參數(shù)資料
型號： EVAL-AD9832SDZ
廠商： Analog Devices Inc
文件頁數(shù)： 1/28頁
文件大?。?/td> 0K
描述： BOARD EVAL FOR AD9832
標準包裝： 1
系列： *
25 MHz Direct Digital Synthesizer,
Waveform Generator
Data Sheet
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
1999–2013 Analog Devices, Inc. All rights reserved.
FEATURES
25 MHz speed
On-chip SIN lookup table
On-chip, 10-bit DAC
Serial loading
Power-down option
Temperature range: 40°C to +85°C
200 mW power consumption
16-Lead TSSOP
APPLICATIONS
Frequency stimulus/waveform generation
Frequency phase tuning and modulation
Low power RF/communications systems
Liquid and gas flow measurement
Sensory applications: proximity, motion, and defect
detection
Test and medical equipment
GENERAL DESCRIPTION
The AD9832 is a numerically controlled oscillator employing
a phase accumulator, a sine look-up table, and a 10-bit digital-
to-analog converter (DAC) integrated on a single CMOS chip.
Modulation capabilities are provided for phase modulation and
frequency modulation.
Clock rates up to 25 MHz are supported. Frequency accuracy can
be controlled to one part in 4 billion. Modulation is effected by
loading registers through the serial interface.
A power-down bit allows the user to power down the AD9832
when it is not in use, the power consumption being reduced to
5 mW (5 V) or 3 mW (3 V). The part is available in a 16-lead
TSSOP package.
Similar DDS products can be found at www.analog.com/DDS.
FUNCTIONAL BLOCK DIAGRAM
IOUT
COMP
REFIN
FS ADJUST
REFOUT
AGND
AVDD
DGND
DVDD
MCLK
PSEL0 PSEL1
12
AD9832
ON-BOARD
REFERENCE
10-BIT DAC
PHASE0 REG
PHASE1 REG
PHASE2 REG
PHASE3 REG
FULL-SCALE
CONTROL
SIN
ROM
PHASE
ACCUMULATOR
(32 BIT)
FREQ0 REG
FREQ1 REG
16-BIT DATA REGISTER
SYNC
FSELECT
BIT
SELSRC
SYNC
8 LSBs
8 MSBs
DECODE LOGIC
FSYNC
SCLK
SDATA
SERIAL REGISTER
CONTROL REGISTER
FSELECT/PSEL REGISTER
DEFER REGISTER
SYNC
SELSRC
PSEL0
BIT
PSEL1
BIT
MUX
M
UX
MU
X
MUX
09090-
001
Figure 1.
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