The AD5932 is a waveform generator from AD company. It supports frequency scanning and can generate analog or digital frequency stepped waveforms. The device uses embedded digital processing technology to achieve enhanced frequency control. Since the frequency is pre-programmed, 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. The AD5932 consumes only 6.7 mA of power and provides a convenient low-power solution for waveform generation. No external components are required, the output frequency can reach 25MHz, and it has burst and listen capability and a pre-programmed frequency profile.
The AD5932 is a programmable waveform generator that provides a frequency‑scan capability with up to 25 MHz output. It offers pre‑programmed frequency profiles, burst‑and‑listen operation, and a 3‑wire serial interface that can run at clock rates up to 40 MHz. The device operates from a 2.3 V to 5.5 V supply and includes a standby mode to reduce power consumption.
The handbook includes a functional block diagram, detailed timing specifications, absolute maximum ratings, and a test circuit. It also lists typical performance characteristics such as 10‑bit DAC resolution, 50 MSPS update rate, and a wake‑up time of 1.7 ms. Application examples cover frequency scanning, radar, impedance measurement, and motion sensing.
| Power supply voltage range | 2.3 V to 5.5 V |
|---|---|
| DAC resolution | 10 Bits |
| Update rate | 50 MSPS |
| VOUT peak‑to‑peak | 0.58 Vpp |
| Power‑down mode current | 20 pA |
| Operating temperature (automotive) | ‑40 °C to +125 °C |
| Wake‑up time from standby | 1.7 ms |
| Output rise/fall time | 12 ns |
The AD5932 operates from a supply voltage of 2.3 V to 5.5 V.
The DAC in the AD5932 provides a 10‑bit resolution.
The frequency‑scan profile is initiated, started, and executed by toggling the CTRL pin.
The automotive version operates from –40 °C to +125 °C.