# LHAMP189FAA

**Legendsemi** · Instrumentation Amplifiers · SOP-8

LHAMP189FAA from Legendsemi, in a SOP-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 | IN- | input | Negative input of the instrumentation amplifier; input range is (V-) + 0.1 V to (V+) - 1.5 V and it is diode-clamped to the supply rails (limit to 10 mA if beyond rails). |
| 2 | RG | passive | Gain setting pin; for gains greater than 1 place a gain resistor between the two RG pins, G = 1 + (49.4 kΩ / RG). |
| 3 | RG | passive | Gain setting pin; for gains greater than 1 place a gain resistor between the two RG pins, G = 1 + (49.4 kΩ / RG). |
| 4 | IN+ | input | Positive input of the instrumentation amplifier; input range is (V-) + 0.1 V to (V+) - 1.5 V and it is diode-clamped to the supply rails (limit to 10 mA if beyond rails). |
| 5 | V- | power_in | Negative supply; total supply range is 4 V to 36 V single or ±2 V to ±18 V dual. |
| 6 | REF | input | Reference input that must be driven by low impedance or connected to ground, with input impedance of 40 kΩ and a voltage range from V- to V+. |
| 7 | OUT | output | Rail-to-rail output with short-circuit current of ±32 mA and capacitive load drive of 0.1 nF. |
| 8 | V+ | power_in | Positive supply; total supply range is 4 V to 36 V single or ±2 V to ±18 V dual, with 40 V single-supply absolute maximum. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LHAMP189FAA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `lhamp189faa-etched.step` / `lhamp189faa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lhamp189faa.step` / `lhamp189faa.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Legendsemi datasheet](docs/lhamp189faa-datasheet.pdf) (14 pp, sha256 `690ae15d05aed211`, retrieved 2026-10-20, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/lhamp189faa-datasheet.pdf)