# MAX4080FAUA+T

**Maxim Integrated** · Operational Amplifier · MSOP-8

MAX4080FAUA+T from Maxim Integrated, 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 | RS+ | input | Power connection to the external-sense resistor, with a 4.5V to 76V input common-mode range. |
| 2 | VCC | power_in | Supply voltage input operating from 4.5V to 76V; decouple VCC to GND with at least a 0.1µF capacitor to bypass line transients. |
| 3 | N.C. | unconnected | No connection; no internal connection, so leave open or connect to ground. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | OUT | output | Voltage output that is proportional to VSENSE for the unidirectional MAX4080; output is clamped to not exceed 18V and must not exceed the lesser of 18V or (VCC + 0.3V). |
| 6 | N.C. | unconnected | No connection; no internal connection, so leave open or connect to ground. |
| 7 | N.C. | unconnected | No connection; no internal connection, so leave open or connect to ground. |
| 8 | RS- | input | Load connection to the external sense resistor, with RS+ to RS- differential input limited to ±80V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Maxim Integrated |
| Package | MSOP-8 |
| Category | Amplifiers |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating Voltage Range | VCC | 4.5 |  | 76 | V | Inferred from PSRR test | 2 |
| Common-Mode Range | CMVR | 4.5 |  | 76 | V | Inferred from CMRR test (Note 3) | 2 |
| Supply Current (MAX4080) | ICC |  | 75 | 190 | µA | VCC = VRS+ = 76V, no load | 2 |
| Leakage Current | IRS+, IRS- |  | 0.01 | 2 | µA | VCC = 0V, VRS+ = 76V | 2 |
| Input Bias Current | IRS+, IRS- |  | 5 | 12 | µA | VCC = VRS+ = 76V | 2 |
| Full-Scale Sense Voltage (MAX4080F) | VSENSE | -1000 | 1000 | 1000 | mV | MAX4080F/MAX4081F; printed as ±1000 | 2 |
| Gain | AV |  | 5 |  | V/V | MAX4080F/MAX4081F | 2 |
| Gain Accuracy | DAV | -0.6 | 0.1 | 0.6 | % | VCC = VRS+ = 48V; TA = +25°C (Note 5) | 2 |
| Gain Accuracy | DAV | -1 |  | 1 | % | VCC = VRS+ = 48V; TA = -40°C to +85°C (Note 5) | 2 |
| Gain Accuracy | DAV | -1.2 |  | 1.2 | % | VCC = VRS+ = 48V; TA = TMIN to TMAX (Note 5) | 2 |
| Input Offset Voltage | VOS | -0.6 | 0.1 | 0.6 | mV | VCC = VRS+ = 48V; TA = +25°C (Note 6) | 2 |
| Input Offset Voltage | VOS | -1 |  | 1 | mV | VCC = VRS+ = 48V; TA = -40°C to +85°C (Note 6) | 2 |
| Input Offset Voltage | VOS | -1.2 |  | 1.2 | mV | VCC = VRS+ = 48V; TA = TMIN to TMAX (Note 6) | 2 |
| Common-Mode Rejection Ratio | CMRR | 100 | 124 |  | dB | VCC = 48V, VRS+ = 4.5V to 76V (Note 7) | 2 |
| Power-Supply Rejection Ratio | PSRR | 100 | 122 |  | dB | VRS+ = 48V, VCC = 4.5V to 76V (Note 7) | 2 |
| OUT High Voltage (VCC - VOH) | VOH |  | 0.15 | 0.27 | V | VCC = 4.5V, VRS+ = 48V, VREF1A = VREF1B = 2.5V, IOUT (sourcing) = +500µA (Note 8); MAX4080F with VSENSE = 1000mV | 2 |
| OUT Low Voltage | VOL |  | 4 | 15 | mV | VCC = VRS+ = 48V, VREF1A = VREF1B = 2.5V; IOUT (sinking) = 10µA | 3 |
| OUT Low Voltage | VOL |  | 23 | 55 | mV | VCC = VRS+ = 48V, VREF1A = VREF1B = 2.5V; IOUT (sinking) = 100µA | 3 |
| Bandwidth (MAX4080F/T/S) | BW |  | 250 |  | kHz | VCC = VRS+ = 48V, VOUT = 2.5V | 4 |
| OUT Settling Time to 1% of Final Value |  |  | 20 |  | µs | VSENSE = 10mV to 100mV | 4 |
| Capacitive-Load Stability |  |  | 500 |  | pF | No sustained oscillations | 4 |
| Output Resistance | ROUT |  | 0.1 |  | W | VSENSE = 100mV | 4 |
| Power-Up Time |  |  | 50 |  | µs | VCC = VRS+ = 48V, VSENSE = 100mV (Note 9) | 4 |
| Saturation Recovery Time |  |  | 50 |  | µs | Notes 9, 10 | 4 |
| Supply Voltage VCC to GND | VCC | -0.3 |  | 80 | V |  | 2 |
| RS+, RS- to GND | VRS+, VRS- | -0.3 |  | 80 | V |  | 2 |
| OUT to GND | VOUT | -0.3 |  | 18 | V | Upper limit is the lesser of +18V or (VCC + 0.3V) | 2 |
| Differential Input Voltage (VRS+ - VRS-) |  | -80 |  | 80 | V |  | 2 |
| Current into Any Pin |  | -20 |  | 20 | mA |  | 2 |
| Operating Temperature Range | TA | -40 |  | 125 | °C |  | 2 |
| Junction Temperature | TJ |  |  | 150 | °C |  | 2 |
| Storage Temperature Range | TSTG | -65 |  | 150 | °C |  | 2 |
| Lead Temperature (soldering) |  |  |  | 300 | °C | Soldering, 10s | 2 |
| Soldering Temperature (reflow) |  |  |  | 260 | °C | Reflow | 2 |

## CAD (KiCad official)

- Symbol: `MAX4080FAUA+T`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `max4080faua-t-etched.step` / `max4080faua-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max4080faua-t.step` / `max4080faua-t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Maxim Integrated datasheet](https://www.analog.com/media/en/technical-documentation/data-sheets/max4080-max4081.pdf) (14 pp, sha256 `1cd392785b0f1571`, retrieved 2026-10-28, 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/max4080faua-t-datasheet.pdf)