component
INA331AIDGKT
Public Made by Adomby adom
Texas Instruments Instrumentation Amplifiers, VSSOP-8. 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
markdownINA331AIDGKT
Texas Instruments · Instrumentation Amplifiers · VSSOP-8
INA331AIDGKT from Texas Instruments, in a VSSOP-8. 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 | RG | passive | Gain-setting resistor terminal; connect external resistors between this pin and V- to set gain G = 5 + 5(R2/R1) for gains greater than 5V/V. |
| 2 | VIN- | power_in | Negative differential input signal terminal; common-mode range 0.55V to 3.8V at 5V supply; input impedance 10¹³Ω |
| 3 | VIN+ | power_in | Positive differential input signal terminal; common-mode range 0.55V to 3.8V at 5V supply; input impedance 10¹³Ω |
| 4 | V- | power_in | Negative power supply pin (ground in single-supply or negative rail in dual-supply mode); maximum supply voltage V+ to V- of 7.5V. |
| 5 | REF | input | Reference voltage input defining zero output level; requires low-impedance source ≤160Ω to preserve CMRR ≥80dB. |
| 6 | VOUT | output | Amplified differential output signal; swings within 50mV of supply rails for gains ≥10 with 10kΩ load; slew rate 5V/µs typical. |
| 7 | V+ | power_in | Positive power supply input; specified operating range +2.7V to +5.5V with quiescent current 415µA to 490µA. |
| 8 | Shutdown | input | Shutdown control input; pull below 0.8V to enter sleep mode drawing <2µA; float or tie to V+ for normal operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
INA331AIDGKT - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ina331aidgkt-etched.step/ina331aidgkt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina331aidgkt.step/ina331aidgkt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (24 pp, sha256
b563b3023a3cb8c8, retrieved 2026-09-26, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).