AD9857ASTZ

Overview

The AD9857ASTZ is a CMOS quadrature digital upconverter featuring a 200 MSPS sampling rate and 14-bit resolution. It integrates a high-speed direct digital synthesizer, a 14-bit DAC, and an interpolating filter within an 80-pin LQFP package. The device operates on a single 3.3 V supply across a -40°C to +85°C temperature range. It supports serial and parallel interfaces for control and data input.

Feature Summary

• Integrates a high-speed direct digital synthesizer with a 14-bit digital-to-analog converter
• Functions as a universal I/Q modulator and agile upconverter
• Includes an internal interpolating filter for signal processing

Applications

• Universal I/Q modulation in communication systems
• Agile frequency upconversion applications
• Single-tone direct digital synthesis generation
• Interpolating digital-to-analog conversion tasks

Procurement Notes

Verify the specific suffix ASTZ against the manufacturer's current datasheet to confirm pinout and electrical characteristics. Ensure compatibility with the required 3.3 V power supply and interface protocols before integration into the design.

Selection Notes

Select this component when a combined DDS and DAC solution is required for quadrature signal generation. The integrated interpolating filter reduces external processing requirements. Verify that the 200 MSPS speed and 14-bit resolution meet the system's bandwidth and dynamic range specifications.

Part Context

This part belongs to the AD9857 series of specialized data acquisition components. It is designed for high-performance communications applications requiring precise frequency synthesis and modulation capabilities within a compact integrated circuit form factor.

Replacement Considerations

Consult official Analog Devices documentation for verified substitute part numbers. Cross-reference pinouts and electrical parameters carefully to ensure functional equivalence in existing designs.