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AD8450 Datasheet Precision Analog Front End And Controller

Manufacturer: Analog Devices

Overview: Data Sheet Precision Analog Front End and Controller for Battery Test/Formation Systems.

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 pliant 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 amplifier (PGDA) measures the battery voltage (see Figure 1).

Internal laser trimmed resistor networks set the gains for the PGIA and the PGDA, optimizing the performance of the AD8450 over the rated temperature range.

More Datasheets from Analog Devices

Part Number Description
AD845 CBFET Op Amp
AD8451 Precision Analog Front End and Controller
AD8452 Precision Integrated Analog Front End / Controller and PWM
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AD8400 1-/2-/4-Channel Digital Potentiometers
AD8401 8-Bit/ 4-Channel Data Acquisition System
AD8402 2-Channel/ 256-Position Digital Potentiometer
AD8403 2-Channel/ 256-Position Digital Potentiometer
AD841 Fast Settling Op Amp
AD8410 Current Sense Amplifier

AD8450 Distributor