AD9858BSVZ

Overview

The AD9858BSVZ is a Direct Digital Synthesizer (DDS) featuring an integrated 10-bit digital-to-analog converter (DAC) operating at up to 1 GSPS. It generates frequency-agile analog sine wave outputs up to 400 MHz using advanced DDS technology and a 32-bit programmable frequency register. The device supports a reference clock input range of 10 MHz to 1 GHz, extendable to 2 GHz with the internal divide-by-2 function enabled. It operates on a single 3.3 V power supply with typical power dissipation of 2 W. The component includes an integrated charge pump, phase frequency detector, and a 2 GHz analog mixer for complex synthesis applications.

Feature Summary

• Integrated high-speed 10-bit DAC capable of 1 GSPS operation for direct waveform generation.
• Built-in analog mixer supporting RF translation loops and tuners with inputs up to 2 GHz.
• Programmable charge pump and phase frequency detector with fast lock circuitry for PLL integration.
• Dual control interface options including simplified 8-bit parallel mode and SPI serial mode.

Applications

• VHF/UHF local oscillator synthesis
• Cellular base station hopping synthesizers
• SONET/SDH clock synthesis
• Agile clock synthesis systems

Procurement Notes

Verify the specific suffix 'SVZ' against the manufacturer's current ordering guide to confirm package type and RoHS compliance status. Ensure the design accommodates the TQFP-100 thermal requirements, as the exposed paddle must be soldered to a ground plane for proper heat transfer. Confirm that the application environment stays within the specified -40°C to +85°C industrial temperature range.

Selection Notes

Select this component when a single-chip solution combining DDS, PLL, and mixing functions is required. The AD9858 is suitable for designs needing fast frequency hopping and fine tuning resolution via its 32-bit frequency word. Consider the 2 W typical power dissipation and ensure adequate PCB thermal management or airflow is available to maintain junction temperatures within safe limits during continuous operation.

Part Context

The AD9858 belongs to Analog Devices' family of high-performance Direct Digital Synthesizers. It distinguishes itself by integrating an analog mixer and PFD alongside the core DDS engine, allowing for complex frequency translation architectures without external components. This integration reduces board space and simplifies design compared to discrete multi-component solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.