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AD5932 데이터시트(PDF) 1 Page - Analog Devices |
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AD5932 데이터시트(HTML) 1 Page - Analog Devices |
1 / 28 page Programmable Frequency Scan Waveform Generator AD5932 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other 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 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. FEATURES GENERAL DESCRIPTION Programmable frequency profile 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. No external components necessary Output frequency up to 25 MHz Burst-and-listen capability 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 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. APPLICATIONS Frequency scanning/radar Network/impedance measurements Incremental frequency stimulus Sensory applications Proximity and motion (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; other patents pending. |
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