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Driver with switchable gain

  • US 6,160,436 A
  • Filed: 03/31/1999
  • Issued: 12/12/2000
  • Est. Priority Date: 04/17/1998
  • Status: Expired due to Term
First Claim
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1. A transmission line driver operable in low and high frequency transmission modes, comprising:

  • low transmission frequency mode circuitry that receives a first input current and generates a first output current with a first current gain;

    high transmission frequency mode circuitry that receives a second input current, different from the first input current, and generates a second output current that is less than the first output current and with a second current gain that is less than the first current gain;

    whereinthe transmission line driver is responsive to a control signal designating the low transmission frequency mode to cause the low transmission frequency mode circuitry to generate the first output current and to the control signal designating the high transmission frequency mode to cause the high transmission frequency mode circuitry to generate the second output current.

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