AD9945KCPZ

Overview

The AD9945KCPZ is a complete analog signal processor for CCD applications, featuring a 40 MHz single-channel architecture designed to sample and condition outputs of interlaced and progressive scan area CCD arrays. The signal chain includes a correlated double sampler (CDS), a digitally controlled variable gain amplifier (VGA) with 6 dB to 40 dB range, a black level clamp, and a 12-bit A/D converter. It operates from a single 3 V supply, dissipating 160 mW in normal operation. The device utilizes a 3-wire serial digital interface for register programming and is housed in a space-saving 32-lead 5 mm x 5 mm LFCSP package.

Feature Summary

• Integrates a 40 MSPS Correlated Double Sampler (CDS) for noise rejection.
• Includes a 10-bit Variable Gain Amplifier (VGA) providing 6 dB to 40 dB gain adjustment.
• Features a low-noise optical black clamp circuit with programmable level control.
• Contains a 12-bit A/D converter with no missing codes guaranteed.

Applications

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

Procurement Notes

Verify the specific ordering suffix KCPZ indicates RoHS compliance and the standard lead frame chip scale package option CP-32-7. Confirm that the component meets the required industrial temperature range of -20°C to +85°C for your deployment environment. Ensure proper ESD precautions are observed during handling due to the sensitivity of the internal circuitry.

Selection Notes

Select this component when a single-channel CCD signal processing solution with integrated timing generation is required. It is suitable for applications needing high dynamic range and low power consumption within a compact footprint. Consider the 3-wire serial interface compatibility with your host controller before finalizing the design choice.

Part Context

The AD9945KCPZ belongs to the Analog Devices AD9945 family of CCD signal processors. It serves as a comprehensive analog front-end solution, combining signal conditioning and digitization into a single integrated circuit. This integration reduces board space and simplifies system design compared to discrete component implementations.

Replacement Considerations

The AD9945KCPZRL7 is a tape and reel version of the same functional device. Verify pinout and electrical specifications match if substituting with other models from the AD994x series or competitor parts.