AD9845BJSTZ

Overview

The AD9845BJSTZ is a complete 12-bit, 30 MSPS CCD signal processor featuring an integrated analog front end. It operates from a single 3 V supply with typical power consumption of 153 mW and is housed in a 48-lead LQFP package. The device includes a correlated double sampler (CDS), a Pixel Gain Amplifier (PxGA) with 6-bit resolution, and a variable gain amplifier (VGA) offering 2 dB to 36 dB gain control via a 10-bit serial interface. Additional features include low noise clamp circuits, preblanking functions, auxiliary inputs, and a 3-wire digital interface for register programming.

Feature Summary

• Integrated signal chain comprising input clamp, CDS, PxGA, VGA, black level clamp, and 12-bit ADC
• Programmable color steering with seven modes for various CCD filter arrays
• Low power operation optimized for single-supply 3 V systems
• Serial digital interface for configuring gain, black level, and power-down modes

Applications

• High performance digital still cameras
• Industrial imaging systems
• Scientific imaging applications

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or direct channels. Confirm the specific suffix matches the required temperature range and package variant. Request original manufacturer documentation to validate specifications against current datasheet revisions before integration into design.

Selection Notes

Select this component for applications requiring high-speed CCD signal conditioning with integrated gain adjustment. Ensure the system supports the 3-wire serial interface timing requirements. Verify that the single-channel architecture aligns with the sensor output configuration and that the 30 MHz maximum clock rate meets the frame rate demands.

Part Context

This model represents the industrial grade version of the AD9845B series. It is functionally pin-compatible with the AD9845A designs, allowing for direct upgrades in existing architectures. The device serves as a specialized analog-to-digital converter front end tailored for interlaced and progressive scan area CCD arrays.

Replacement Considerations

The AD9845A is the predecessor model with pin compatibility. No other direct substitutes are documented in official sources.