# MCP6142-I

**Microchip Tech** · Operational Amplifier · MSOP-8

MCP6142-I from Microchip Tech, in a MSOP-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 | VOUTA | output | Analog output of op amp A, which is a low-impedance voltage source. |
| 2 | VINA- | input | Inverting input of op amp A, a high-impedance CMOS input with low bias current. |
| 3 | VINA+ | input | Non-inverting input of op amp A, a high-impedance CMOS input with low bias current. |
| 4 | VSS | power_in | Negative power supply; in single-supply use it is connected to ground, and VDD must stay 1.4V to 6.0V above it. |
| 5 | VINB+ | input | Non-inverting input of op amp B, a high-impedance CMOS input with low bias current. |
| 6 | VINB- | input | Inverting input of op amp B, a high-impedance CMOS input with low bias current. |
| 7 | VOUTB | output | Analog output of op amp B, which is a low-impedance voltage source. |
| 8 | VDD | power_in | Positive power supply, 1.4V to 6.0V higher than VSS; VDD needs bypass capacitors. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | MSOP-8 |
| Category | Operational Amplifier/Comparator |
| 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 | -3 |  | 3 | mV | VCM = VSS | 3 |
| Power Supply Rejection | PSRR | 70 | 85 |  | dB | VCM = VSS | 3 |
| Input Bias Current, Industrial Temperature | IB |  | 20 | 100 | pA | TA = +85° | 3 |
| Common-mode Rejection Ratio | CMRR | 62 | 80 |  | dB | VDD = 5V, VCM = -0.3V to 5.3V | 3 |
| Common-mode Rejection Ratio | CMRR | 60 | 75 |  | dB | VDD = 5V, VCM = 2.5V to 5.3V | 3 |
| Common-mode Rejection Ratio | CMRR | 60 | 80 |  | dB | VDD = 5V, VCM = -0.3V to 2.5V | 3 |
| DC Open-Loop Gain (large signal) | AOL | 95 | 115 |  | dB | RL = 50 k to VL, VOUT = 0.1V to VDD0.1V | 3 |
| Supply Voltage | VDD | 1.4 |  | 6 | V | Note 1 | 3 |
| Quiescent Current per Amplifier | IQ | 0.3 | 0.6 | 1 | µA | IO = 0 | 3 |
| Specified Temperature Range (Industrial) | TA | -40 |  | 85 | °C | Industrial Temperature parts | 5 |
| Operating Temperature Range | TA | -40 |  | 125 | °C | Note 1 | 5 |
| Storage Temperature Range | TA | -65 |  | 150 | °C |  | 5 |
| Current at Analog Input Pins |  | -2 |  | 2 | mA |  | 3 |
| Current at Output and Supply Pins |  | -30 |  | 30 | mA |  | 3 |
| Maximum Junction Temperature | TJ |  |  | 150 | °C |  | 3 |
| Thermal Resistance, 8L-MSOP | JA |  | 206 |  | °C/W |  | 5 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | 8-Lead Plastic Small Outline (SN) - Narrow, 3.90 mm (.150 In.) Body [SOIC] A A2 | 38 |

## CAD (KiCad official)

- Symbol: `MCP6142-I`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `mcp6142-i-etched.step` / `mcp6142-i-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mcp6142-i.step` / `mcp6142-i.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/mcp6142-i-datasheet.pdf) (52 pp, sha256 `ff8ac139a7fd75dd`, retrieved 2026-11-05, tier: manufacturer)
- **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/mcp6142-i-datasheet.pdf)