1FEATURES
2• 125MSPS UPDATE RATE
• SINGLE SUPPLY: +3.3V or +5V
• HIGH SFDR: 78dB at f OUT = 10MHz
• LOW GLITCH: 2pV-s
• LOW POWER: 310mW
• INTERNAL REFERENCE
• POWER-DOWN MODE: 23mW

APPLICATIONS
• COMMUNICATIONS:
– Base Stations, WLL, WLAN
– Baseband I/Q Modulation
• MEDICAL/TEST INSTRUMENTATION
• ARBITRARY WAVEFORM GENERATORS
(ARB)
• DIRECT DIGITAL SYNTHESIS (DDS)

DESCRIPTION
The DAC2904 is a monolithic, 14-bit, dual-channel,
high-speed Digital-to-Analog Converter (DAC), and is
optimized to provide high dynamic performance while
dissipating only 310mW.
Operating with high update rates of up to 125MSPS,
the DAC2904 offers exceptional dynamic
performance, and enables the generation of very-high
output frequencies suitable for “Direct IF”
applications. The DAC2904 has been optimized for
communications applications in which separate I and
Q data are processed while maintaining tight-gain
and offset matching.
Each DAC has a high-impedance differential-current
output, suitable for single-ended or differential
analog-output configurations.
space
The DAC2904 combines high dynamic performance
with a high update rate to create a cost-effective
solution for a wide variety of waveform-synthesis
applications:
• Pin compatibility between family members
provides 10-bit (DAC2900), 12-bit (DAC2902),
and 14-bit (DAC2904) resolution.
• Pin compatible to the AD9767 dual DAC.
• Gain matching is typically 0.5% of full-scale, and
offset matching is specified at 0.02% max.
• The DAC2904 utilizes an advanced CMOS
process; the segmented architecture minimizes
output-glitch energy, and maximizes the dynamic
performance.
• All digital inputs are +3.3V and +5V logic
compatible. The DAC2904 has an internal
reference circuit, and allows use in a multiplying
configuration.
The DAC2904 is available in a TQFP-48 package,
and is specified over the extended industrial
temperature range of –40°C to +85°C.