# OP27EN

**HGSEMI** · Precision Op Amps · DIP-8

OP27EN from HGSEMI, in a DIP-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 | Input offset voltage trim terminal (Offset Null) connected to one end of a 20kΩ trim potentiometer whose wiper goes to Vcc+. |
| 2 | -IN | input | Inverting input of the operational amplifier, with input voltage range of ±13V and absolute maximum input voltage of ±18V. |
| 3 | +IN | input | Non-inverting input of the operational amplifier, with input voltage range of ±13V and absolute maximum input voltage of ±18V. |
| 4 | V- | power_in | Negative supply voltage pin, operating range ±3V to ±18V supply with absolute maximum of ±18V. |
| 5 | NC | unconnected | No connect; not internally connected. |
| 6 | OUT | output | Amplifier output, with typical peak swing of ±12V into 10kΩ and ±11.5V into 2kΩ at Vcc=±15V. |
| 7 | V+ | power_in | Positive supply voltage pin, operating range ±3V to ±18V supply with absolute maximum of ±18V; also the trim potentiometer wiper connection. |
| 8 | VOS TRIM | passive | Input offset voltage trim terminal (Offset Null) connected to the other end of the 20kΩ trim potentiometer whose wiper goes to Vcc+. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | DIP-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 |  | 3 |
| Input voltage noise density, fo=10 Hz | en |  | 3.5 | 5.5 | nV/√Hz | fo=10 Hz | 3 |
| Input voltage noise density, fo=30 Hz | en |  | 3.1 | 4.5 | nV/√Hz | fo=30 Hz | 3 |
| Input voltage noise density, fo=1000 Hz | en |  | 3 | 3.8 | nV/√Hz | fo=1000 Hz | 3 |
| Input current noise density, fo=10 Hz | in |  | 1.7 | 4 | pA/√Hz | fo=10 Hz | 3 |
| Input current noise density, fo=30 Hz | in |  | 1 | 2.3 | pA/√Hz | fo=30 Hz | 3 |
| Input current noise density, fo=1000 Hz | in |  | 0.4 | 0.6 | pA/√Hz | fo=1000 Hz | 3 |
| Input common-mode voltage range | Vicm | -13 |  | 13 | V | 0℃<Tamb<70℃ | 3 |
| Output peak voltage, RL=10kΩ | Vopp | -12 |  | 12 | V | RL = 10kΩ | 3 |
| Output peak voltage, RL=2kΩ | Vopp | -11.5 |  | 11.5 | V | RL = 2kΩ | 3 |
| Gain bandwidth product | GBP |  | 5 | 8 | MHz | RL=2kΩ,CL=100pF,f=100KHz | 3 |
| Power supply current | ICC |  | 3.8 | 6 | mA | no load | 3 |
| Supply voltage | Vcc | -18 |  | 18 | V |  | 3 |
| Input voltage | Vi | -18 |  | 18 | V |  | 3 |
| Differential input voltage | Vid | -30 |  | 30 | V |  | 3 |
| Operating temperature, OP27E | TOPR | 0 |  | 70 | ℃ | OP27E | 3 |
| Storage temperature | TSTG | -40 |  | 150 | ℃ |  | 3 |
| Lead temperature (soldering) | TLEAD |  |  | 260 | ℃ | soldering 10s | 3 |
| 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 |
| Supply voltage rejection ratio | SVR |  | 90 |  | dB |  | 3 |
| Large signal voltage gain | Avd |  | 100 |  | V/mV | VCC=±15V,RL=2kΩ, VO=±10V | 3 |

## CAD (KiCad official)

- Symbol: `OP27EN`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files: `op27en-etched.step` / `op27en-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `op27en.step` / `op27en.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HGSEMI datasheet](docs/op27en-datasheet.pdf) (8 pp, sha256 `cd87a3464a5ffe92`, retrieved 2026-10-18, 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/op27en-datasheet.pdf)