AD9846AJSTZ

Overview

The AD9846AJSTZ is a complete analog signal processor for CCD applications, featuring a 30 MHz single-channel architecture. It includes an input clamp, correlated double sampler (CDS), Pixel Gain Amplifier (PxGA), variable gain amplifier (VGA), black level clamp, and a 10-bit A/D converter. The device operates from a single 3 V power supply with typical power consumption of 117 mW. Key specifications include a maximum clock rate of 30 MHz, 10-bit ADC resolution, and a VGA gain range of 2 dB to 36 dB. It is housed in a 48-lead LQFP package.

Feature Summary

• Integrated 30 MSPS Correlated Double Sampler (CDS) for noise reduction
• Programmable 6-Bit Pixel Gain Amplifier (PxGA) for color steering
• Digitally controlled Variable Gain Amplifier (VGA) with 10-bit resolution
• Low Noise Clamp Circuits with Analog Preblanking Function

Applications

• Digital Still Cameras
• Digital Video Camcorders
• Industrial Imaging

Procurement Notes

Verify the specific suffix 'JSTZ' against official documentation to confirm temperature range and packaging details. Ensure compatibility with 3 V single-supply systems and check for ESD sensitivity during handling. Confirm that the 48-lead LQFP footprint matches the target PCB layout requirements.

Selection Notes

Select this component for CCD signal processing requiring integrated CDS and PxGA functions. Consider the 30 MHz maximum clock rate and 10-bit resolution for system bandwidth needs. Evaluate power consumption at 117 mW for thermal management. Verify serial interface timing constraints for register programming.

Part Context

The AD9846A is part of Analog Devices' family of CCD signal processors designed for high-quality image conditioning. It integrates multiple signal chain stages into a single chip, reducing external component count. The AJSTZ variant specifically denotes the industrial temperature range and plastic quad flatpack packaging.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Generic replacements may lack integrated PxGA or specific CCD timing features.