# AD8422BRZ-R7

**Analog Devices** · Instrumentation Amplifiers · SOIC-8

AD8422BRZ-R7 from Analog Devices, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | -IN | input | Negative differential input with input impedance 200 GΩ||2 pF and working voltage range −VS + 1.2 to +VS − 1.1 V at ±1.8 V to ±18 V supply. |
| 2 | RG | passive | Gain setting resistor terminal; connect external resistor to set gain per formula G = 1 + (19.8 kΩ/RG). |
| 3 | RG | passive | Gain setting resistor terminal; connect external resistor to set gain per formula G = 1 + (19.8 kΩ/RG). |
| 4 | +IN | input | Positive differential input with input impedance 200 GΩ||2 pF and working voltage range −VS + 1.2 to +VS − 1.1 V at ±1.8 V to ±18 V supply. |
| 5 | -VS | power_in | Negative supply voltage pin; −1.8 V to −18 V dual supply or 0 V reference for single supply operation with maximum rated voltage ±1.8 V to ±18 V. |
| 6 | REF | input | Reference voltage input pin for output DC offset adjustment; voltage range ±VS ± 0.3 V, requires low impedance source below 1 Ω for best performance. |
| 7 | VOUT | output | Output voltage pin with rail-to-rail swing from −VS + 0.2 to +VS − 0.2 V at 10 kΩ load and continuous short-circuit current protection at 20 mA. |
| 8 | +VS | power_in | Positive supply voltage pin; +1.8 V to +18 V dual supply or 3.6 V to 36 V single supply operation with maximum rated voltage ±1.8 V to ±18 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `AD8422BRZ-R7`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ad8422brz-r7-etched.step` / `ad8422brz-r7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad8422brz-r7.step` / `ad8422brz-r7.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Analog Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588896346275659776) (24 pp, sha256 `2fdd0df3e17faa1e`, retrieved 2026-09-18, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-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).

[Datasheet PDF](docs/ad8422brz-r7-datasheet.pdf)