Datasheet Analog Devices AD8450ASTZ

Precision Analog Front End and Controller
for Battery Test/Formation Systems
AD8450 Data Sheet
FEATURES GENERAL DESCRIPTION Integrated constant current and voltage modes with
automatic switchover
Charge and discharge modes
Precision voltage and current measurement
Integrated precision control feedback blocks
Precision interface to PWM or linear power converters
Programmable gain settings
Current sense gains: 26, 66, 133, and 200
Voltage sense gains: 0.2, 0.27, 0.4, and 0.8
Programmable OVP and OCP fault detection
Current sharing and balancing
Excellent ac and dc performance
Maximum offset voltage drift: 0.6 µV/°C
Maximum gain drift: 3 ppm/°C
Low current sense amplifier input voltage noise: ≤9 nV/√Hz
Current sense CMRR: 126 dB minimum (gain = 200)
TTL compliant logic The AD8450 is a precision analog front end and controller for
testing and monitoring battery cells. A precision programmable
gain instrumentation amplifier (PGIA) measures the battery
charge/discharge current, and a programmable gain difference …