# INA110KU

**Texas Instruments** · Instrumentation Amplifiers · SOIC-16

INA110KU from Texas Instruments, in a SOIC-16. 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 | -In | input | Inverting input to the FET-input instrumentation amplifier; inputs are protected for differential and common-mode voltages up to ±VCC, and a return path for input bias current must be provided. |
| 2 | +In | input | Non-inverting input to the FET-input instrumentation amplifier; inputs are protected for differential and common-mode voltages up to ±VCC, and a return path for input bias current must be provided. |
| 3 | RG | passive | Gain-set pin; an external resistor RG connected between pin 3 and pins 11, 12 or 16 sets gains other than 1, 10, 100, 200 and 500, with G = 1 + [40k/(RG + 50Ω)]. |
| 4 | Input Offset Adj. | passive | Input-stage offset adjustment pin; offset is adjustable to zero, and adjusting it adds drift of approximately 0.33µV/°C per 100µV of input offset adjusted. |
| 5 | Input Offset Adj. | passive | Input-stage offset adjustment pin (second terminal of the input offset adjust pair); offset is adjustable to zero, and adjusting it adds drift of approximately 0.33µV/°C per 100µV of input offset adjusted. |
| 6 | Reference | input | Reference terminal for output offsetting; series resistance in the reference path degrades CMR, so it should be kept low and driven through a buffer. |
| 7 | -VCC | power_in | Negative power supply; the INA110 operates from ±6V to ±18V supplies (rated ±15V), and supplies should be decoupled with 1µF tantalum capacitors close to the amplifier. |
| 8 | +VCC | power_in | Positive power supply; the INA110 operates from ±6V to ±18V supplies (rated ±15V), and supplies should be decoupled with 1µF tantalum capacitors close to the amplifier. |
| 9 | Output | output | Amplifier output; with ±15V supplies and RL = 2kΩ the output swings to ±10V minimum over temperature, and capacitive load stability is specified to 5000 pF. |
| 10 | Output Sense | input | Output sense feedback point, connected at the load to compensate IR drops from load current; avoid capacitance from the output to the gain-set, offset-adjust and input pins to keep stability. |
| 11 | x500 | passive | Internal gain-set connection for a gain of 500 V/V; connect to pin 3 (RG) to select this gain. |
| 12 | x100 | passive | Internal gain-set connection for a gain of 100 V/V; connect to pin 3 (RG) to select this gain. |
| 13 | x10 | passive | Internal gain-set connection for a gain of 10 V/V; connect to pin 3 (RG) to select this gain. |
| 14 | Output Offset Adj. | passive | Output-stage offset adjustment pin; output offset is adjustable to zero with the offset error adjustable at the reference point without appreciable drift degradation. |
| 15 | Output Offset Adj. | passive | Output-stage offset adjustment pin (second terminal of the output offset adjust pair); output offset is adjustable to zero with the offset error adjustable at the reference point without appreciable drift degradation. |
| 16 | x200 | passive | Internal gain-set connection for a gain of 200 V/V; connect to pin 3 (RG) to select this gain. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Amplifiers/Comparators |
| Pins | 16 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Range of Gain |  | 1 |  | 800 | V/V |  | 3 |
| Capacitive Load Stability |  |  |  | 5000 | pF |  | 3 |
| Output Voltage over temperature |  | 10 | 12.7 |  | V | RL = 2kΩ, over temperature | 3 |
| Output Current over temperature |  | 5 | 25 |  | mA | over temperature | 3 |
| Range, Linear Response |  | 10 | 12 |  | V | VIN Diff. = 0V | 3 |
| Voltage Range (supply) | ±VCC | 6 |  | 18 | V |  | 4 |
| Quiescent Current |  |  | 3 | 4.5 | mA | VO = 0V | 4 |
| Operation temperature range (P, U) |  | -25 |  | 85 | °C |  | 4 |
| Storage temperature range (P, U) |  | -40 |  | 85 | °C |  | 4 |
| θJA | θJA |  | 100 |  | °C/W |  | 4 |
| Supply Voltage | ±VCC |  |  | 18 | V | printed as ±18V | 2 |
| Operating Temperature Range (P, U) |  | -25 |  | 85 | °C | P, U grade | 2 |
| Storage Temperature Range (P, U) |  | -40 |  | 85 | °C | P, U grade | 2 |
| Lead Temperature (soldering) |  |  |  | 260 | °C | soldering, 3s: U | 2 |

## CAD (KiCad official)

- Symbol: `INA110KU`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files: `ina110ku-etched.step` / `ina110ku-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina110ku.step` / `ina110ku.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/ina110) (22 pp, sha256 `b609dd0283f48758`, retrieved 2026-10-08, tier: lcsc)
- **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/ina110ku-datasheet.pdf)