AD5932

www.DataSheet4U.com Programmable Frequency Scan Waveform Generator AD5932 FEATURES Programmable frequency profile 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 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 th...