AD9822JRSZRL

Overview

The AD9822JRSZRL is a complete analog signal processor for CCD imaging applications, featuring a 14-bit ADC with a maximum conversion rate of 15 MSPS in 3-channel mode and 12.5 MSPS in 1-channel mode. It supports 3-channel operation up to 15 MSPS or 1-channel operation up to 12.5 MSPS, utilizing correlated double sampling (CDS) or sample-and-hold (SHA) architectures. The device includes programmable gain amplifiers (PGA) with gains from 1× to 5.7 V/V in 64 steps, and programmable offset adjustment ranging from −350 mV to +350 mV in 512 steps. It operates on a single 5 V supply, consuming typically 385 mW, and features a 3-wire serial digital interface for register configuration.

Feature Summary

• Integrates three independent channels, each containing an input clamp, correlated double sampler (CDS), offset DAC, and programmable gain amplifier (PGA) multiplexed to a high-performance 14-bit ADC.
• Supports flexible operating modes including 3-channel CDS, 3-channel SHA, 1-channel CDS, and 1-channel SHA, selectable via internal registers.
• Features a multiplexed byte-wide output format (8+6) accessed through two read cycles, compatible with standard digital interfaces.
• Includes internal voltage reference and bias generation, reducing external component count while maintaining low power consumption.

Applications

• Flatbed document scanners
• Film scanners
• Digital color copiers
• Multifunction peripherals

Procurement Notes

Verify the specific suffix 'RL' indicates reel packaging when sourcing. Confirm RoHS compliance status as per current manufacturer documentation. Check for obsolescence notices or lifecycle status updates from Analog Devices. Ensure ESD precautions are observed during handling due to sensitivity. Validate pin compatibility with existing PCB footprints before integration.

Selection Notes

Select this component for applications requiring integrated signal conditioning for trilinear color CCD arrays. Consider the 14-bit resolution and 15 MSPS speed for high-quality image capture needs. Evaluate the need for CDS versus SHA modes based on sensor type. Verify power supply requirements match the single 5 V specification. Assess thermal management needs given the typical power dissipation of 385 mW.

Part Context

The AD9822 belongs to Analog Devices' family of CCD signal processors designed for imaging applications. It serves as an analog front-end solution, bridging CCD sensors and digital processing units. The JRSZRL designation specifies the industrial temperature range, SSOP package, and tape-and-reel packaging format within the broader AD9822 product line.

Replacement Considerations

Check for direct replacements like AD9822 variants with different packages or suffixes. Consider AD9826 for higher 16-bit resolution requirements. Evaluate AD9838 if digital synthesis functions are needed instead of CCD processing. Verify pinout and register compatibility for any substitute components.