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a. In what mode does M1 operate and why? b. Find the relationship between I, and IREF in terms of the MOSFET parameters. c. Find VGs if IREF= 10mA, W,= 10µm, and L, = 1µm. %3D %3D

a. In what mode does M1 operate and why? b. Find the relationship between I, and IREF in terms of the MOSFET parameters. c. Find VGs if IREF= 10mA, W,= 10µm, and L, = 1µm. %3D %3D

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Current Mirror: Consider the circuit shown below. Assume that both of the transistors are matched, meaning: 1) K„' is the same for both devices M1 and M2, and is equal to ImA/V²; 2) Vr = 0.5V for both M1 and M2. Recall that K= K,' (W/L), where W is the width and L is the length of the MOSFET. Further assume that Vpp = 3V and Vo is large enough that M2 operates in the saturation regime. VDDO Vo IREF M1 w, M2 L2
Transcribed Image Text:Current Mirror: Consider the circuit shown below. Assume that both of the transistors are matched, meaning: 1) K„' is the same for both devices M1 and M2, and is equal to ImA/V²; 2) Vr = 0.5V for both M1 and M2. Recall that K= K,' (W/L), where W is the width and L is the length of the MOSFET. Further assume that Vpp = 3V and Vo is large enough that M2 operates in the saturation regime. VDDO Vo IREF M1 w, M2 L2
a. In what mode does M1 operate and why? b. Find the relationship between I, and IREF in terms of the MOSFET parameters. c. Find VGs if IREF= 10mA, W;= 10µm, and L, = 1µm. d. Find Io under the conditions in part (c) if W2= 20µm and L,= 1µm. What is the minimum value for Vo to ensure M2 is in saturation under the conditions of part (d)? е.
Transcribed Image Text:a. In what mode does M1 operate and why? b. Find the relationship between I, and IREF in terms of the MOSFET parameters. c. Find VGs if IREF= 10mA, W;= 10µm, and L, = 1µm. d. Find Io under the conditions in part (c) if W2= 20µm and L,= 1µm. What is the minimum value for Vo to ensure M2 is in saturation under the conditions of part (d)? е.
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