Title:
POWER EFFICIENT LINE DRIVER WITH QUADRUPLE POWER SUPPLY VOLTAGE SWING AND ACTIVE TERMINATION SYNTHESIS
Document Type and Number:
Japanese Patent JP2002176457
Kind Code:
A
Abstract:
To provide a differential line driver that has a quadruple power supply voltage swing, extends a loop length to a subscriber line, acts like an active impedance termination section and eliminates the need for a series termination resistor so as to save the transmission power by 6 dB.
The differential line driver includes a differential circuit that has a 1st input node, a 2nd input node, a 1st output node 52, a 2nd output node 54 and a power supply voltage node VDD, a 1:1 transformer 22 that has a 1st coil connected between the 1st output node 52 and the 2nd output node 54 and a center tap 50 connected to the power supply voltage node VDD.
Inventors:
HAYAT-DAWOODI KAMBIZ
KUMAR ANIL
CARVAJAL FERNANDO D
KUMAR ANIL
CARVAJAL FERNANDO D
Application Number:
JP2001261594A
Publication Date:
June 21, 2002
Filing Date:
August 30, 2001
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC
International Classes:
G06G7/12; H03H11/00; H04B3/02; H03K19/0175; H04L25/02; (IPC1-7): H04L25/02; H03K19/0175; H04B3/02
Attorney, Agent or Firm:
Akira Asamura (3 outside)
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