Data acquisition front-end IC offers battery management benefits
March 29, 2010 // Paul Buckley
austriamicrosystems has unveiled a high precision data acquisition front-end IC for automotive battery current, voltage, temperature sense applications and in general for sensor interface applications where precise measurement of small signals close to ground is required.
The AS8510 data acquisition front-end IC features two independent analog input channels with 16-bit ADCs, each with individually programmable sampling rates. Each channel has a low-drift programmable gain amplifier for handling +/- 160 mV signals or 0 V to 1 V when by-passing PGA, thus battery currents from the mA range to the kA range can be measured from 100 shunt. A linear sigma delta architecture and wide range of sampling rates allows the AS8510 to provide flexible support of EV (electric vehicle) applications. The offset auto-zero feature (both channels) allows high accuracy measurements with low value shunt resistance (to 100 ) with negligible insertion loss. Also, various operating modes include low power standby with current monitoring for active wake-up. All news
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