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Analog Devices MAX4377FEUA — Logic ICs
Analog Devices

MAX4377FEUA Current Sense Amplifier, Dual, 2 MHz, 10V/µs

MPNMAX4377FEUA
End of Life

Maxim Integrated MAX4377FEUA, dual current-sense amplifier, 2 MHz -3dB bandwidth, 10V/µs slew rate, 3 V to 28 V supply, 1 mA per channel, -40 to 125 °C, 8-µMAX package.

$1.07Ref. price · indicative, final on quote
MAX4377FEUA datasheet
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
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MOQ1 pcs
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Specifications

MAX4377FEUA Technical Specifications
ParameterValue
Mounting typeSurface Mount
Amplifier typeCurrent Sense
Voltage - supply span28 V
Current - supply1mA (x2 Channels)
Current - input bias120 µA
Operating temperature-40°C ~ 125°C
-3db bandwidth2 MHz
PackageBulk
Slew rate10V/µs
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Number of circuits2

Product details

Dual current-sense amp for rail monitoring

The Maxim Integrated MAX4377FEUA is a dual-channel current-sense amplifier in an 8-µMAX package (8-TSSOP/MSOP footprint). The two channels let you monitor independent rails — say a 5 V logic rail and a 12 V motor supply — with a single IC, saving board space over two single-channel parts.

Rated for a supply span of 3 V to 28 V, the MAX4377FEUA runs directly off a 5 V or 12 V rail without an extra LDO. If your design sees sustained ambient above 85 °C, this part keeps working where a commercial-grade amp would drift or fail.

Bandwidth and slew rate — fast enough for switching-load transients

A 2 MHz -3 dB bandwidth and 10 V/µs slew rate let the amplifier track fast current changes from switching converters and motor drives. For a typical 500 kHz buck converter, the loop can resolve the inductor current ripple without significant phase lag. The 1 mA per-channel supply current keeps the quiescent draw low enough for always-on monitoring in battery-backed systems.

Frequently asked questions

Is MAX4377FEUA compatible with a 5 V supply?

Yes. The supply voltage range is 3 V to 28 V, so a 5 V rail is well within the operating window. No external regulator is needed.

Does MAX4377FEUA have a shutdown pin?

The evidence does not list a shutdown pin. The device draws 1 mA per channel continuously when powered. If you need a low-power standby mode, consider adding a series FET or a load switch on the supply rail.

What is the equivalent of MAX4377FEUA?

Within the same function class, the MAX4377 family includes single-channel variants (MAX4376) and other gain options. For a pin-compatible dual-channel current-sense amp, the MAX4378 is a sibling with a different gain set. Verify the gain and bandwidth match your shunt and load range before substituting.