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FEATURES 2 s ADC with T/H 4-Channel MUX AD899 Compatible +5 Volt Operation On-Chip Reference 4 s Voltage Output DAC Fast Bus Access Time—75 ns APPLICATIONS Servo Controls Digitally Controlled Calibration Process Control Equipment
A0 A1 VI N A VIN B VI N C VI N D RS INT BUSY ST DGND M U X T/H
8-Bit, 4-Channel Data Acquisition System AD8401
FUNCTIONAL BLOCK DIAGRAM
VDD (+5.0V)
8-BIT ADC 1.25 REF
8-BIT DAC
VOUT
DAC REG CONTROL LOGIC ADC REG
AD8401
RD
CLK
CS
WR
DATA I/O (8 BITS)
AG DAC
AG ADC
GENERAL DESCRIPTION
The AD8401 is a complete data acquisition and control system containing ADC, DAC, 4-channel MUX, and internal voltage reference. Built using CBCMOS, this monolithic circuit offers the user a complete system with very high package density and reliability.