Product Summary

The MAX4081TAUA is a High-Side, Current-Sense Amplifier with Voltage Output. It extends from 4.5V to 76V making it ideal for telecom, automotive, backplane, and other systems where high-voltage current monitoring is critical. The MAX4081TAUA single output pin continuously monitors the transition from charge to discharge and avoids the need for a separate polarity output. The device requires an external reference to set the zero-current output level (VSENSE = 0V). The applications of the MAX4081TAUA include: Automotive (12V, 24V, or 42V Batteries), 48V Telecom and Backplane Current Measurement, Bidirectional Motor Control, Power-Management Systems, Avalanche Photodiode and PIN-Diode Current Monitoring, General System/Board-Level Current Sensing, Precision High-Voltage Current Sources.

Parametrics

MAX4081TAUA absolute maximum ratings: (1)VCC to GND: -0.3V to +80V; (2)RS+, RS- to GND: -0.3V to +80V; (3)OUT to GND: -0.3V to the lesser of +18V or (VCC + 0.3V); (4)REF1A, REF1B to GND: -0.3V to the lesser of +18V or (VCC + 0.3V); (5)Output Short Circuit to GND: Continuous; (6)Differential Input Voltage (VRS+ - VRS-): ±80V; (7)Current into Any Pin: ±20mA; (8)Continuous Power Dissipation (TA = +70℃) 8-Pin μMAX (derate 4.5mW/℃ above +70℃): 362mW; (9)Operating Temperature Range: -40℃ to +125℃; (10)Junction Temperature: +150℃; (11)Storage Temperature Range: -65℃ to +150℃; (12)Lead Temperature (soldering, 10s): +300℃.

Features

MAX4081TAUA features: (1)Wide 4.5V to 76V Input Common-Mode Range; (2)Bidirectional or Unidirectional ISENSE; (3)Low-Cost, Compact, Current-Sense Solution; (4)Three Gain Versions Available: 20V; (5)±0.1% Full-Scale Accuracy; (6)Low 100μV Input Offset Voltage; (7)Independent Operating Supply Voltage; (8)Reference Input for Bidirectional OUT; (9)Available in a Space-Saving 8-Pin μMAX Package.

Diagrams

MAX4081TAUA diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
MAX4081TAUA
MAX4081TAUA
Maxim Integrated Products
Current Sense Amplifiers 76V High-Side Crnt Sense Amp w/V Out
Data Sheet
0-4150: $0.77
MAX4081TAUA+T
MAX4081TAUA+T
Maxim Integrated Products
Current Sense Amplifiers 76V High-Side Crnt Sense Amp w/V Out
Data Sheet
0-2090: $0.82
2090-2500: $0.82
MAX4081TAUA-T
MAX4081TAUA-T
Maxim Integrated Products
Current Sense Amplifiers 76V High-Side Crnt Sense Amp w/V Out
Data Sheet
0-4170: $0.82
MAX4081TAUA+
MAX4081TAUA+
Maxim Integrated Products
Current Sense Amplifiers 76V High-Side Crnt Sense Amp w/V Out
Data Sheet
0-1: $1.93
1-25: $1.28
25-50: $0.95
50-100: $0.92