MAX4111, MAX4121, MAX4221 缓冲驱动

MAX4111, MAX4121, MAX4221 330MHz、缓冲驱动视频交叉点开关芯片

 The MAX4111/MAX4121/MAX4221 wideband video switches are optimized for high-definition, broadcast-quality, composite (HDTV, NTSC, PAL, SECAM, and RGB) video switching arrays. Their open-loop buffer amplifiers offer 0.1dB gain flatness to 150MHz. They operate from ±5V supplies and feature differential phase and gain error of only 0.01°/0.01%, respectively. The ultra-low switching glitch (13mV) is positive to avoid confusion with any sync pulse.

Ideal as building blocks in large arrays, these devices feature a constant, high input impedance and a disable function that puts the outputs into a high-impedance state and reduces the operating current to only 250µA. The open-loop architecture allows the outputs to drive capacitive loads without oscillation. Other key features include -92dB crosstalk and -78dB isolation (MAX4121).

The MAX4111/MAX4121/MAX4221 are offered in narrow plastic DIP and SO packages. See the table below for key features:

 

MAX4111, MAX4121, MAX4221关键特性

-3dB Bandwidth of 330MHz

0.1dB Gain Flatness of 150MHz

700V/µs Slew Rate

0.01°/0.01% Differential Phase/Gain

Low Power: 5.5mA Max

-92dB Crosstalk and -78dB Off Isolation at 30MHz

High-Z Outputs when Disabled

3pF Input Capacitance

Ultra-Low Switching Glitch

On-Board Control Logic

MAX4111, MAX4121, MAX4221应用/使用

	广播/HDTV级彩色信号多路复用
	数据采集
	图形彩色信号切换
	射频与中频路由
	电信路由
	视频切换及交叉矩阵开关