AD9806KST

Overview

The AD9806KST is a complete analog signal processor for CCD applications, featuring an 18 MHz single-channel architecture designed to sample and condition outputs of interlaced and progressive scan area CCD arrays. The device integrates an input clamp, correlated double sampler (CDS), digitally programmable gain amplifier (PGA) with 0 dB to 34 dB range, black level clamp, and a 10-bit A/D converter. It operates from a single 3 V power supply, dissipating 75 mW at 3.0 V. The component is housed in a 48-lead LQFP package and specified for operation between –20°C and +85°C.

Feature Summary

• Integrates a 10-bit, 18 MSPS analog-to-digital converter with a low-noise correlated double sampler and digitally programmable gain amplifier.
• Supports multiple input modes including CCD, AUX, AUXMID, and direct ADC input via dedicated pins with configurable clamping and gain stages.
• Includes two auxiliary 8-bit digital-to-analog converters and a 3-wire serial interface for comprehensive digital control of operational parameters.

Applications

• Camcorders (8 mm and DVC)
• Digital Still Cameras

Procurement Notes

Verify the specific ordering suffix KST corresponds to the Thin Plastic Quad Flatpack (LQFP) ST-48 package option. Confirm that the temperature range matches the specified –20°C to +85°C industrial grade. Ensure compatibility with existing AD9803 sockets if replacing legacy designs, noting pin differences such as NC connections and bypass requirements.

Selection Notes

Select this component for single-channel CCD signal processing requiring integrated CDS and digitization. Consider the 10-bit resolution and 18 MHz maximum clock rate for bandwidth needs. Evaluate the 3 V single-supply operation against system power constraints. Verify interface compatibility with the host controller's 3-wire serial protocol capabilities.

Part Context

The AD9806KST belongs to the AD9806 family of CCD signal processors manufactured by Analog Devices Inc. It serves as a pin-compatible successor to the industry-standard AD9803, allowing for drop-in upgrades in existing designs while providing enhanced features like auxiliary DACs and additional input modes.

Replacement Considerations

The AD9806 is pin-compatible with the AD9803. Review Table I in the datasheet for pin differences, specifically regarding NC pins and bypass capacitor connections when substituting into AD9803 sockets.