Mei-Ping Pua

Graduation Semester and Year

2008

Language

English

Document Type

Thesis

Degree Name

Master of Science in Electrical Engineering

Department

Electrical Engineering

First Advisor

Howard Russell

Abstract

An improved high gain, precision, low sensitivity current mirror is designed around a feedback circuit. This mirror utilizes a buffered Widlar current mirror to drive the constant input reference current, two beta helpers to compensate for the loss of base current and an active load, and a feedback loop in the amplifier. This design provides a comparison node for detecting the input error signal. The output collector current is substantially equal to the input reference current when driving multiple transistor loads. The circuit has been fabricated with National's VIP10 process, which caters to the high gain bipolar technology. Measurement results obtained are a good reflection of the precision and low sensitivity to indicate a substantial agreement to the simulated results.

Disciplines

Electrical and Computer Engineering | Engineering

Comments

Degree granted by The University of Texas at Arlington

Download

Share

COinS