component
INA237AIDGSR
Public Made by Adomby adom
Texas Instruments Current Sense Amplifiers, VSSOP-10-0.5mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownINA237AIDGSR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina237aidgsr.step/ina237aidgsr.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).