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MAX4111, MAX4121, MAX4221 緩沖驅(qū)動(dòng)

2008-10-06 12:59www.elecfans.co 本站我要評論（0）我要收藏

MAX4111, MAX4121, MAX4221 330MHz、緩沖驅(qū)動(dòng)視頻交叉點(diǎn)開關(guān)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關(guān)鍵特性

  • -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應(yīng)用/使用

  		•  廣播/HDTV級彩色信號多路復(fù)用
  		•  數(shù)據(jù)采集
  		•  圖形彩色信號切換
  		•  射頻與中頻路由
  		•  電信路由
  		•  視頻切換及交叉矩陣開關(guān)

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