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EL2090 - 100MHz DC-Restored Video Amplifier

General Description

TEMP MIN TYP IS Total Supply Current VIDEO AMPLIFIER SECTION (NOT RESTORED) Full 14 VOS Input Offset Voltage IB+ +VIN Input Bias Current IB- -VIN Input Bias Current ROL Transimpedance AVOL Open-Loop Voltage Gain; VOUT = ±2V VO Output Voltage Swing VS = ±15V; RL = 2kΩ VS = ±5V; RL = 1

Key Features

  • Complete video level restoration system.
  • 0.01% differential gain and 0.02° differential phase accuracy at NTSC.
  • 100MHz bandwidth.
  • 0.1dB flatness to 20MHz.
  • Sample-and-hold has 15nA typical leakage and 1.5pC charge injection.
  • System can acquire DC correction level in 10µs, or 5 scan lines of 2µs each, to 1/2 IRE.
  • VS = ±5V to ±15V.
  • TTL/CMOS hold signal.

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® cN1o-On8t8Ra8DcE-tIaOCNotOBTauESMrSROTMheSLEcIEeLNhTenDoEtirEcPwDaRlwRSOwEuD.PpiUnpLCtoAeTrrCtsEiClM.ecnEotNmeTr/tasAtcugust 1995, Rev. A EL2090 FN7040 100MHz DC-Restored Video Amplifier The EL2090 is the first complete DCrestored monolithic video amplifier sub-system. It contains a very highquality video amplifier and a nulling sample-and-hold amplifier specifically designed to stabilize video performance. When the HOLD logic input is set to a logic 0 during a horizontal sync, the sample-and-hold amplifier may be used as a general-purpose op-amp to null the DC offset of the video amplifier. When the HOLD input goes to a logic 1 the sample-and-hold stores the correction voltage on the hold capacitor to maintain DC correction during the subsequent scan line.