component
INA331IDGKR
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
markdownINA331IDGKR
Texas Instruments · Instrumentation Amplifiers · VSSOP-8
INA331IDGKR 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 | input | Gain-setting resistor connection; configure G = 5 + 5(R2/R1) by connecting external resistors between this pin, REF (pin 5), and VOUT (pin 6). |
| 2 | VIN- | power_in | Negative differential signal input; input common-mode range 0.55V to 3.8V at VS = 5V with input impedance 10^13Ω |
| 3 | VIN+ | power_in | Positive differential signal input; input common-mode range 0.55V to 3.8V at VS = 5V with input impedance 10^13Ω |
| 4 | V- | power_in | Negative supply rail; maximum supply voltage V+ to V- is 7.5V. |
| 5 | REF | input | Reference voltage input that defines zero output voltage level; requires low-impedance connection (160Ω series impedance will degrade CMRR to 80dB). |
| 6 | VOUT | output | Differential output voltage; swings to within 25mV of supply rail at 10kΩ load for gains ≥10; short-circuit current ±48/−32mA typical. |
| 7 | V+ | power_in | Positive supply rail; operating range +2.7V to +5.5V; quiescent current 490µA maximum per channel. |
| 8 | Shutdown | input | Active-low shutdown control input; pulling below 0.8V (at VS = 5V) enables sleep mode with quiescent current <1µA; return to normal operation within microseconds. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
INA331IDGKR - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ina331idgkr-etched.step/ina331idgkr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina331idgkr.step/ina331idgkr.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 2026-09-27, 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).