DAC904 Datasheet, PDF (1/23 Pages) Burr-Brown (TI) – 14-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER

DAC904
DAC904
DAC904
SBAS095C – MAY 2002
14-Bit, 165MSPS
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q SINGLE +5V OR +3V OPERATION
q HIGH SFDR: 20MHz Output at 100MSPS: 64dBc
q LOW GLITCH: 3pV-s
q LOW POWER: 170mW at +5V
q INTERNAL REFERENCE:
Optional Ext. Reference
Adjustable Full-Scale Range
Multiplying Option
APPLICATIONS
q COMMUNICATION TRANSMIT CHANNELS
WLL, Cellular Base Station
Digital Microwave Links
Cable Modems
q WAVEFORM GENERATION
Direct Digital Synthesis (DDS)
Arbitrary Waveform Generation (ARB)
q MEDICAL/ULTRASOUND
q HIGH-SPEED INSTRUMENTATION AND
CONTROL
q VIDEO, DIGITAL TV
DESCRIPTION
The DAC904 is a high-speed, Digital-to-Analog Converter (DAC)
offering a 14-bit resolution option within the family of high-
performance converters. Featuring pin compatibility among fam-
ily members, the DAC908, DAC900, and DAC902 provide a
component selection option to an 8-, 10-, and 12-bit resolution,
respectively. All models within this family of DACs support
update rates in excess of 165MSPS with excellent dynamic
performance, and are especially suited to fulfill the demands of
a variety of applications.
The advanced segmentation architecture of the DAC904 is
optimized to provide a high Spurious-Free Dynamic Range
(SFDR) for single-tone, as well as for multi-tone signals—
essential when used for the transmit signal path of communica-
tion systems.
The DAC904 has a high impedance (200kΩ) current output with
a nominal range of 20mA and an output compliance of up to
1.25V. The differential outputs allow for both a differential or
single-ended analog signal interface. The close matching of the
current outputs ensures superior dynamic performance in the
differential configuration, which can be implemented with a
transformer.
Utilizing a small geometry CMOS process, the monolithic DAC904
can be operated on a wide, single-supply range of +2.7V to
+5.5V. Its low power consumption allows for use in portable and
battery-operated systems. Further optimization can be realized
by lowering the output current with the adjustable full-scale
option.
For noncontinuous operation of the DAC904, a power-down
mode results in only 45mW of standby power.
The DAC904 comes with an integrated 1.24V bandgap refer-
ence and edge-triggered input latches, offering a complete
converter solution. Both +3V and +5V CMOS logic families can
be interfaced to the DAC904.
The reference structure of the DAC904 allows for additional
flexibility by utilizing the on-chip reference, or applying an
external reference. The full-scale output current can be adjusted
over a span of 2-20mA, with one external resistor, while main-
taining the specified dynamic performance.
The DAC904 is available in SO-28 and TSSOP-28 packages.
+V_A
DAC904
FSA
REF_IN
BW
+V_D
Current
Sources
LSB
Switches
Segmented
Switches
I_OUT
I_OUT
BYP
INT/EXT
+1.24V Ref.
AGND
CLK
Latches
PD
14-Bit Data Input
D13...D0
DGND
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.
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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Copyright © 2002, Texas Instruments Incorporated