# CSA231NASOIC8

**analogysemi** · Current Sense Amplifiers · SOIC-8

CSA231NASOIC8 from analogysemi, 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 | RS- | input | External resistor load-side connection; the sense input for the load side of RSENSE, with VRS+ and VRS- limited to 0 V to 76 V to GND and VRS+ - VRS- limited to ±1 V. |
| 2 | GND | power_in | Power ground, the device ground reference; the VDD supply is specified from 2.7 V to 5.5 V relative to GND. |
| 3 | REF2 | input | Reference voltage input 2, typically connected to GND; the VREF input range is GND to VDD. |
| 4 | NC | unconnected | Do not connect. |
| 5 | OUT | output | Output, which equals 1/2 (REF1 + REF2) at zero sense voltage; the output is high-Z during power-up. |
| 6 | VDD | power_in | Supply voltage, with at least a 100nF capacitor connected to GND; the supply range is 2.7 V to 5.5 V. |
| 7 | REF1 | input | Reference voltage input 1, typically connected to VDD; the VREF input range is GND to VDD. |
| 8 | RS+ | input | External resistor power-side connection; the sense input for the supply side of RSENSE, with VRS+ and VRS- limited to 0 V to 76 V to GND. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `CSA231NASOIC8`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `csa231nasoic8-etched.step` / `csa231nasoic8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `csa231nasoic8.step` / `csa231nasoic8.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [analogysemi datasheet](docs/csa231nasoic8-datasheet.pdf) (18 pp, sha256 `b25417d92b02a132`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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/csa231nasoic8-datasheet.pdf)