AD9847AKSTZ

Overview

The AD9847AKSTZ 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 an analog supply voltage range of 2.7 V to 3.6 V. The device includes a Correlated Double Sampler (CDS), a Pixel Gain Amplifier (PxGA) with -2 dB to +10 dB gain, and a Variable Gain Amplifier (VGA) providing 2 dB to 36 dB gain. A 10-bit ADC digitizes the signal, while the Precision Timing core offers 500 ps resolution for high-speed clock generation. It functions within a temperature range of –20°C to +85°C.

Feature Summary

• Integrates a complete analog front end with CDS, PxGA, VGA, black level clamp, and a 10-bit A/D converter.
• Features a Precision Timing core that allows adjustment of high-speed clocks with approximately 500 ps resolution.
• Includes on-chip 5 V horizontal and reset gate drivers capable of directly driving CCD inputs.
• Configured via a 3-wire serial interface for programmable operation.

Applications

• Digital still cameras

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or official channels. Confirm the specific ordering suffix matches the required package and temperature grade. Check current availability status as supply constraints may affect procurement timelines. Ensure proper ESD handling procedures are followed during storage and installation.

Selection Notes

Select this model when a highly integrated solution for digital still camera applications is required. Ensure the system master clock frequency does not exceed the maximum specified rate. Verify that the power supply voltages align with the specified ranges for analog and digital domains. Consider the thermal resistance characteristics if operating near the upper temperature limit.

Part Context

The AD9847 belongs to the Analog Devices family of CCD signal processors designed for imaging applications. It combines analog signal conditioning with digital timing generation in a single chip. This integration reduces board space and simplifies design compared to discrete solutions. The device is part of the broader portfolio of data converters and signal processing ICs offered by the manufacturer.

Replacement Considerations

Consult the manufacturer's documentation for direct pin-to-pin replacements or functional equivalents within the same product family. Verify compatibility regarding package dimensions, pinout configurations, and electrical specifications before substitution.