AD9042ASTZ

Overview

The AD9042ASTZ is a monolithic 12-bit analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 5 V supply and delivers a guaranteed minimum sample rate of 41 MSPS. The device features an internal track-and-hold circuit and voltage reference, packaged in a 44-lead LQFP. Key electrical specifications include a typical signal-to-noise ratio (SNR) of 68 dB and a spurious-free dynamic range (SFDR) of 80 dB at −1 dBFS input. Power dissipation is rated at 595 mW. The component supports parallel CMOS-compatible digital outputs coded in two's complement format.

Feature Summary

• Integrated on-chip track-and-hold and voltage reference for complete conversion solution
• CMOS-compatible digital output interface with two's complement encoding
• High-speed multipass architecture ensuring 12-bit accuracy without laser trimming

Applications

• Cellular and PCS base stations
• GPS anti-jamming receivers
• Communications receivers
• Spectrum analyzers
• Medical imaging systems

Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature grade. The ASTZ designation indicates surface mount packaging in a 44-lead LQFP. Confirm RoHS compliance status through official documentation before procurement. Ensure availability matches current production lifecycle status.

Selection Notes

Select this component for wideband multi-channel receiver applications requiring low power consumption. Verify that the 41 MSPS sampling rate meets system bandwidth requirements. Check that the single-ended analog input range aligns with source signal levels. Consider differential clock driving for optimal SNR performance.

Part Context

This part belongs to the AD9042 series of high-performance ADCs. It utilizes Analog Devices' XFCB process technology. The industrial grade variant covers temperatures from -40°C to +85°C. Military grade options are available for extended temperature ranges up to +125°C.

Replacement Considerations

Consult Analog Devices for military-grade alternatives or updated package variants. No direct cross-brand substitutes are officially documented.