# INA118PB

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

INA118PB 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 pin: for gains greater than 1, a gain resistor is placed between pin 1 and pin 8 (gain G = 1 + 50 kΩ / RG). |
| 2 | V-IN | power_in | Negative (inverting) input of the instrumentation amplifier. |
| 3 | V+IN | power_in | Positive (non-inverting) input of the instrumentation amplifier. |
| 4 | V- | power_in | Negative power supply; the device operates from ±2.25 V to ±18 V supplies (recommended VS range ±2.25 to ±18 V, absolute maximum ±18 V). |
| 5 | Ref | input | Reference input that must be driven by a low-impedance source or connected to ground, since the output is referred to this pin. |
| 6 | VO | output | Amplifier output, referred to the Ref pin. |
| 7 | V+ | power_in | Positive power supply; the device operates from ±2.25 V to ±18 V supplies (recommended VS range ±2.25 to ±18 V, absolute maximum ±18 V). |
| 8 | RG | passive | Gain-setting pin: for gains greater than 1, a gain resistor is placed between pin 8 and pin 1 (gain G = 1 + 50 kΩ / RG). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA118PB`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files: `ina118pb-etched.step` / `ina118pb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina118pb.step` / `ina118pb.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/ina118) (32 pp, sha256 `ab5b08064f8a8cb3`, retrieved 2026-10-11, 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/ina118pb-datasheet.pdf)