AD9945KCPZRL7

Overview

The AD9945KCPZRL7 is a complete analog signal processor for CCD applications, featuring a 40 MHz single-channel architecture. It integrates a correlated double sampler (CDS), a digitally controlled variable gain amplifier (VGA) with a range of 6 dB to 40 dB, an optical black clamp circuit, and a 12-bit A/D converter. The device operates from a single 3 V supply, typically dissipating 160 mW in normal operation. It utilizes a 3-wire serial digital interface for register programming and is housed in a space-saving 32-lead LFCSP package.

Feature Summary

• Integrates a 40 MSPS correlated double sampler and a 12-bit ADC with guaranteed no missing codes.
• Includes a programmable variable gain amplifier offering a gain range from 6 dB to 40 dB with 10-bit resolution control.
• Features a low noise optical black clamp circuit for effective DC restore and black level adjustment.
• Operates on a single 3 V power supply with low power consumption suitable for portable imaging devices.

Applications

• Digital Still Cameras
• Digital Video Camcorders
• PC Cameras
• Portable CCD Imaging Devices
• CCTV Cameras

Procurement Notes

Verify the specific ordering suffix RL7 indicates reel packaging when sourcing components. Confirm that the K suffix denotes the extended temperature range of -20°C to +85°C. Ensure compatibility with the 32-lead LFCSP footprint during procurement planning. Check current availability status as supply may be limited for this specific variant.

Selection Notes

Select the AD9945KCPZRL7 for applications requiring a complete analog front end for interlaced or progressive scan CCD arrays. Ensure the system timing generator supports the required SHP, SHD, and DATACLK signals. Verify that the host processor can interface with the 3-wire serial protocol. Consider the 160 mW power dissipation for thermal management within the 5 mm x 5 mm package constraints.

Part Context

The AD9945KCPZRL7 belongs to the AD9945 family of CCD signal processors manufactured by Analog Devices Inc. It serves as a direct replacement for the non-reel version AD9945KCPZ, differing primarily in packaging format. This component is part of Analog Devices' portfolio designed for high-performance image processing in consumer electronics.

Replacement Considerations

The AD9945KCPZ is the non-reel equivalent of this component. Verify pinout and electrical specifications match before substitution. No other direct substitutes are documented in the official datasheet.