AD9833BRM

Overview

The AD9833BRM is a low-power, programmable waveform generator manufactured by Analog Devices Inc. It operates on a 2.3 V to 5.5 V supply and consumes 12.65 mW at 3 V. The device generates sine, triangular, and square waves with an output frequency range of 0 MHz to 12.5 MHz. It features a 10-bit DAC, 28-bit frequency resolution (0.1 Hz at 25 MHz clock), and a 3-wire SPI interface. Operating temperature ranges from -40°C to +105°C in a 10-lead MSOP package.

Feature Summary

• Digitally programmable frequency and phase control via software
• Integrated direct digital synthesis architecture requiring no external components
• Low power consumption with dedicated sleep mode for unused sections
• Extended industrial temperature range capability

Applications

• Frequency stimulus and waveform generation
• Liquid and gas flow measurement systems
• Sensory applications including proximity, motion, and defect detection
• Time domain reflectometry (TDR) applications

Procurement Notes

Verify the specific suffix against the manufacturer's current ordering guide to confirm package type and tape/reel specifications. Confirm automotive qualification status if required for the target application. Ensure the serial interface timing parameters match the host microcontroller capabilities before finalizing procurement.

Selection Notes

Select this component for applications requiring precise frequency tuning without external analog components. Verify that the host system supports the 3-wire serial interface protocol. Consider the 10-bit resolution limits for high-fidelity audio or precision instrumentation needs. Check power supply constraints against the 2.3 V to 5.5 V operating range.

Part Context

This part belongs to the AD9833 series of Direct Digital Synthesis (DDS) devices. It is designed as a complete solution for waveform generation, integrating the phase accumulator, SIN ROM, and DAC on a single CMOS chip. The BRM variant specifically denotes the industrial temperature grade and MSOP packaging configuration.

Replacement Considerations

Check the AD9833BRMZ for identical electrical specifications with a different package option. Evaluate the AD9837 for higher performance requirements. Verify pin compatibility and register mapping when substituting with other DDS family members.