# AD8538ARZ

**UMW** · Precision Op Amps · SOP-8

AD8538ARZ from UMW, in a SOP-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 | NC | unconnected | No connect. Leave floating or optionally tie to V- for best noise immunity. |
| 2 | -IN | input | Inverting input of the op-amp. Rail-to-rail input common-mode range extending from V- (0 V) up to V+. Very low input bias current (25 pA typ). |
| 3 | +IN | input | Non-inverting input of the op-amp. Rail-to-rail input common-mode range extending from V- (0 V) up to V+. Very low input bias current (25 pA typ). |
| 4 | V- | power_in | Negative supply rail (or ground in single-supply operation). Supply span V+ to V- is 2.7 V to 5.5 V (or ±1.35 V to ±2.5 V dual). Absolute maximum supply voltage 6 V. |
| 5 | NC | unconnected | No connect. Leave floating. |
| 6 | OUT | output | Op-amp output. Rail-to-rail output stage; short-circuit current ±25 mA typ. Slew rate 0.4 V/µs, GBP 430 kHz. |
| 7 | V+ | power_in | Positive supply rail. Supply span V+ to V- is 2.7 V to 5.5 V (or ±1.35 V to ±2.5 V dual). Absolute maximum supply voltage 6 V. Supply current 180 µA max at 5 V. |
| 8 | NC | unconnected | No connect. Leave floating. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## Ordering variants

Same part, different packaging or reel option.

- `AD8538ARZ`

## CAD (KiCad official)

- Symbol: `AD8538ARZ`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `ad8538arz-etched.step` / `ad8538arz-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad8538arz.step` / `ad8538arz.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604432505332789248) (20 pp, sha256 `422c4e7d28c22d8c`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/ad8538arz-datasheet.pdf)