Battery Sensing www.ams.com/AS8510 AS8510 – 2-Channel data acquisition device We provide innovative analog solutions to -2 independent and matched acquisition channels -Programmable gain amplifiers, 16 bit ADCs the most challenging applications in sensor -Trimmed precision reference and sensor interfaces, -Offset free system, active compensation power management, and wireless. -Small SSOP-20 package General Description The AS8510 is designed for synchronous measurement of two independent signals through separate ADC channels. Both channels are matched and can either measure small signals up to ±160 mV versus ground through programmable gain amplifier or larger signals in the 0 to 1V range without amplifier. After analog to digital conversion and digital filtering, the resulting digital values are accessible through 4 wire serial interface. Specifications Features Operating Supply Range [V] 3.0 to 3.6 Non-operating Supply Range[V] -0.3 to 5 Operating Temperature [°C] -40 to 125 Ambient Typical standby quiescent current in standby mode [µA] 40 Programmable ADC Sampling rate [Hz] <1-8000 Reference voltage [V] 1.22 PGA max. settling time [µs] 45 PGA gains 5, 25, 40, 100 PGA common mode input range vs. AVSS [mV] -160 / +200 RC Oscillator frequency [MHz] 4,096 - 3.3 V supply voltage - Two independent, fully differential, high resolution 16 bit ADCs with programmable oversampling ratio - Precision low noise, low drift programmable gain amplifiers - Offset auto zero architecture on both channels - RC oscillators for normal and standby mode - Internal temperature sensor - Precision on chip reference - Optional digital 300 Hz low pass filters for both channels - Normal and standby operating modes - 4 wire micro controller interface - Low power monitoring mode with wake up - Programmable current source for input terminals - Unique chip ID for traceability - SSOP-20 package AS8510 Block Diagram REF AVDD DVDD 1.22V Preference Internal Temp Oscillators ETR ETS MUX and chopper VBAT_IN 16 bit converter PGA VBAT_GND MEN Decimators, FIR filters, state machine AS8510 RSHH CHOP_CLK INT CLK Chopper RSHL PGA 16 bit converter 1.65v analog ground AVSS AGND Serial interface/control registers SCLK CS SDI SDO DVSS www.ams.com [email protected] © 06/2012 by ams Subject to change without notice Headquarters ams AG Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria Phone +43 3136 500-0 · Fax +43 3136 525-01 Sales Offices Worldwide [email protected] [email protected] [email protected]