AD9814JRRL

Overview

The AD9814JRRL is a complete analog signal processor for CCD imaging applications, featuring a 3-channel architecture designed to sample and condition outputs from trilinear color CCD arrays. It integrates input clamps, Correlated Double Samplers (CDS), offset DACs, and Programmable Gain Amplifiers (PGA) multiplexed into a high-performance 14-bit A/D converter. The device operates at conversion rates up to 10 MSPS in 3-channel mode and 7 MSPS in 1-channel mode. It supports programmable gain from 1x to 5.8x and offers a programmable offset range of ±300 mV. Powered by a single +5 V supply, it typically consumes 330 mW and is housed in a 28-lead SOIC package.

Feature Summary

• Integrates three independent channels with input clamp, CDS, offset DAC, and PGA before multiplexing to a 14-bit ADC.
• Supports flexible operation modes including 3-channel and 1-channel configurations with selectable CDS or Sample-and-Hold functionality.
• Features a 3-wire serial digital interface for programming gain, offset, and operating modes via internal registers.
• Includes an internal voltage reference and input clamp circuitry to condition CCD signals within the linear input range.

Applications

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

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified secondary market suppliers. Request original manufacturer datasheets and test reports to confirm specifications. Inspect physical packaging for integrity and check for signs of handling damage. Ensure the part number matches the exact suffix requirements for your specific application needs.

Selection Notes

Select this component when processing trilinear CCD sensor outputs requiring integrated signal conditioning. Choose based on required channel count (1 or 3) and maximum pixel rate (up to 10 MSPS). Consider the 14-bit resolution and programmable gain/offset capabilities for dynamic range adjustment. Verify power supply compatibility with the specified +5 V requirement and thermal constraints of the 28-lead SOIC package.

Part Context

The AD9814 is part of Analog Devices' specialized signal processing family for imaging applications. It serves as a dedicated front-end processor for CCD sensors, replacing discrete amplifier and sampling circuits. The JRRL suffix indicates a reel-packaged version of the standard AD9814JR, optimized for automated surface-mount assembly processes in manufacturing environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative CCD signal processors based on pin compatibility, resolution, and channel count if direct replacement is required.