ams AS8515
The AS8515 is designed for simultaneous measurement of shunt current sensor signal and battery voltage by two independent ADC channels. Both channels can measure small signals up to ±219 mV versus ground through programmable gain amplifier or larger signals in the 1V range without amplifier. The device is powered directly from the battery through LDO and provides a 3.3V supply for an external microcontroller.APPLICATIONS
1GENERAL DESCRIPTION
After analog to digital conversion and digital filtering, the resulting digital values are accessible through 4-wire serial interface. For communication with the next level ECU, the device offers a LIN 2.1 transceiver. Measurement of battery voltage is supported through resistive attenuator with disable for power saving in standby. The device is a stacked die system providing a high voltage CMOS IC for power management and transceiver functions as a Top die and low voltage sensor interface functions as a Bottom die inside a 32-pin MLF (5x5 mm) package.●Internal temperature sensor
●Synchronous acquisition for both ADC channels
●Reference-voltage source (high precision and high stability)
●Offset auto zero architecture on both channels
●Current monitoring comparator with interrupt signal generation and µC clock enable. Timer with 2 related outputs for single shot sampling of current and voltage channel in low power mode.
●Precision on chip RC oscillator or external clock.