AD9806KSTZ

Overview

The AD9806KSTZ 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 signal chain includes an input clamp, correlated double sampler (CDS), digitally programmable gain amplifier (PGA), black level clamp, and a 10-bit A/D converter. It operates from a single 3 V supply with typical power consumption of 75 mW at 3.0 V or 65 mW at 2.7 V. The device provides a 3-wire serial interface for digital control of gain, black level, input configuration, and power-down modes. It is housed in a 48-lead LQFP package and rated for operation between –20°C and +85°C.

Feature Summary

• Pin-compatible with industry standard AD9803 for easy design upgrades
• Includes low noise PGA with 0 dB to 34 dB gain range in CCD mode
• Features two auxiliary 8-bit DACs for additional system flexibility
• Supports multiple input modes including AUX, AUXMID, and Direct ADC

Applications

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

Procurement Notes

Verify the specific suffix KSTZ corresponds to the –20°C to +85°C operating temperature range and the ST-48 thin plastic quad flatpack package option as listed in the ordering guide. Confirm that the component meets ESD sensitivity precautions during handling, as high-energy discharges may cause permanent damage despite internal protection circuitry.

Selection Notes

Select this component when interfacing with interlaced or progressive scan CCD arrays requiring a single-channel solution. Ensure the design accommodates the 18 MHz maximum clock rate and the 3 V single-supply requirement. Consider the pin compatibility with AD9803 if migrating existing designs, noting differences in NC pins and bypass connections.

Part Context

The AD9806 serves as a specialized signal processor within Analog Devices' portfolio for imaging applications. It integrates functions typically requiring multiple discrete components into a single chip, reducing board space and complexity. The KSTZ variant specifically denotes the industrial temperature range and LQFP packaging suitable for surface-mount assembly in consumer electronics.

Replacement Considerations

The AD9803 is pin-compatible but lacks some advanced features like the auxiliary DACs and higher performance CDS. Verify functional requirements against the AD9806 specifications before substituting, as direct pin-for-pin replacement may not provide equivalent signal conditioning capabilities.