AD9822JRRL

Overview

The AD9822JRRL is a complete analog signal processor for CCD imaging applications, featuring a 3-channel architecture designed to sample and condition outputs of trilinear color CCD arrays. It integrates input clamps, correlated double samplers (CDS), offset DACs, programmable gain amplifiers (PGA), and a high-performance 14-bit ADC. The device operates from a single 5 V power supply with typical power consumption of 385 mW. It supports 3-channel operation up to 15 MSPS and 1-channel operation up to 12.5 MSPS. The digital output is multiplexed into an 8-bit word accessed via two read cycles. Internal registers are programmed through a 3-wire serial interface.

Feature Summary

• Integrates three independent channels with input clamp, CDS, offset DAC, PGA, and 14-bit ADC
• Supports both Correlated Double Sampling (CDS) and Sample-and-Hold (SHA) modes
• Features 1-6x programmable gain and ±350 mV programmable offset per channel
• Includes internal voltage reference and 3-wire serial digital interface for configuration

Applications

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

Procurement Notes

Verify the specific ordering suffix JRRL against current manufacturer documentation to confirm package type and reel specifications. Confirm RoHS compliance status and lead-free availability as manufacturing processes may evolve. Check for end-of-life notifications or obsolescence notices prior to finalizing procurement plans.

Selection Notes

Select this component for trilinear CCD applications requiring integrated signal conditioning. Ensure system requirements align with the 14-bit resolution and 15 MSPS maximum sampling rate. Verify that the 5 V single-supply operation fits the system power budget. Consider the 28-lead SOIC package dimensions for PCB layout constraints.

Part Context

The AD9822 belongs to Analog Devices' family of CCD/CIS signal processors. It serves as an analog front-end solution, bridging image sensors and digital processing units. The JRRL variant specifically denotes the tape and reel packaging option within the standard 28-lead SOIC form factor, facilitating automated surface-mount assembly.

Replacement Considerations

Consult official Analog Devices documentation for qualified replacement part numbers. Verify pin compatibility and electrical parameter equivalence before substitution.