®
1. General description
The DAC1401D125 is a dual port, high-speed, 2-channel CMOS Digital-to-Analog
Converter (DAC), optimized for high dynamic performance with low power dissipation.
Supporting an update rate of up to 125 Msps, the DAC1401D125 is suitable for Direct IF
applications.
Separate write inputs allow data to be written to the two DAC ports independently of one
another. Two separate clocks control the update rate of each DAC port.
The DAC1401D125 can interface two separate data ports or one single interleaved
high-speed data port. In Interleaved mode, the input data stream is demultiplexed into its
original I and Q data and latched. The I and Q data is then converted by the two DACs
and updated at half the input data rate.
Each DAC port has a high-impedance differential current output, suitable for both
single-ended and differential analog output configurations.
The DAC1401D125 is pin compatible with the AD9767, DAC2904 and DAC5672.
2. Features and benefits
3. Applications
DAC1401D125
Dual 14-bit DAC, up to 125 Msps
Rev. 03 — 2 July 2012 Product data sheet
Dual 14-bit resolution Typical 185 mW power dissipation
125 Msps update rate 16 mW power-down
Single 3.3 V supply SFDR: 81 dBc; f
o
= 1 MHz; f
s
=52Msps
Dual-port or Interleaved data modes SFDR: 79 dBc; fo = 10.4 MHz;
fs = 78 Msps
1.8 V, 3.3 V and 5 V compatible digital
inputs
SFDR: 75 dBc; f
o
= 1 MHz;
f
s
= 52 Msps; 12 dBFS
Internal and external reference LQFP48 package
2 mA to 20 mA full-scale output current Industrial temperature range of
40 Cto+85C
Quadrature modulation Direct digital frequency synthesis
Medical/test instrumentation Arbitrary waveform generator
Direct IF applications
