The AD9837 is a low power, programmable waveform generator capable of producing sine, triangular, and square wave outputs.
The AD9837 is a low‑power, 8.5 mW waveform generator that operates from a 2.3 V to 5.5 V supply. It provides sine, triangular and square wave outputs and features a 28‑bit frequency register for fine resolution. The device includes a power‑down (sleep) mode to reduce current consumption when unused sections are disabled.
The part is accessed via a 3‑wire serial (SPI) interface (FSYNC, SCLK, SDATA) and is available in a 10‑lead LFCSP package. Detailed specifications cover DAC resolution, update rates, power consumption, timing characteristics, absolute maximum ratings, thermal resistance, ESD protection, pin functions, and typical performance curves.
| Power consumption | 8.5 mW at 2.3 V |
|---|---|
| Supply voltage | 2.3 V to 5.5 V |
| Frequency register resolution | 28 bits (0.06 Hz at 16 MHz) |
| DAC resolution | 10 bits |
| Update rate (A grade) | 5 MSPS |
| Update rate (B grade) | 16 MSPS |
The AD9837 includes a sleep function that can power down unused sections, such as the DAC, to minimize current consumption.
It is programmed via a 3‑wire SPI serial interface using FSYNC, SCLK and SDATA signals.
The device is supplied in a 10‑lead LFCSP_WD (lead‑frame chip‑scale package).