AD890JP

Specialized ICS Overview

The AD890JP is a high-speed, precision channel processing element manufactured by Analog Devices Inc. It integrates two comparators and a reference voltage source on a single chip, designed for use in rigid disk drive data channels and other high-speed signal conditioning applications. The device operates from a single supply of 4.5V to 7V or dual supplies of ±2.25V to ±16.5V. Key specifications include a maximum propagation delay of 50ns, an input offset voltage of 1.5mV (max), and a typical CMRR of 95dB.

Specialized ICS Feature Summary

• High-speed precision comparator architecture with 50ns max propagation delay
• Wide supply voltage range: 4.5V–7V (single) or ±2.25V–±16.5V (dual)
• High common-mode rejection ratio (CMRR): 95dB typical
• Low input offset voltage: 1.5mV max
• Compatible with CMOS and TTL logic outputs
• Integrated internal reference voltage

Specialized ICS Applications

• Rigid disk drive data channel qualification
• Optical disk servo and data channel processing
• High-speed signal comparison in mixed-signal systems

Specialized ICS Procurement Notes

Verify the specific manufacturer part number against official Analog Devices documentation to confirm availability and revision status. Check for any product change notices (PCN) related to assembly sites or material declarations. Ensure that the 28-PLCC package dimensions match the target PCB footprint requirements before procurement.

Specialized ICS Selection Notes

Select this component when a wideband, precision channel processing element is required for data channel applications. Consider the 50ns propagation delay and 1.5mV input offset voltage limits for timing-critical designs. Verify that the operating temperature range meets the environmental constraints of the intended application.

Specialized ICS Part Context

The AD890 belongs to a family of channel processing elements from Analog Devices, which includes variants such as the AD891 and AD892. These devices are typically used in storage interface circuits where fast signal discrimination and noise immunity are critical. The AD890JP specifically denotes the plastic leaded chip carrier (PLCC) package variant.