecified |
| 5 | N/C | Unspecified |
| 6 | V+ | Unspecified |
| 7 | N/C | Unspecified |
| 8 | IN- | Unspecified |
Open-source boards using it
All 16- 4 layers100 × 100 mm
- 4 layers116.8 × 68.6 mm
- 2 layers139.7 × 41.9 mm
Kstat mainboard
nfroehberg/GlazerLab_KStat
Firmware, PCB design and Python interface for the KStat potentiostat developed in the Glazer Lab, University of Hawaii.
121 parts - 2 layers70.4 × 35.3 mm
- 2 layers14.7 × 15.2 mm
- 2 layers22.9 × 50.8 mm
Potentiostat featherwing
iorodeo/rodeostat_featherwing
Design files for the Rodeostat FeatherWing
16 parts4CC-BY-4.0 - 4 layers100 × 90 mm
Sensor dmf board
esyywar/Digital-Microfluidic-Control
A complete digital microfluidic system including PCB hardware, arduino microcontroller firmware and real-time control software.
58 parts2
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/ti/LMP7721MA" title="LMP7721MA in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ti/LMP7721MA.jpg" alt="LMP7721MA" width="1200" height="900">[](https://pcbkit.io/parts/ti/LMP7721MA)Questions
Is there a KiCad symbol and footprint for the LMP7721MA?
Yes. The symbol is EasyEDA_Cloud:LMP7721MA_NOPB and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LMP7721MA?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the LMP7721MA datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LMP7721MA?
JLCPCB lists it as part C124427, with 784 in stock; the sellers' links on this page open their listings.
What can replace the LMP7721MA?
Parts like it in the library: the GS8552-SR by Gainsil, the OPA2192ID by Texas Instruments, the OPA197ID by Texas Instruments and the OPA189ID by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LMP7721MA?
16 boards in 10 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
GS8552-SR
SOIC-8-2.75V~-900mV、900mV~2.75V -40℃~+125℃ 0.95V/us 1.8MHz 1.8V~5.5V 10nV/℃ 10pA 110dB 180uA 2 20pA 30uV 38nV/√Hz@1kHz 65mA EMI filtering/RF suppression、Zero drift / auto-zero Rail-to-Rail Input, Rail-to-Rail Output SOIC-8 Precision Op Amps ROHSGainsilPrecision Op AmpsOPA2192ID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 10MHz 140dB 1mA 2 200nV/℃ 20V/us 2pA 4.5V~36V 5.5nV/√Hz@1kHz 5pA 5uV 65mA EMI filtering/RF suppression、Zero drift / auto-zero Rail-to-Rail Input, Rail-to-Rail Output SOIC-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op AmpsOPA197ID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 1 10MHz 120dB 1mA 20V/us 25uV 2pA 4.5V~36V 5.5nV/√Hz@1kHz 500nV/℃ 5pA 65mA EMI filtering/RF suppression、Reverse-phase input protection Rail-to-Rail Input, Rail-to-Rail Output SOIC-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op AmpsOPA189ID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 1 1.7mA 140pA 14MHz 168dB 20V/us 3uV 4.5V~36V 5.2nV/√Hz@1kHz 5nV/℃ 65mA 70pA EMI filtering/RF suppression、Zero drift / auto-zero、ESD protection、Reverse-phase input protection Rail-to-rail output SOP-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op AmpsRS8552XK
SOIC-8-2.75V~-1.35V、1.35V~2.75V -40℃~+125℃ 10pA 130dB 1pA 1uV 2 2.7V/us 2.7V~5.5V 35nV/√Hz@1kHz 4.5MHz 50mA 5nV/℃ 640uA Rail-to-Rail Input, Rail-to-Rail Output Zero drift / auto-zero、Built-in compensation、Reverse-phase input protection SOIC-8 Precision Op Amps ROHSJiangsu RUNIC TechPrecision Op AmpsOPA2388ID
SOIC-8-2.75V~-1.25V、1.25V~2.75V -40℃~+125℃ 1.9mA 10MHz 140dB 2 2.5V~5.5V 250nV 30pA 5V/us 5nV/℃ 60mA 700pA 7nV/√Hz@1kHz EMI filtering/RF suppression、Zero drift / auto-zero、Reverse-phase input protection Rail-to-Rail Input, Rail-to-Rail Output SOIC-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op AmpsOPA182ID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 1 10V/us 140pA 168dB 3nV/℃ 4.5V~36V 450nV 5.7nV/√Hz@1kHz 50pA 5MHz 65mA 850uA EMI filtering/RF suppression、Zero drift / auto-zero、ESD protection、Reverse-phase input protection Rail-to-rail output SOIC-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op AmpsOPA388ID
SOIC-8-2.75V~-1.25V、1.25V~2.75V -40℃~+125℃ 1 10MHz 140dB 2.4mA 2.5V~5.5V 250nV 30pA 5V/us 5nV/℃ 60mA 60pA 7nV/√Hz@1kHz EMI filtering/RF suppression、Zero drift / auto-zero、Built-in compensation Rail-to-Rail Input, Rail-to-Rail Output SOIC-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op Amps