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INA2331AIPWR
Public Made by Adomby adom
Texas Instruments Instrumentation Amplifiers, TSSOP-14. 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
markdownINA2331AIPWR
Texas Instruments · Instrumentation Amplifiers · TSSOP-14
INA2331AIPWR from Texas Instruments, in a TSSOP-14. 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 | RGA | passive | Channel A gain-setting terminal; external R1/R2 per G = 5 + 5(R2/R1) set gain above 5V/V, and shorting VOUT to RG gives G = 5. |
| 2 | VIN-A | power_in | Channel A inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA. |
| 3 | VIN+A | power_in | Channel A non-inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA. |
| 4 | V- | power_in | Negative supply (or ground in single-supply operation), supply range V+ to V- of +2.7V to +5.5V specified and 7.5V absolute maximum. |
| 5 | VIN+B | power_in | Channel B non-inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA. |
| 6 | VIN-B | power_in | Channel B inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA. |
| 7 | RGB | passive | Channel B gain-setting terminal; external R1/R2 per G = 5 + 5(R2/R1) set gain above 5V/V, and shorting VOUT to RG gives G = 5. |
| 8 | Shutdown B | input | Channel B shutdown control, nominally connected to V+; pulled below 0.8V on a 5V supply it enters sleep mode with high output impedance. |
| 9 | VOUTB | output | Channel B rail-to-rail output, optimized for loads of 10kΩ or greater and swinging to within 25mV of the rail at 10kΩ. |
| 10 | REFB | input | Channel B reference terminal defining zero output level; needs a low-impedance connection and must be at least 1.2V below the positive supply. |
| 11 | V+ | power_in | Positive supply, +2.7V to +5.5V specified (+2.5V to +5.5V operating), 7.5V absolute maximum V+ to V-, decoupled with 0.1µF. |
| 12 | REFA | input | Channel A reference terminal defining zero output level; needs a low-impedance connection and must be at least 1.2V below the positive supply. |
| 13 | VOUTA | output | Channel A rail-to-rail output, optimized for loads of 10kΩ or greater and swinging to within 25mV of the rail at 10kΩ. |
| 14 | Shutdown A | input | Channel A shutdown control, nominally connected to V+; pulled below 0.8V on a 5V supply it enters sleep mode with high output impedance. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
INA2331AIPWR - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
ina2331aipwr-etched.step/ina2331aipwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina2331aipwr.step/ina2331aipwr.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 2026-10-05, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).