AD9833BRMZ-REEL7

Overview

The AD9833BRMZ-REEL7 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 features a 10-bit DAC with an update rate of 25 MSPS and produces sinusoidal, triangular, and square wave outputs in the 0 MHz to 12.5 MHz range. It utilizes a 28-bit frequency register for resolution down to 0.1 Hz at a 25 MHz reference clock. Communication occurs via a 3-wire SPI interface with SCLK up to 40 MHz. The component is housed in a 10-lead MSOP package and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• Digitally programmable frequency and phase control
• Integrated 10-bit digital-to-analog converter (DAC)
• Software-selectable power-down modes for current minimization
• Automotive qualification compliant with AEC-Q100 standards

Applications

• Frequency stimulus and waveform generation
• Liquid and gas flow measurement systems
• Proximity, motion, and defect detection sensors
• Time domain reflectometry (TDR) applications
• Test and medical equipment signal sources

Procurement Notes

Verify the specific suffix REEL7 indicates tape and reel packaging when sourcing. Confirm the B grade designation corresponds to the industrial temperature range of -40°C to +105°C. Ensure compatibility with the 10-lead MSOP footprint during procurement planning. Cross-reference the manufacturer part number against authorized distributors to guarantee authenticity.

Selection Notes

Select this component for applications requiring precise software-controlled waveform generation without external components. The 28-bit tuning word allows high frequency resolution suitable for sensitive sensing applications. Verify that the required output frequency remains within the Nyquist limit relative to the master clock input. Consider the 10-bit DAC resolution and SNR specifications for signal purity requirements.

Part Context

This part belongs to the AD9833 series of direct digital synthesis (DDS) integrated circuits. It serves as a compact solution for generating analog waveforms from digital control signals. The BRMZ variant specifies the industrial temperature grade and surface-mount packaging. It is designed to replace discrete waveform generation circuits in space-constrained designs.

Replacement Considerations

The AD9834 offers higher clock speeds but requires a different package and pinout. Direct substitution is not possible without schematic redesign. Evaluate the AD9833WBRMZ-REEL for potential automotive or extended specification variants within the same package family.