High-side current sense amp with wide common-mode voltage for battery and industrial current monitoring
Specifications
Manufacturer:
Analog Devices Inc./Maxim Integrated
Product Number:
MAX9650ATA+T
Description:
IC AMP TFT-LCD 8TDFN
Introduction
High-side current sense amp with wide common-mode voltage for battery and industrial current monitoring
Core Functions
- High-side current sense amplifier with integrated precision voltage reference, optimized for low-voltage industrial, portable and battery-powered systems
- Wide input common-mode voltage range from 1.8V to 76V, enabling current monitoring on high-voltage power rails without external level shifting circuits
- Fixed internal gain options (20V/V, 50V/V, 100V/V) eliminate external gain-setting resistors, reducing PCB layout complexity and component error drift
- Low input offset voltage (maximum 150μV) and low input bias current deliver accurate small-current measurement under low shunt resistance
- Built-in 2.5V precision reference output can supply reference voltage to ADCs, comparators and other analog peripherals, saving extra reference ICs
- Low quiescent current (only 120μA typical) minimizes power consumption for battery-operated devices
- Single-supply operation from 2.7V to 5.5V, compatible with standard 3.3V/5V digital control circuits
- Overcurrent detection capability: the reference voltage can be matched with an external comparator to trigger fault signals for overload protection
Typical Applications
- Battery-powered consumer electronics: lithium battery discharge/charge current monitoring
- Industrial low-voltage power supplies, DC-DC converter output current detection
- Motor drive modules, small DC motor stall and overcurrent protection
- Portable medical instruments, handheld test measuring equipment
- Server auxiliary power, hot-plug power supply current monitoring
- Smart home devices, power adapter load current measurement
- Automotive low-voltage auxiliary circuit current sensing (non-high-voltage automotive systems)
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