Browse Prior Art Database

Unconditionally Stable Long Line Receiver

IP.com Disclosure Number: IPCOM000082462D
Original Publication Date: 1974-Dec-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Colao, E: AUTHOR

Abstract

Unconditional stability is an important feature to assure that a wide variation of type and/or length of the line, connected to the receiver input will not produce oscillations.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Unconditionally Stable Long Line Receiver

Unconditional stability is an important feature to assure that a wide variation of type and/or length of the line, connected to the receiver input will not produce oscillations.

The receiver depicted in the drawing is rendered unconditionally stable, by utilizing the common P-type base diffusion available between the two base contacts of transistors T1 and T2. The larger base resistance of the input transistor T3 increases the real part of the base input impedance of T3.

The receiver circuit includes transistors T4 and T5 functioning as a current switch. Transistor T3 performs an emitter-follower function. Transistor T7 and resistors R6 and R7 provide a reference voltage to the current switch. The output signal at the collector of T5 is translated by the output transistor T6.

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]