# SGM8270-2XS8G

**SGMICRO** · Operational Amplifier · SOIC-8

SGM8270-2XS8G from SGMICRO, 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 | OUTA | output | Output of amplifier A; the output swing is specified as 60 mV to 400 mV from the rails at 25°C with RL = 10 kΩ and 2 kΩ respectively at VS = ±18V, and short-circuit current is ±40 mA typical. |
| 2 | -INA | input | Inverting input of amplifier A; the input common-mode range extends from (-VS) - 0.1 V to (+VS) + 0.1 V. |
| 3 | +INA | input | Non-inverting input of amplifier A; the input common-mode range extends from (-VS) - 0.1 V to (+VS) + 0.1 V. |
| 4 | -VS | power_in | Negative power supply (or ground in single-supply operation); the device operates from ±1.65 V to ±18 V dual or 3.3 V to 36 V single supply, with absolute maximum supply voltage of 40 V. |
| 5 | +INB | input | Non-inverting input of amplifier B; the input common-mode range extends from (-VS) - 0.1 V to (+VS) + 0.1 V. |
| 6 | -INB | input | Inverting input of amplifier B; the input common-mode range extends from (-VS) - 0.1 V to (+VS) + 0.1 V. |
| 7 | OUTB | output | Output of amplifier B; the output swing is specified as 60 mV to 400 mV from the rails at 25°C with RL = 10 kΩ and 2 kΩ respectively at VS = ±18V, and short-circuit current is ±40 mA typical. |
| 8 | +VS | power_in | Positive power supply; the device operates from ±1.65 V to ±18 V dual or 3.3 V to 36 V single supply, with absolute maximum supply voltage of 40 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SGMICRO |
| Package | SOIC-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 | VOS |  | 1.2 | 2.8 | mV | VCM = 0V, +25℃ | 3 |
| Input Offset Voltage (Full temperature range) | VOS |  |  | 3 | mV | VCM = 0V, Full (-40℃ to +125℃) | 3 |
| Input Bias Current | IB | -300 | 10 | 300 | pA | VCM = 0V, +25℃ | 3 |
| Input Offset Current | IOS | -300 | 10 | 300 | pA | VCM = 0V, +25℃ | 3 |
| Maximum Input Difference Bias Current | IIIDI |  | 2 | 3 | μA | VS = ±18V, VID = ±18V, +25℃ | 3 |
| Maximum Input Difference Bias Current (Full temperature range) | IIIDI |  |  | 4 | μA | VS = ±18V, VID = ±18V, Full (-40℃ to +125℃) | 3 |
| Common Mode Rejection Ratio | CMRR | 96 | 105 |  | dB | VS = ±18V, (-VS) - 0.1V < VCM < (+VS) -1.5V, +25℃ | 3 |
| Common Mode Rejection Ratio (Full temperature range) | CMRR | 93 |  |  | dB | VS = ±18V, (-VS) - 0.1V < VCM < (+VS) -1.5V, Full (-40℃ to +125℃) | 3 |
| Common Mode Rejection Ratio | CMRR | 76 | 85 |  | dB | VS = ±18V, (-VS) - 0.1V < VCM < (+VS) + 0.1V, +25℃ | 3 |
| Common Mode Rejection Ratio (Full temperature range) | CMRR | 73 |  |  | dB | VS = ±18V, (-VS) - 0.1V < VCM < (+VS) + 0.1V, Full (-40℃ to +125℃) | 3 |
| Open-Loop Voltage Gain | AOL | 103 | 120 |  | dB | (-VS) + 0.2V < VOUT < (+VS) - 0.2V, RL = 10kΩ, +25℃ | 3 |
| Open-Loop Voltage Gain (Full temperature range) | AOL | 100 |  |  | dB | (-VS) + 0.2V < VOUT < (+VS) - 0.2V, RL = 10kΩ, Full (-40℃ to +125℃) | 3 |
| Open-Loop Voltage Gain | AOL | 100 | 120 |  | dB | (-VS) + 0.5V < VOUT < (+VS) - 0.5V, RL = 2kΩ, +25℃ | 3 |
| Open-Loop Voltage Gain (Full temperature range) | AOL | 87 |  |  | dB | (-VS) + 0.5V < VOUT < (+VS) - 0.5V, RL = 2kΩ, Full (-40℃ to +125℃) | 3 |
| Output Voltage Swing from Rail | VOUT |  | 60 | 80 | mV | VS = ±18V, RL = 10kΩ, +25℃ | 3 |
| Output Voltage Swing from Rail (Full temperature range) | VOUT |  |  | 110 | mV | VS = ±18V, RL = 10kΩ, Full (-40℃ to +125℃) | 3 |
| Output Voltage Swing from Rail | VOUT |  | 300 | 400 | mV | VS = ±18V, RL = 2kΩ, +25℃ | 3 |
| Output Voltage Swing from Rail (Full temperature range) | VOUT |  |  | 540 | mV | VS = ±18V, RL = 2kΩ, Full (-40℃ to +125℃) | 3 |
| Output Short-Circuit Current | ISC | -40 | 28 | 40 | mA | VS = ±18V, +25℃ | 3 |
| Operating Voltage Range | VS | 3.3 |  | 36 | V | Full (-40℃ to +125℃) | 3 |
| Quiescent Current | IQ |  | 1 | 1.24 | mA | IOUT = 0, +25℃ | 3 |
| Quiescent Current (Full temperature range) | IQ |  |  | 1.5 | mA | IOUT = 0, Full (-40℃ to +125℃) | 3 |
| Power Supply Rejection Ratio | PSRR | 106 | 120 |  | dB | VS = 3.3V to 36V, +25℃ | 3 |
| Power Supply Rejection Ratio (Full temperature range) | PSRR | 103 |  |  | dB | VS = 3.3V to 36V, Full (-40℃ to +125℃) | 3 |
| Supply Voltage (+VS to -VS) |  |  |  | 40 | V |  | 2 |
| Junction Temperature |  |  |  | 150 | ℃ |  | 2 |
| Storage Temperature Range |  | -65 |  | 150 | ℃ |  | 2 |
| Lead Temperature (Soldering) |  |  |  | 260 | ℃ | Soldering, 10s | 2 |
| ESD Susceptibility MM |  |  |  | 400 | V | MM | 2 |
| Operating Temperature Range |  | -40 |  | 125 | ℃ |  | 2 |

## CAD (KiCad official)

- Symbol: `SGM8270-2XS8G`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `sgm8270-2xs8g-etched.step` / `sgm8270-2xs8g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sgm8270-2xs8g.step` / `sgm8270-2xs8g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SGMICRO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588919926417866752) (11 pp, sha256 `f918540e2c48207d`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/sgm8270-2xs8g-datasheet.pdf)