AD9847AKCPZ

Overview

The AD9847AKCPZ is a 10-bit CCD signal processor with an integrated timing driver, packaged in a 48-lead LQFP. It operates at pixel rates up to 40 MHz and supports analog supply voltages of 2.7 V to 3.6 V and digital supplies of 3.0 V to 5.5 V. The device includes a Correlated Double Sampler (CDS), a Pixel Gain Amplifier (PxGA) with -2 dB to +10 dB range, and a Variable Gain Amplifier (VGA) providing 2 dB to 36 dB gain. It features a 10-bit A/D converter, black level clamp, and Precision Timing core with 500 ps resolution. Operating temperature ranges from –20°C to +85°C.

Feature Summary

• Integrates a complete analog front end with A/D conversion and programmable timing driver for direct CCD interface.
• Features a Precision Timing core allowing high-speed clock adjustment with approximately 500 ps resolution.
• Includes on-chip 5 V horizontal and reset gate drivers capable of directly driving CCD inputs.

Applications

• Digital Still Cameras

Procurement Notes

Verify the specific suffix 'K' against the manufacturer's official documentation to confirm the exact temperature grade and package option. Confirm current availability status as this component may be subject to limited supply or discontinuation notices. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS circuitry.

Selection Notes

Select this component for applications requiring a highly integrated CCD signal processing solution with minimal external components. The internal timing driver reduces board space requirements by eliminating external clock buffers. Verify that the required pixel clock frequency does not exceed the specified 40 MHz maximum limit for optimal performance.

Part Context

The AD9847 belongs to Analog Devices' family of CCD signal processors designed for digital imaging systems. It combines analog signal conditioning with digital timing generation in a single package. This integration simplifies the design of camera sensor interfaces by reducing the bill of materials and layout complexity associated with separate timing and amplification stages.

Replacement Considerations

Consult the manufacturer's obsolescence notices for officially confirmed substitute part numbers. Cross-reference pinouts and electrical specifications carefully if considering alternative vendors, as timing driver capabilities and voltage levels may differ significantly between manufacturers.