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Analog Devices MAX4081FAUA+T — Analog & Data Acquisition

MAX4081FAUA+T Current Sense Amplifier, 150 kHz, 76 V

MPNMAX4081FAUA+T
End of Life

Analog Devices MAX4081FAUA+T, current sense amplifier, single circuit, 150 kHz -3 dB bandwidth, 4.5 V to 76 V supply, 103 µA supply current, 8-uMAX/uSOP package, -40°C to 125°C.

$3.8Ref. price · indicative, final on quote
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX4081FAUA+T specifications
ParameterValue
MountingSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset100 µV
Voltage - supply span4.5 V
Current - supply103µA
Current - input bias5 µA
Operating temperature-40°C ~ 125°C
-3db bandwidth150 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Number of circuits1

Product details

150 kHz bandwidth is enough to resolve switching ripple at typical SMPS frequencies but not full switching edges.

Error budget stacking for a current-sense design

The 100 µV input offset voltage sets the floor on measurable current. The 5 µA input bias current adds a second error term.

Housed in an 8-uMAX/uSOP (3.00 mm width, 0.118" body), surface-mount only.

No last-time-buy risk for new designs. ROHS3 compliant. For BOM freeze or dual-source planning, verify the exact suffix (FAUA+T) for your design.

Frequently asked questions

What is the bandwidth of MAX4081FAUA+T?

The -3 dB bandwidth is 150 kHz, suitable for dc current monitoring and capturing load transients or switching ripple in typical SMPS applications.

What are alternatives to MAX4081FAUA+T?

Within the MAX4081 family, different gain versions (e.g., MAX4081T, MAX4081F) offer varying output scaling factors. For a pin-compatible alternative with a different gain, check the MAX4081TFAUA+T or MAX4081SFAUA+T. Verify the gain option against your shunt and ADC input range.