General Description
The AA88347 is a CMOS processed digital to analog converter (DAC) with 8-bit resolution, low leakage
current and low operating current. The AA88347 has 8 channels with build in operational amplifier
output buffers which could operate in the full-swing voltage range from VCC to GND and enhance the
Drive/Sink ability up to max. 1mA. Digital data (DI) input serially in a max. 2.5 MHz clock (CLK) rate.
The latched 12-bit digital data is converted into an analog DC voltage in the range from VSS to VDD with
8-bit resolution in one of the eight channels by the D/A converter in a max. 100μs settling time.
Features
．12 bits serial data input(3 wire serial data transfer method, DI, CLK, LD)
．R-2R resistor ladder used for D/A conversion
．8 channels with 8-bit resolution monotonic D/A converted
．8 channel buffer operational amplifiers operating in the full voltage range from VCC to GND only if VDD=VCC
--and VSS=GND
．Max. 2.5 MHz serial digital data input
．Serial I/O for cascade application
．Max. 1.0 mA output drive/sink current
．Two separate power supply/ground lines for system and analog power supply
．Single +5 V system power supply
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