AD8142ACPZ-R7

Overview

The AD8142ACPZ-R7 is a triple, low-cost differential driver manufactured by Analog Devices Inc. It operates on a single 5 V or split supply and features a fixed gain of 2 to compensate for line termination attenuation. The device includes integrated sync-on-common-mode circuitry for transmitting balanced horizontal and vertical video sync signals over common-mode channels. It utilizes an internal common-mode feedback network to provide output amplitude and phase matching, achieving a balance error of −50 dB at 50 MHz. The component supports differential-to-differential or single-ended-to-differential operation with high isolation between amplifiers.

Feature Summary

• Triple differential drivers optimized for RGB signals with fast slew rate and settling time
• Integrated common-mode feedback loop providing output amplitude and phase matching
• Unique sync-on-common-mode feature for transmitting balanced video sync signals
• Disable feature producing high-Z outputs for line isolation and multiplexing

Applications

• Keyboard-video-mouse (KVM) networking
• Video distribution systems
• Digital signage
• Security cameras

Procurement Notes

Verify the specific ordering suffix R7 against the manufacturer's official documentation to confirm reel packaging specifications. Ensure compatibility with the required operating temperature range of −40°C to +85°C. Confirm that the LFCSP-24 package dimensions align with the target PCB layout constraints. Cross-reference the pin configuration with the datasheet to validate signal routing for the sync-on-common-mode inputs.

Selection Notes

Select this component when a triple differential driver with integrated sync embedding is required for high-resolution video applications. The fixed gain of 2 simplifies circuit design by compensating for cable attenuation without external resistors. Consider the AD8142 over the AD8141 if the system requires transmission of balanced horizontal and vertical sync signals on the common-mode lines. Evaluate the space-saving 4 mm × 4 mm LFCSP package for dense board layouts.

Part Context

The AD8142 is part of the AD814x family of low-cost, triple differential drivers designed for wideband video applications. It shares architectural similarities with the AD8141 but adds unique sync-on-common-mode functionality. The device is manufactured using a cost-effective CMOS process, offering high performance metrics such as a 255 MHz large signal bandwidth and 1150 V/μs slew rate. It is intended to be used in conjunction with receivers like the AD8145 or equalizers like the AD8123.

Replacement Considerations

The AD8141ACPZ is a compatible alternative within the same family but lacks the integrated sync-on-common-mode circuitry found in the AD8142. If sync embedding is not required, the AD8141 may serve as a direct functional substitute. Verify that the pinout remains identical to ensure mechanical interchangeability.