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INA237AIDGSR

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Texas Instruments Current Sense Amplifiers, VSSOP-10-0.5mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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INA237AIDGSR

Texas Instruments · Current Sense Amplifiers · VSSOP-10-0.5mm

INA237AIDGSR from Texas Instruments, in a VSSOP-10-0.5mm. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 A1 input I2C address pin; connect to GND, SCL, SDA, or VS to select the device address (sampled on each bus transaction).
2 A0 input I2C address pin; connect to GND, SCL, SDA, or VS to select the device address (sampled on each bus transaction).
3 ALERT output Open-drain alert output, active low by default (polarity configurable via APOL); must be pulled up externally, absolute maximum VALERT is -0.3 V to VS + 0.3 V.
4 SDA bidirectional Open-drain bidirectional I2C data line; absolute maximum VIO is -0.3 V to 6 V.
5 SCL input I2C clock input; absolute maximum VIO is -0.3 V to 6 V.
6 VS power_in Power supply, 2.7 V to 5.5 V (recommended operating range); absolute maximum 6 V.
7 GND power_in Ground reference for the device.
8 VBUS power_in Bus voltage input, measured referenced to GND over 0 V to 85 V; absolute maximum -0.3 V to 85 V.
9 IN- input Negative differential shunt input; connect to the load side of the sense resistor for high-side sensing or to the ground side for low-side sensing; common-mode range -0.3 V to 85 V.
10 IN+ input Positive differential shunt input; connect to the supply side of the sense resistor for high-side sensing or to the load side for low-side sensing; common-mode range -0.3 V to 85 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VSSOP-10-0.5mm
Category Amplifiers/Comparators
Pins 10

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage (absolute maximum) VS 6 V 3
Differential input voltage (absolute maximum) (VIN+)-(VIN-) -40 40 V 3
Common-mode input voltage (absolute maximum) VIN+, VIN- -0.3 85 V 3
VBUS voltage (absolute maximum) VVBUS -0.3 85 V 3
ALERT voltage (absolute maximum) VALERT -0.3 V Maximum is VS + 0.3 V 3
SDA, SCL voltage (absolute maximum) VIO -0.3 6 V 3
Input current into any pin (absolute maximum) IIN 5 mA 3
Digital output current (absolute maximum) IOUT 10 mA 3
Junction temperature (absolute maximum) TJ 150 °C 3
Storage temperature (absolute maximum) Tstg -65 150 °C 3
Common-mode input voltage range (recommended) VCM -0.3 85 V 4
Operating supply voltage range (recommended) VS 2.7 5.5 V 4
Ambient temperature (recommended) TA -40 125 °C 4
Common-mode input voltage range VCM -0.3 85 V TA = -40°C to +125°C 5
VBUS bus voltage input range VVBUS 0 85 V 5
Common-mode rejection CMRR 120 140 dB -0.3V < VCM < 85V, TA = -40°C to +125°C 5
Shunt voltage input range, ADCRANGE = 0 VDIFF -163.84 163.84 mV TA = -40°C to +125°C, ADCRANGE = 0 5
Shunt voltage input range, ADCRANGE = 1 VDIFF -40.96 40.96 mV TA = -40°C to +125°C, ADCRANGE = 1 5
Shunt offset voltage Vos -50 15 50 µV VCM = 0V 5
Shunt offset voltage drift dVos/dT -20 2 20 nV/°C TA = -40°C to +125°C 5
Shunt offset vs power supply (PSRR) PSRR -1 0.1 1 µV/V VS = 2.7 V to 5.5 V, TA = -40°C to +125°C 5
VBUS offset voltage Vos_bus -5 1 5 mV VBUS = 20mV 5
VBUS offset voltage drift dVos/dT -100 20 100 µV/°C TA = -40°C to +125°C 5
Input bias current IB 0.1 2.5 nA Either input IN+ or IN-, VCM = 85V 5
VBUS pin input impedance ZVBUS 0.8 1 1.2 MΩ Active mode 5
VBUS pin leakage current IVBUS 10 nA Shutdown mode, VBUS = 85V 5
Shunt voltage gain error GSERR -0.3 0.1 0.3 % 5
Shunt voltage gain error drift GS_DRFT -50 50 ppm/°C 5
VBUS voltage gain error GBERR -0.3 0.1 0.3 % 5
VBUS voltage gain error drift GB_DRFT -50 50 ppm/°C 5
Total power measurement error (TME) PTME -1.6 1.6 % TA = -40°C to +125°C, full scale 5
Integral nonlinearity (INL) INL -2 2 m% 5
Internal oscillator frequency tolerance FOSC_TOL -0.5 0.5 % TA = 25°C 5
Internal oscillator frequency tolerance FOSC_TOL -1 1 % TA = -40°C to +125°C 5
Temperature sensor measurement range -40 125 °C 6
Temperature sensor accuracy -1 0.15 1 °C TA = 25°C 6
Temperature sensor accuracy -2 0.2 2 °C TA = -40°C to +125°C 6
Supply voltage VS 2.7 5.5 V 6
Quiescent current IQ 640 750 µA VSENSE = 0V 6
Quiescent current over temperature IQ 1.1 mA VSENSE = 0V, TA = -40°C to +125°C 6
Shutdown quiescent current IQSD 2.8 5 µA Shutdown mode 6
Device startup time, power-on (NPOR) TPOR 300 µs Power-on (NPOR) 6
Device startup time from shutdown TPOR 60 µs Exit from shutdown mode 6
Logic input level, high VIH 1.2 5.5 V SDA, SCL 6
Logic input level, low VIL 0.4 V Minimum is GND 6
Logic output level, low VOL 0.4 V IOL = 3mA; minimum is GND 6
Digital input leakage current IIO_LEAK -1 1 µA 0 ≤ VIN ≤ VS 6
Shunt voltage input-to-supply PSRR, VBUS offset vs supply PSRR VBUS 1.1 mV/V VS = 2.7 V to 5.5 V 5
Differential input impedance RDIFF 92 kΩ Active mode, VIN+ - VIN- < 164mV 5
Internal oscillator frequency FOSC 1 MHz 5
Differential nonlinearity (DNL) DNL 0.2 LSB 5
Junction-to-ambient thermal resistance RθJA 177.6 °C/W DGS (VSSOP) 10-pin 4
Junction-to-case (top) thermal resistance RθJC(top) 66.4 °C/W DGS (VSSOP) 10-pin 4
Junction-to-board thermal resistance RθJB 99.5 °C/W DGS (VSSOP) 10-pin 4
Junction-to-top characterization parameter ΨJT 9.7 °C/W DGS (VSSOP) 10-pin 4
Junction-to-board characterization parameter YJB 97.6 °C/W DGS (VSSOP) 10-pin 4

CAD (KiCad official)

  • Symbol: INA237AIDGSR
  • Footprint: Package_SO:MSOP-10_3x3mm_P0.5mm
  • 3D model: VSSOP-10-0.5mm (KiCad packages3D, STEP)
  • 3D model files: ina237aidgsr-etched.step / ina237aidgsr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ina237aidgsr.step / ina237aidgsr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (43 pp, sha256 1412f93cd0bac7a6, retrieved 2026-10-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF