# REF200AU

**Texas Instruments** · Current-Sensing Amplifiers · SOIC-8

REF200AU from Texas Instruments, in a SOIC-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 | I1 Low | passive | Current source 1 low terminal; two-terminal floating source with 2.5 V to 40 V compliance. |
| 2 | I2 Low | passive | Current source 2 low terminal; two-terminal floating source with 2.5 V to 40 V compliance. |
| 3 | Mirror Common | passive | Current mirror common terminal. |
| 4 | Mirror Output | passive | Current mirror output terminal; output impedance 40 to 100 MΩ for 2 V to 40 V. |
| 5 | Mirror Input | passive | Current mirror input terminal; input voltage typically 1.4 V. |
| 6 | Substrate | passive | Substrate, usually connected to the most negative potential in the system. |
| 7 | I2 High | passive | Current source 2 high terminal; nominal 100 µA source. |
| 8 | I1 High | passive | Current source 1 high terminal; nominal 100 µA source. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers |
| Pins | 8 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Current accuracy |  |  | 0.25 | 1 | % | TA = 25°C, VS = 15 V | 4 |
| Current match |  |  | 0.25 | 1 | % | TA = 25°C, VS = 15 V | 4 |
| Current source temperature drift |  |  | 25 |  | ppm/°C | Specified temperature range | 4 |
| Current source output impedance |  | 20 | 100 |  | MΩ | 2.5 V to 40 V | 4 |
| Current source output impedance |  | 200 | 500 |  | MΩ | 3.5 V to 30 V | 4 |
| Current source noise |  |  | 1 |  | nAp-p | BW = 0.1 Hz to 10 Hz | 4 |
| Current source noise |  |  | 20 |  | pA/√Hz | f = 10 kHz | 4 |
| Current source capacitance |  |  | 10 |  | pF |  | 4 |
| Current mirror gain |  | 0.995 | 1 | 1.005 |  | I = 100 µA | 4 |
| Current mirror temperature drift |  |  | 25 |  | ppm/°C | I = 100 µA | 4 |
| Current mirror output impedance |  | 40 | 100 |  | MΩ | 2 V to 40 V | 4 |
| Current mirror nonlinearity |  |  | 0.05 |  | % | I = 0 µA to 250 µA | 4 |
| Current mirror input voltage |  |  | 1.4 |  | V | I = 100 µA | 4 |
| Current mirror frequency response (-3 dB) |  |  | 5 |  | MHz | Transfer | 4 |
| Applied voltage |  | -6 |  | 40 | V |  | 4 |
| Reverse current |  | -350 |  |  | µA |  | 4 |
| Voltage between any two sections |  | -80 |  | 80 | V |  | 4 |
| Operating temperature |  | -40 |  | 85 | °C |  | 4 |
| Storage temperature | Tstg | -40 |  | 125 | °C |  | 4 |
| Electrostatic discharge, CDM | V(ESD) | -750 |  | 750 | V | JESD22-C101 | 4 |
| Compliance voltage | VCOMP | 2.5 |  | 40 | V |  | 4 |
| Specified temperature range | TA | -25 |  | 85 | °C |  | 4 |

## CAD (KiCad official)

- Symbol: `REF200AU`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ref200au-etched.step` / `ref200au-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref200au.step` / `ref200au.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/lit/ds/symlink/ref200au.pdf) (34 pp, sha256 `2e13b890f7083207`, retrieved 2026-10-23, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/ref200au-datasheet.pdf)