ad5932 Analog Devices, Inc., ad5932 Datasheet

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ad5932

Manufacturer Part Number
ad5932
Description
Programmable Frequency Scan Waveform Generator
Manufacturer
Analog Devices, Inc.
Datasheet

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ad5932YRUZ
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4 130
Programmable frequency profile
Output frequency up to 25 MHz
Burst-and-listen capability
Preprogrammable frequency profile minimizes number of
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
1
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
FEATURES
Protected by U.S. patent number 6747583; other patents pending.
DSP/microcontroller writes
Proximity and motion
No external components necessary
MCLK
CTRL
REGULATOR
FSYNC
DVDD
SERIAL INTERFACE
DATA
CAP/2.5V
SCLK
CONTROLLER
CONTROLLER
FREQUENCY
INCREMENT
DATA AND CONTROL
INCR
VCC
2.5V
SDATA
DGND
FUNCTIONAL BLOCK DIAGRAM
SYNC
/
REGISTER
CONTROL
24
INTERRUPT
Figure 1.
AD5932
Programmable Frequency Scan
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
GENERAL DESCRIPTION
The AD5932
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.
PIPELINED
DDS CORE
REFERENCE
ON-BOARD
24-BIT
STANDBY
1
is a waveform generator offering a programmable
AGND
Waveform Generator
FULL-SCALE
BUFFER
BUFFER
CONTROL
10-BIT
DAC
©2006 Analog Devices, Inc. All rights reserved.
AVDD
SYNCOUT
MSBOUT
VOUT
COMP
(continued on Page 3)
AD5932
www.analog.com

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