AD9814KR

Overview

The AD9814KR 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 to a 14-bit A/D converter. The device supports 3-channel operation up to 10 MSPS and 1-channel operation up to 7 MSPS. It operates from a single +5 V supply with typical power consumption of 330 mW. The K-grade variant ensures an operating temperature range of 0°C to +70°C and is housed in a 28-lead SOIC package.

Feature Summary

• Integrates three independent channels with CDS, PGA, and offset adjustment for trilinear CCD signal conditioning.
• Includes a high-performance 14-bit ADC with guaranteed no missing codes and internal voltage reference.
• Supports flexible operation modes including 3-channel CDS, 3-channel SHA, and single-channel configurations.
• Features a 3-wire serial digital interface for programming gain, offset, and operating mode registers.

Applications

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

Procurement Notes

Verify the specific grade suffix against the manufacturer's ordering guide to confirm temperature range and performance specifications. Ensure compatibility with the required 28-lead SOIC package dimensions and thermal characteristics for the target PCB layout. Confirm that the digital I/O levels match the system's logic voltage requirements.

Selection Notes

Select this component when processing signals from trilinear CCD sensors requiring integrated CDS and programmable gain. Consider the 14-bit resolution and 10 MSPS throughput for high-quality image capture. Evaluate the power consumption constraints, as the device typically draws 330 mW. Verify that the application environment stays within the 0°C to +70°C operating range specified for the K-grade part.

Part Context

The AD9814KR belongs to the AD9814 family of complete CCD/CIS signal processors manufactured by Analog Devices. It shares the same functional block diagram and core specifications as the J-grade version but is qualified for commercial temperature ranges. The KR suffix specifically denotes the 0°C to +70°C operating range and the 28-lead SOIC package option.

Replacement Considerations

The AD9814JR is a direct pin-compatible substitute with identical functionality but a different temperature grade. No other direct replacements are documented in the provided datasheet.