Analog Devices MAX4081FASA+ current sense amplifier, single circuit, 150 kHz bandwidth, 4.5 V to 76 V supply, 103 µA supply current, 8-SOIC package, -40°C to 125°C.
| Parameter | Value |
|---|---|
| Mounting type | Surface Mount |
| Amplifier type | Current Sense |
| Voltage - input offset | 100 µV |
| Voltage - supply span | 4.5 V |
| Current - supply | 103µA |
| Current - input bias | 5 µA |
| Operating temperature | -40°C ~ 125°C |
| -3db bandwidth | 150 kHz |
| Package | Tube |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Number of circuits | 1 |
The Analog Devices MAX4081FASA+ is a single-channel current sense amplifier in an 8-SOIC package. It monitors current by sensing the voltage across a shunt resistor on the high side, with a supply span from 4.5 V up to 76 V.
The 8-SOIC (0.154", 3.90 mm width) surface-mount package is a standard footprint shared across many current-sense amplifiers. The supplier device package is also 8-SOIC.
The MAX4081 family includes multiple gain-option variants in the same 8-SOIC footprint. The closest pin-compatible alternative within the family shares the same supply range and bandwidth but differs in the internal gain setting — verify the gain resistor configuration in your design before substituting.
This part is designed as a high-side current sense amplifier. The input common-mode range extends down to ground, but the output is referenced to the supply — for true low-side sensing with a ground-referenced output, a different topology is typically preferred. Confirm the common-mode range against your shunt voltage before using it in a low-side configuration.