# INA117P

**Texas Instruments** · Differential Amplifiers · PDIP-8

INA117P 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 | RefB | input | Reference B input; in the transfer function V0 = V3 - V2 + 20 × V5 - 19 × V1 it contributes -19 × V1, and a series resistor on this pin reduces CMRR (4 Ω reduces it from 86 dB to 72 dB). |
| 2 | -In | input | Inverting signal input; signal inputs withstand ±200 V continuous common-mode (±500 V peak for 0.1 s), and a series resistor above 75 Ω reduces CMR from 86 dB to 72 dB. |
| 3 | +In | input | Non-inverting signal input; in the basic unit-gain configuration the output equals V3 - V2, and signal inputs withstand ±200 V continuous common-mode. |
| 4 | V- | power_in | Negative power supply; recommended range is ±5 V to ±18 V for dual supply or 10 V to 36 V for single supply, with an absolute maximum of ±22 V across V+ and V-. |
| 5 | RefA | input | Reference A input; in the transfer function V0 = V3 - V2 + 20 × V5 - 19 × V1 it contributes +20 × V5, and a series resistor on this pin reduces CMRR (4 Ω reduces it from 86 dB to 72 dB). |
| 6 | Output | output | Amplifier output; in the basic unit-gain configuration it equals the differential input voltage between pins 2 and 3 (V0 = V3 - V2). |
| 7 | V+ | power_in | Positive power supply; recommended range is ±5 V to ±18 V for dual supply or 10 V to 36 V for single supply, with an absolute maximum of ±22 V across V+ and V-. |
| 8 | NC | unconnected | No internal connection; may be grounded or left unconnected. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | PDIP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `INA117P`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files: `ina117p-etched.step` / `ina117p-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina117p.step` / `ina117p.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/ina117) (33 pp, sha256 `aaa10aab5fa70095`, retrieved 2026-10-08, 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`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/ina117p-datasheet.pdf)