Analog Devices Inc.

AD9834BRU  

Direct Digital Synthesis

AD9834BRU Description

The AD9834BRU from Analog Devices Inc. is a Direct Digital Synthesis (DDS) IC designed for high-precision frequency generation. Operating with a 50 MHz master clock (fclk), it delivers 10-bit resolution and a 28-bit tuning word width, enabling fine frequency control with low phase noise. The device supports a wide supply voltage range (2.3V–5.5V), making it versatile for both low-power and standard applications. Packaged in a 20-pin TSSOP and classified as obsolete, it remains a robust choice for legacy designs requiring stable, programmable waveform generation.

AD9834BRU Features

• High Resolution: 28-bit tuning word ensures precise frequency tuning with minimal step size.
• Low Power Operation: Wide voltage range (2.3V–5.5V) suits battery-powered and portable devices.
• Integrated DDS Core: Eliminates need for external PLLs, simplifying design and reducing BOM cost.
• Surface-Mount Packaging (TSSOP): Compact footprint ideal for space-constrained PCBs.
• Obsolete Status: Still reliable for maintenance or legacy system upgrades.
• Unlimited MSL (Moisture Sensitivity Level 1): Suitable for extended storage and handling.

AD9834BRU Applications

• Test & Measurement Equipment: Signal generators, frequency synthesizers.
• Communications Systems: Local oscillators, modulation/demodulation circuits.
• Industrial Automation: Precision timing, motor control, and sensor excitation.
• Medical Devices: Ultrasonic imaging, therapeutic equipment requiring stable waveforms.
• Legacy System Support: Replacing older DDS solutions without redesign.

Conclusion of AD9834BRU

The AD9834BRU excels in applications demanding programmable frequency synthesis with high resolution and low power consumption. While obsolete, its performance, integration, and flexibility make it a viable option for sustaining legacy designs or cost-sensitive projects. Engineers valuing precision, simplicity, and broad voltage compatibility will find it a dependable solution despite newer alternatives.

AD9834BRU Documents

Download datasheets and manufacturer documentation for AD9834BRU

Datasheets :

AD9834      

Design Resources :

Amplitude Control Circuit for AD9834 Waveform Generator (CN0156)      

PCN Obsolescence/ EOL :

Lead(Pb)- Bearing Dev OBS 19/Jun/2017      

HTML Datasheet :

20-TSSOP Pkg Drawing