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.

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