GENERAL DESCRIPTIONTM87A12 is CMOS 12-bit SAR A/D converter, comparator and 4 individual
operation amplifiers (input Rail to Rail). A serial control interface is easy to
communicate with MCU.
FEATURES*3-pins Serial control interface is easy to communicate with MCU.
*Operates ratio metrically or with 5 Vdc or analog span adjusted voltage
reference.
*8-channel multiplexer with address logic.
*0V to VDD input range with single 2.2V ~ 5V power supply.
*4 independent input Rail to Rail operation amplifier.
KEY SPECIFICATION
*Resolution 12 Bits
*Total Unadjusted Error ±6 LSB
*Single Supply 2.2V ~ 5V
*A/D Conversion Time 48.5us
*Comparison Time 26.5us