DAC2904

DAC2904

Dual, 14-Bit, 125MSPS

DIGITAL-TO-ANALOG CONVERTER

1

FEATURES

APPLICATIONS

•

COMMUNICATIONS:

2

•

125MSPS UPDATE RATE

–

Base Stations, WLL, WLAN

•

SINGLE SUPPLY: +3.3V or +5V

–

Baseband I/Q Modulation

•

•

MEDICAL/TEST INSTRUMENTATION

•

LOW GLITCH: 2pV-s

•

ARBITRARY WAVEFORM GENERATORS

•

LOW POWER: 310mW

(ARB)

•

INTERNAL REFERENCE

•

DIRECT DIGITAL SYNTHESIS (DDS)

•

POWER-DOWN MODE: 23mW

space

space

The DAC2904 combines high dynamic performance

with a high update rate to create a cost-effective

DESCRIPTION

solution for a wide variety of waveform-synthesis

The DAC2904 is a monolithic, 14-bit, dual-channel,

applications:

high-speed Digital-to-Analog Converter (DAC), and is

•

Pin compatibility between family members

optimized to provide high dynamic performance while

provides 10-bit (DAC2900), 12-bit (DAC2902),

dissipating only 310mW.

and 14-bit (DAC2904) resolution.

Operating with high update rates of up to 125MSPS,

•

Pin compatible to the AD9767 dual DAC.

the

DAC2904

offers

exceptional

dynamic

•

Gain matching is typically 0.5% of full-scale, and

performance, and enables the generation of very-high

offset matching is specified at 0.02% max.

output

frequencies

suitable

for

“Direct

IF”

•

The DAC2904 utilizes an advanced CMOS

applications. The DAC2904 has been optimized for

process; the segmented architecture minimizes

communications applications in which separate I and

output-glitch energy, and maximizes the dynamic

Q data are processed while maintaining tight-gain

performance.

and offset matching.

•

All digital inputs are +3.3V and +5V logic

Each DAC has a high-impedance differential-current

compatible. The DAC2904 has an internal

output,

suitable

for

single-ended

or

differential

reference circuit, and allows use in a multiplying

analog-output configurations.

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.

1

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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2001–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.