LT1227MJ8

Video Amps And Modules Overview

The LT1227MJ8 is a high-speed video current feedback amplifier manufactured by Analog Devices. It features a 140MHz bandwidth at AV=2 with a 150W load and an 1100V/ms slew rate. The device provides a 30mA output drive current, low differential gain of 0.01%, and differential phase of 0.01°. It operates on a wide supply range from –2V to –15V, drawing 10mA supply current in normal mode and less than 250µA in shutdown mode. The J8 package is an 8-lead ceramic DIP.

Video Amps And Modules Feature Summary

• High-speed current feedback architecture maintaining consistent bandwidth across various voltage gains
• Integrated shutdown mode for high input-to-output isolation and reduced power consumption
• Low differential gain and phase distortion suitable for precision video signal processing
• Robust output stage capable of driving low impedance loads such as video cables

Video Amps And Modules Applications

• Video amplifiers
• Cable drivers
• RGB amplifiers
• Test equipment amplifiers
• Buffers for driving mixers

Video Amps And Modules Procurement Notes

Verify the specific J8 ceramic package designation when sourcing replacements, as plastic variants exist. Confirm that the component meets the required military or extended temperature specifications if operating outside standard ranges. Ensure logic levels for the shutdown pin interface are compatible with the positive supply rail requirements.

Video Amps And Modules Selection Notes

Select this component for applications requiring high bandwidth stability independent of gain settings. Consider the current feedback topology for superior slew rate performance compared to voltage feedback alternatives. Evaluate the shutdown feature necessity for system power management or multiplexing configurations.

Video Amps And Modules Part Context

The LT1227MJ8 belongs to the LT1227 family of video current feedback amplifiers. It utilizes Linear Technology's proprietary complementary bipolar process. Related parts include dual and quad versions like the LT1229 and LT1230, offering similar performance characteristics in multi-channel configurations.

Video Amps And Modules Replacement Considerations

LT1227CS8

Video Amps And Modules FAQ

How does the shutdown pin function?

The shutdown pin interfaces to open collector or open drain logic. Pulling the pin low switches the device to a high impedance, low current mode with approximately 70dB isolation at 10MHz.

What is the maximum capacitive load capability?

The amplifier can drive capacitive loads directly if the appropriate feedback resistor value is selected according to the Maximum Capacitive Load vs Feedback Resistor characteristic curves.