DAC2902 Datasheet, PDF (1/22 Pages) Burr-Brown (TI) – Dual, 12-Bit, 125MSPS DIGITAL-TO-ANALOG CONVERTER

DAC2902
DAC2902
www.ti.com
SBAS167C– JUNE 2001 – REVISED SEPTEMBER 2008
Dual, 12-Bit, 125MSPS
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q 125MSPS UPDATE RATE
q SINGLE SUPPLY: +3.3V or +5V
q HIGH SFDR: 70dB at f_OUT = 20MHz
q LOW GLITCH: 2pV-s
q LOW POWER: 310mW
q INTERNAL REFERENCE
q POWER-DOWN MODE: 23mW
APPLICATIONS
q COMMUNICATIONS:
Base Stations, WLL, WLAN
Baseband I/Q Modulation
q MEDICAL/TEST INSTRUMENTATION
q ARBITRARY WAVEFORM GENERATORS (ARB)
q DIRECT DIGITAL SYNTHESIS (DDS)
DESCRIPTION
The DAC2902 is a monolithic, 12-bit, dual-channel,
high-speed Digital-to-Analog Converter (DAC), and is opti-
mized to provide high dynamic performance while dissipat-
ing only 310mW.
Operating with high update rates of up to 125MSPS, the
DAC2902 offers exceptional dynamic performance, and
enables the generation of very high output frequencies
suitable for Direct IF applications. The DAC2902 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 out-
put, suitable for single-ended or differential analog output
configurations.
The DAC2902 combines high dynamic performance with
a high throughput 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 AD9765 dual DAC.
• Gain matching is typically 0.5% of full-scale, and offset
matching is specified at 0.02% max.
• The DAC2902 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 DAC2902 has an internal reference circuit, and
allows use of an external reference.
• The DAC2902 is available in a TQFP-48 package, and
is specified over the extended industrial temperature
range of –40°C to +85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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