Datasheet Summary
a
Features
Dynamic Range: 88.5 dB Resolution: 0.375 dB On-Chip Data Latches for Both DACs Four-Quadrant Multiplication +5 V Operation Pin patible with AD7528 Low Power APPLICATIONS Audio Attenuators Sonar Systems Function Generators
LC2MOS LOGDAC Dual Logarithmic D/A Converter AD7112-
FUNCTIONAL BLOCK DIAGRAM
VDD VIN A RFB A OUT A
17-BIT DAC A
17-BIT LATCH DB0 DB7 8-BIT BUFFER DECODE LOGIC 17 17-BIT LATCH RFB B CONTROL LOGIC OUT B 17-BIT DAC B
GENERAL DESCRIPTION
DAC A/ CS WR VIN B DAC B
DGND
AGND
The LOGDAC® AD7112 is a monolithic dual multiplying D/A converter featuring wide dynamic range and excellent DAC-toDAC matching. Both DACs can attenuate an analog input signal...