Data acquisition front-end offers zero offset

Data acquisition front-end offers zero offset

Suited for automotive battery current, voltage, and temperature-sense applications, as well as general sensor interface applications, the AS8510 data acquisition front-end IC is a virtually offset-free low-noise device and 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 to 1 V when bypassing the PGA, thus battery currents from the mA range to the kA range can be measured from a 100-μΩ shunt.

The part operates with a current shunt sensor in a 12-V system either at a battery’s ground terminal or at the plus terminal in conjunction with a dedicated level shift companion IC, or it can be used as a general-purpose sensor interface for precise measurement of signals close to ground. Fully differential inputs allow the chip to capture differential signals with 300 mV of common mode above ground and 160 mV below ground. Housed in an SSOP20 package, the AS8510 draws just 40 µA in standby mode, operates from a 3.3-V supply, and has an ambient operating temperature range of –40° to 125°C. (Contact company for pricing — available now.)

austriamicrosystems , Unetrremstaetten , Austria
Manfred Brandl 43-0-31-36-500-5336
http://www.austriamicrosystems.com