AD9804AJSTZ

Overview

The AD9804AJSTZ is a high-performance direct digital synthesizer (DDS) manufactured by Analog Devices Inc. It integrates a 12-bit high-speed DAC, a wideband voltage-controlled oscillator (VCO), and a complete frequency synthesizer on a single chip. The device operates with a supply voltage of 3.3 V and supports serial interface control for programming. It features an internal clock multiplier and provides quadrature analog outputs. The component is housed in a 44-lead LQFP package and is rated for operation within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a 12-bit DAC and wideband VCO for compact signal generation
• Provides true quadrature analog output signals
• Supports serial interface configuration for simplified system integration

Applications

• Wireless communication systems
• Test and measurement equipment
• Electronic warfare applications

Procurement Notes

Verify the specific suffix 'J' indicates the industrial temperature grade (-40°C to +85°C) compared to commercial variants. Confirm the 'STZ' suffix denotes lead-free packaging compliant with RoHS standards. Cross-reference the manufacturer's current lifecycle status to ensure availability for new designs.

Selection Notes

Select this component when a monolithic DDS solution with integrated VCO is required to minimize board space. Ensure the application benefits from the internal clock multiplication feature. Verify that the 12-bit resolution and output frequency capabilities meet the system's spectral purity requirements.

Part Context

This part belongs to the AD9804 family of direct digital synthesizers. It serves as a complete RF signal generator solution, eliminating the need for external mixers or multipliers found in traditional synthesizer architectures. The device simplifies design by combining digital synthesis with analog RF output stages.