# OP177FM

**HGSEMI** · Operational Amplifier · SOP-8

OP177FM from HGSEMI, 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 | VOS TRIM | passive | Offset null (input offset voltage trim) terminal, connected to one end of a 20kΩ trim potentiometer whose wiper goes to Vcc+. |
| 2 | -IN | input | Inverting input; absolute maximum input voltage ±18 V and differential input voltage ±30 V. |
| 3 | +IN | input | Non-inverting input; absolute maximum input voltage ±18 V and differential input voltage ±30 V. |
| 4 | V- | power_in | Negative supply; operating supply range ±3V to ±18V, absolute maximum ±18 V. |
| 5 | NC | unconnected | No connect; not internally connected. |
| 6 | OUT | output | Amplifier output; typical peak output swing ±12 V into 10kΩ and ±11.5 V into 2kΩ at Vcc=±15V. |
| 7 | V+ | power_in | Positive supply; operating supply range ±3V to ±18V, absolute maximum ±18 V. |
| 8 | VOS TRIM | passive | Offset null (input offset voltage trim) terminal, connected to the other end of the 20kΩ trim potentiometer whose wiper goes to Vcc+. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-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 |
|---|---|---|---|---|---|---|---|
| Input offset voltage | Vio |  | 10 | 25 | uV | Vcc=±15V, Tamb=25℃ (table header) | 3 |
| Common-mode input voltage range | Vicm | -13 | 13 | 13.5 | V | 0℃<Tamb<70℃ | 3 |
| Output peak voltage | Vopp | -12 |  | 12 | V | RL = 10kΩ | 3 |
| Output peak voltage | Vopp | -11.5 |  | 11.5 | V | RL = 2kΩ | 3 |
| Supply voltage (absolute maximum) | Vcc | -18 |  | 18 | V |  | 3 |
| Input voltage (absolute maximum) | Vi | -18 |  | 18 | V |  | 3 |
| Input differential voltage (absolute maximum) | Vid | -30 |  | 30 | V |  | 3 |
| Operating temperature | TOPR | -40 |  | 85 | ℃ |  | 3 |
| Storage temperature | TSTG | -40 |  | 150 | ℃ |  | 3 |
| Lead temperature (soldering 10 s) | TLEAD |  |  | 245 | ℃ | 10 s soldering | 3 |
| Supply voltage operating range |  | 3 |  | 18 | V | Dual supply ±3V to ±18V (features list) | 1 |
| Input offset voltage drift | DVio |  | 1.8 |  | uV/℃ |  | 3 |
| Input offset current | Iio |  | 8 |  | nA |  | 3 |
| Input bias current | Iib |  | 28 |  | nA |  | 3 |
| Common-mode rejection ratio | CMR |  | 100 |  | dB |  | 3 |
| Power supply rejection ratio | SVR |  | 90 |  | dB |  | 3 |
| Large signal voltage gain | Avd |  | 100 |  | V/mV | VCC=±15V, RL=2kΩ, VO=±10V | 3 |
| Gain bandwidth product | GBP |  | 0.5 |  | MHz | RL = 2kΩ, CL = 100pF, f = 100kHz | 3 |

## CAD (KiCad official)

- Symbol: `OP177FM`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `op177fm-etched.step` / `op177fm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `op177fm.step` / `op177fm.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603394177925328896) (8 pp, sha256 `09768a7967c8af21`, retrieved 2026-10-19, 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 0.3`, 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/op177fm-datasheet.pdf)