# ADA4940-1ARZ-R7

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

ADA4940-1ARZ-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 input summing node; input common-mode voltage range −VS − 0.2 V to +VS − 1.2 V. |
| 2 | VOCM | input | Output common-mode voltage control input with 250 kΩ input impedance for setting output common-mode level. |
| 3 | +VS | power_in | Positive supply voltage; operating range 3 V to 6 V for SOIC package. |
| 4 | +OUT | output | Positive differential output for load connection; voltage swing −VS + 0.1 V to +VS − 0.1 V. |
| 5 | −OUT | output | Negative differential output for load connection; voltage swing −VS + 0.1 V to +VS − 0.1 V. |
| 6 | −VS | power_in | Negative supply voltage and ground connection. |
| 7 | DISABLE | input | Disable pin for low power mode control; ≥ (−VS + 1.8) V enables amplifier, ≤ (−VS + 1) V disables to 7 µA to 28.5 µA quiescent current. |
| 8 | +IN | input | Positive input summing node; input common-mode voltage range −VS − 0.2 V to +VS − 1.2 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating Range (SOIC package) |  | 3 |  | 6 | V | SOIC package | 5 |
| Operating Temperature Range |  | -40 |  | 125 | °C |  | 5 |
| Supply Voltage |  |  |  | 8 | V |  | 8 |
| Differential Input Voltage |  |  |  | 1.2 | V |  | 8 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 8 |
| Junction Temperature |  |  |  | 150 | °C |  | 8 |
| Lead Temperature (Soldering) |  |  |  | 300 | °C | Soldering, 10 sec | 8 |
| ESD Human Body Model (HBM) |  |  |  | 2000 | V | Human Body Model, rating as printed | 8 |
| ESD Field Induced Charged Device Model (FICDM) |  |  |  | 1250 | V | FICDM, rating as printed | 8 |
| Thermal Resistance θJA (8-Lead SOIC, single) | θJA |  | 158 |  | °C/W | 8-Lead SOIC (Single)/4-Layer Board, still air | 8 |

## CAD (KiCad official)

- Symbol: `ADA4940-1ARZ-R7`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ada4940-1arz-r7-etched.step` / `ada4940-1arz-r7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ada4940-1arz-r7.step` / `ada4940-1arz-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/8588907141733867520) (30 pp, sha256 `6b693320b837e145`, retrieved 2026-09-21, tier: lcsc)
- **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/ada4940-1arz-r7-datasheet.pdf)