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INA131AP
Public Made by Adomby adom
Texas Instruments Instrumentation Amplifiers, PDIP-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
markdownINA131AP
Texas Instruments · Instrumentation Amplifiers · PDIP-8
INA131AP from Texas Instruments, in a PDIP-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 pin; an external RG between pins 1 and 8 raises gain above 100 per G = 100 + 250kΩ/RG (250kΩ term accurate to ±40%), and it is left open for G = 100. |
| 2 | V-IN | power_in | Inverting input, protected to ±40V even with no supply present, and it needs a bias current return path. |
| 3 | V+IN | power_in | Non-inverting input, protected to ±40V even with no supply present, and it needs a bias current return path. |
| 4 | V- | power_in | Negative supply, rated for supply voltage up to ±18V (±2.25V to ±18V operating), with a 0.1µF decoupling capacitor recommended. |
| 5 | Ref | input | Output reference terminal, normally grounded, and it must be a low-impedance connection to preserve common-mode rejection (5Ω in series degrades 110dB CMR to about 106dB). |
| 6 | VO | output | Output, VO = 100(V+IN - V-IN) referred to Ref, with stable operation up to 1000pF load and short-circuit current of +20/-15mA. |
| 7 | V+ | power_in | Positive supply, rated for supply voltage up to ±18V (±2.25V to ±18V operating), with a 0.1µF decoupling capacitor recommended. |
| 8 | RG | passive | Gain-setting resistor pin; an external RG between pins 8 and 1 raises gain above 100 per G = 100 + 250kΩ/RG, and it is left open for G = 100. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | PDIP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
INA131AP - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files:
ina131ap-etched.step/ina131ap-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina131ap.step/ina131ap.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (13 pp, sha256
b6c143127ab827ad, retrieved 2026-10-01, 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).