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Dual 8-,10-,12-Bit High Bandwidth Multiplying DACs with Serial Interface AD5429/AD5439/AD5449
FEATURES
10 MHz multiplying bandwidth 50 MHz serial interface 2.5 V to 5.5 V supply operation ±10 V reference input Pin compatible 8-, 10-, and 12-bit DACs Extended temperature range: −40°C to +125°C 16-lead TSSOP package Guaranteed monotonic Power-on reset Daisy-chain mode Readback function 0.5 µA typical current consumption
FUNCTIONAL BLOCK DIAGRAM
VREFA
AD5429/AD5439/AD5449
VDD SYNC SCLK SDIN SDO CLR INPUT REGISTER LDAC DAC REGISTER SHIFT REGISTER INPUT REGISTER DAC REGISTER 8-/10-/12-BIT R-2R DAC A
RFB R RFBA IOUT1A IOUT2A
POWER-ON RESET
8-/10-/12-BIT R-2R DAC B
IOUT1B IOUT2B RFBB
04464-0-001
RFB R LDAC VREFB
Figure 1.