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Burr-Brown Corporation - 12-Bit/ 165MSPS DIGITAL-TO-ANALOG CONVERTER

Numéro de référence DAC902U
Description 12-Bit/ 165MSPS DIGITAL-TO-ANALOG CONVERTER
Fabricant Burr-Brown Corporation 
Logo Burr-Brown Corporation 





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DAC902U fiche technique
®
DAC902
DAC902
For most current data sheet and other product
information, visit www.burr-brown.com
DAC902
TM 12-Bit, 165MSPS
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q SINGLE +5V OR +3V OPERATION
q HIGH SFDR: 5MHz Output at 100MSPS: 67dBc
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 DAC902 is a high-speed, digital-to-analog converter (DAC)
offering a 12-bit resolution option within the SpeedPlus Family
of high-performance converters. Featuring pin compatibility
among family members, the DAC908, DAC900, and DAC904
provide a component selection option to an 8-, 10-, and 14-bit
resolution, respectively. All models within this family of D/A
converters 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 DAC902 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 DAC902 has a high impedance (200k) 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
DAC902 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 DAC902, a power-down
mode results in only 45mW of standby power.
The DAC902 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 DAC902.
The reference structure of the DAC902 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 2mA to 20mA, with one external resistor, while
maintaining the specified dynamic performance.
The DAC902 is available in the SO-28 and TSSOP-28 pack-
ages.
+VA
DAC902
FSA
REFIN
INT/EXT
BW +VD
Current
Sources
LSB
Switches
Segmented
Switches
IOUT
IOUT
BYP
+1.24V Ref.
AGND
CLK
Latches
PD
12-Bit Data Input
D11...D0
DGND
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1999 Burr-Brown Corporation
PDS-1447B
Printed in U.S.A. May, 2000

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