概述

The LT1204 is a 4-input video multiplexer designed to drive 75? cables and easily expand into larger routing systems. Wide bandwidth, high slew rate, and low differential gain and phase make the LT1204 ideal for broadcast quality signal routing. Channel separation and disable isolation are greater than 90dB up to 10MHz. The channel-to-channel output switching transient is only 40mVP-P, with a 50ns duration, making the transition imperceptible on high quality monitors.

A unique feature of the LT1204 is its ability to expand into larger routing matrices. This is accomplished by a patent pending circuit that bootstraps the feedback resistors in the disable condition, raising the true output impedance of the circuit. The effect of this feature is to eliminate cable misterminations in large systems.

The large input and output signal levels supported by the LT1204 when operated on ±15V supplies make it ideal for general purpose analog signal selection and multiplexing. A shutdown feature reduces the supply current to 1.5mA.

特点

0.1dB Gain Flatness > 30MHz

Channel Separation at 10MHz: 90dB

Input 40mV Switching Transient, Input Referred

?3dB Bandwidth, AV = 2, RL = 150?: 75MHz

Channel-to-Channel Switching Time: 120ns

Easy to Expand for More Inputs

Large Input Range: ±6V

0.04% Differential Gain, RL = 150?

0.06° Differential Phase, RL = 150?

High Slew Rate: 1000V/μs

Output Swing, RL = 400?: ±13V

Wide Supply Range: ±5V to ±15V

应用

Broadcast Quality Video Multiplexing

Large Matrix Routing

Medical Imaging

Large Amplitude Signal Multiplexing

Programmable Gain Amplifiers