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LM2485 Datasheet 220v Triple Bias Clamp

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM2485 220V Triple Bias Clamp with G1 Blank Amplifier December 2004 LM2485 220V Triple Bias Clamp with G1 Blank.

General Description

The LM2485 is a triple channel clamp amplifier used to DC restore the AC coupled outputs of a DTV CRT driver and for cut-off adjustment.

The LM2485 also has an integrated blanking amplifier that can be used to drive the G1 grid of a CRT negative for vertical retrace blanking.

The blanking output has a selectable pulse amplitude of either 20VP-P or 40VP-P via the Pin 13 option.

Key Features

  • n n n n VCC capable of up to 220V VBB selectable to 8V or 12V via Pin 12 option Wide bias output voltage range of over 100V Inverted output pulse suitable for G1 blanking, selectable to 20VP-P or 40VP-P via Pin 13 option.

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