Browse Prior Art Database

Low Value Current Source

IP.com Disclosure Number: IPCOM000084789D
Original Publication Date: 1976-Jan-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 21K

Publishing Venue

IBM

Related People

Radcliffe, JK: AUTHOR

Abstract

The circuit shown generates a current I2 from a source current I1 by matched transistors T1 and T2 and a resistor R2.

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Low Value Current Source

The circuit shown generates a current I2 from a source current I1 by matched transistors T1 and T2 and a resistor R2.

The resistor R2 is placed in series with the current source I1 where it is exposed to high currents. In this way, a small resistor R2 can be used.

It is noted that in an integrated circuit, it is easier to fabricate a relatively low resistance than a relatively high resistance.

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