LT1251CS#TRPBF

Video Amps And Modules Overview

The LT1251CS#TRPBF is a 40MHz video fader and DC gain controlled amplifier manufactured by Analog Devices Inc. It features a 300V/μs slew rate, 40mA output current, and operates on supplies from ±2.5V to ±15V. The device provides accurate linear gain control with ±1% typical accuracy and low distortion of 0.01%. It includes internal circuitry for fast control path response and eliminates off-channel feedthrough at extreme control levels.

Video Amps And Modules Feature Summary

• Provides accurate linear gain control with constant gain across temperature variations
• Features high bandwidth and fast slew rate for high-speed video signal processing
• Includes internal circuitry to eliminate off-channel feedthrough at zero and full scale

Video Amps And Modules Applications

• Composite video gain control
• RGB and YUV video gain control
• Video faders and keyers
• Gamma correction amplifiers
• Audio gain control and faders

Video Amps And Modules Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the CS designation corresponds to the commercial temperature range specifications. Ensure the component matches the exact manufacturer part number to guarantee compatibility with design requirements.

Video Amps And Modules Selection Notes

Select this component for applications requiring electronically variable gain in video or audio systems. Consider the LT1256 if a fully linear control range without the on/off feature is needed. Evaluate supply voltage constraints as the device supports both single and split supply configurations.

Video Amps And Modules Part Context

This part belongs to the LT1251/LT1256 series of current feedback amplifiers designed for video applications. It integrates two inputs and one output with a linear control circuit to manage signal contribution. The series is optimized for broadcast quality video systems requiring precise gain adjustment.

Video Amps And Modules Replacement Considerations

LT1256CS#TRPBF

Video Amps And Modules FAQ

What is the difference between the LT1251 and LT1256?

The LT1251 includes internal circuitry that sets one input completely off and the other on at extreme control levels to eliminate feedthrough. The LT1256 operates linearly over the complete control range without this feature.

How does the control voltage affect the gain?

The control voltage determines the ratio of contribution from each input to the output. For the LT1251, voltages below 2% or above 98% of the full-scale voltage result in one input being fully off and the other fully on.