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AD5932 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD5932
Description  Programmable Frequency Scan Waveform Generator
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD5932 Datasheet(HTML) 1 Page - Analog Devices

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Programmable Frequency Scan
Waveform Generator
Data Sheet
AD5932
Rev. C
Document Feedback
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
©2006–2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
Programmable frequency profile
No external components necessary
Output frequency up to 25 MHz
Preprogrammable frequency profile minimizes number of
DSP/microcontroller writes
Sinusoidal/triangular/square wave outputs
Automatic or single pin control of frequency stepping
Power-down mode: 20 µA
Power supply: 2.3 V to 5.5 V
Automotive temperature range: −40°C to +125°C
16-lead, Pb-free TSSOP
APPLICATIONS
Frequency scanning/radar
Network/impedance measurements
Incremental frequency stimulus
Sensory applications
Proximity and motion
GENERAL DESCRIPTION
The AD59321 is a waveform generator offering a programmable
frequency scan. Utilizing embedded digital processing that
allows enhanced frequency control, the device generates
synthesized analog or digital frequency-stepped waveforms.
Because frequency profiles are preprogrammed, continuous
write cycles are eliminated, thereby freeing up valuable
DSP/microcontroller resources. Waveforms start from a known
phase and are incremented phase-continuously, which allows
phase shifts to be easily determined. Consuming only 6.7 mA,
the AD5932 provides a convenient low power solution to
waveform generation.
The AD5932 outputs each frequency in the range of interest for
a defined length of time and then steps to the next frequency in
the scan range. The length of time the device outputs a particular
frequency is preprogrammed, and the device increments the
frequency automatically; or, alternatively, the frequency is
incremented externally via the CTRL pin. At the end of the
range, the AD5932 continues to output the last frequency until
the device is reset. The AD5932 also offers a digital output via
the MSBOUT pin.
(continued on Page 3)
FUNCTIONAL BLOCK DIAGRAM
AD5932
DVDD
CAP/2.5V
DGND
INTERRUPT
STANDBY
AGND
AVDD
VCC
2.5V
SYNC
MCLK
CTRL
FSYNC
SYNCOUT
MSBOUT
VOUT
COMP
SCLK
SDATA
DATA AND CONTROL
FREQUENCY
CONTROLLER
INCREMENT
CONTROLLER
CONTROL
REGISTER
ON-BOARD
REFERENCE
FULL-SCALE
CONTROL
24-BIT
PIPELINED
DDS CORE
10-BIT
DAC
SERIAL INTERFACE
REGULATOR
DATA
INCR
BUFFER
BUFFER
/
24
Figure 1.
1
Protected by U.S. patent number 6747583.


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