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PDF ( 数据手册 , 数据表 ) DAC908E

零件编号 DAC908E
描述 8-Bit/ 165MSPS DIGITAL-TO-ANALOG CONVERTER
制造商 Burr-Brown Corporation
LOGO Burr-Brown Corporation LOGO 


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DAC908E 数据手册, 描述, 功能
®
DAC908
DAC908
For most current data sheet and other product
information, visit www.burr-brown.com
DAC908
TM 8-Bit, 165MSPS
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q SINGLE +5V OR +3V OPERATION
q HIGH SFDR: 5.04MHz 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 MEDICAL INSTRUMENTATION
Ultrasound (DBF)
q VIDEO, DIGITAL TV
q WAVEFORM GENERATION
Direct Digital Synthesis (DDS)
Arbitrary Waveform Generation (ARB)
q TEST INSTRUMENTATION
q COMMUNICATIONS
DESCRIPTION
The DAC908 is a high-speed, digital-to-analog converter (DAC)
offering an 8-bit resolution option within the SpeedPlus family
of high-performance converters. Featuring pin compatibility
among family members, the DAC900, DAC902, and DAC904
provide a component selection option to an 10-, 12-, 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 DAC908 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 DAC908 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
DAC908 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 DAC908, a power-down
mode results in only 45mW of standby power.
The DAC908 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 DAC908.
The reference structure of the DAC908 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 DAC908 is available in the SO-28 and TSSOP-28 pack-
ages.
+VA
DAC908
FSA
REFIN
INT/EXT
BW +VD
Current
Sources
LSB
Switches
Segmented
Switches
IOUT
IOUT
BYP
+1.24V Ref.
AGND
CLK
Latches
PD
8-Bit Data Input
D7...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-11507B
DAC908Printed in U.S.A. April, 2000
®







DAC908E pdf, 数据表
TYPICAL PERFORMANCE CURVES VD = VA = +3V
At TA = +25°C, differential transformer coupled output, 50doubly terminated, and SFDR up to Nyquist, unless otherwise noted.
85
80
75
70
65
60
55
0
SFDR vs fOUT AT 25MSPS (3V)
–6dBFS
0dBFS
2.0 4.0 6.0 8.0 10.0 12.0
Frequency (MHz)
85
80
75
70
65
60
55
0
SFDR vs fOUT AT 50MSPS (3V)
0dBFS
–6dBFS
5.0 10.0 15.0 20.0 25.0
Frequency (MHz)
85
80
75
70
65
60
55
50
45
0
SFDR vs fOUT AT 100MSPS (3V)
–6dBFS
0dBFS
10.0 20.0 30.0 40.0 50.0
Frequency (MHz)
85
80
75
70
65
60
55
50
45
0
SFDR vs fOUT AT 125MSPS (3V)
–6dBFS
0dBFS
10.0 20.0 30.0 40.0 50.0 60.0
Frequency (MHz)
80
75
70
65
60
55
50
45
40
0
SFDR vs fOUT AT 165MSPS (3V)
–6dBFS
0dBFS
10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0
Frequency (MHz)
SFDR vs IOUTFS and fOUT AT 100MSPS, 0dBFS (3V)
80
75 2.1MHz
70 5.04MHz
65 10.1MHz
60 20.2MHz
55
X
50 X X 40.4MHz
X
45
40
2
5 10
IOUTFS (mA)
20
®
DAC908
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