AD9834CRUZ-REEL7

Overview

The AD9834CRUZ-REEL7 is a 75 MHz low-power Direct Digital Synthesis (DDS) device manufactured by Analog Devices Inc. It operates on a 2.3 V to 5.5 V power supply and consumes 20 mW at 3 V. The component features a 10-bit DAC with an update rate of 75 MSPS, producing sine and triangular waveforms up to 37.5 MHz. It includes a 28-bit frequency register for precise tuning and an onboard comparator for square wave generation. The device utilizes a 3-wire SPI interface operating at clock rates up to 40 MHz and is housed in a 20-lead TSSOP package.

Feature Summary

• Integrated onboard comparator for generating square wave outputs from sinusoidal signals
• Independent analog and digital power supply sections allowing mixed voltage operation
• Programmable frequency and phase modulation capabilities via serial interface or control pins
• Power-down options to minimize current consumption when specific sections are unused

Applications

• Frequency stimulus and waveform generation
• Low power RF and communications systems
• Liquid and gas flow measurement
• Proximity, motion, and defect detection sensors
• Test and medical equipment

Procurement Notes

Verify the C-grade specification against project requirements, as it supports a maximum master clock of 75 MHz compared to the B-grade limit of 50 MHz. Confirm that the 20-TSSOP surface-mount package aligns with the target PCB footprint. Ensure the ordering suffix matches the required reel packaging format for automated assembly processes.

Selection Notes

Select this component for applications requiring high-resolution frequency synthesis with minimal external circuitry. The C-grade variant is suitable for designs needing the full 75 MHz clock capability. Consider the narrow-band SFDR performance if spurious signal suppression is critical. Verify that the 10-bit resolution meets the dynamic range requirements of the intended signal processing chain.

Part Context

This part belongs to the AD9834 family of complete DDS devices. It shares functional similarities with the AD9833 and AD9837 but offers distinct pin counts and performance characteristics. The CRUZ-REEL7 designation indicates a specific temperature grade and tape-and-reel packaging configuration provided by the manufacturer for industrial volume production.

Replacement Considerations

Public confirmed substitute part numbers: AD9834BRUZ-REEL7.