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Data acquisition front-end IC offers battery management benefits

March 29, 2010 // Paul Buckley

 Data acquisition front-end IC offers battery management benefits

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.


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The new flexible sensor interface IC, AS8510, offers advantages over alternative solutions, including being the first to feature a 16-bit dual-channel ADC + PGA architecture with less than one LSB of offset and noise. The AS8510 allows systems tailored to individual needs making it well suited for a wide range of present and future battery management applications. The AS8510 in combination with austriamicrosystems System Basis Chip and a micro controller provides an entire battery sensor semiconductor solution for both High-Side or Low-Side at a price below 2.8 US Dollars in volume.

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.
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