For this 2-bit DAC using current sources, M1 and M2 are identical, the current through Rref is 0.2 mA, R1=5k, R2=20k. Find R3 (in kOhms) so that Vout is 2.5V when DO turns on M4 (and M5 is off). Assume VDS for M4 is negligible when it is on. VREF VREF M4 M1 M2 DO VREF Rref VOUT M5 M3 D1 RS R2
For this 2-bit DAC using current sources, M1 and M2 are identical, the current through Rref is 0.2 mA, R1=5k, R2=20k. Find R3 (in kOhms) so that Vout is 2.5V when DO turns on M4 (and M5 is off). Assume VDS for M4 is negligible when it is on. VREF VREF M4 M1 M2 DO VREF Rref VOUT M5 M3 D1 RS R2
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Question
![For this 2-bit DAC using current sources, M1 and M2 are identical, the
current through Rref is 0.2 mA, R1=5k, R2=20k. Find R3 (in kOhms) so that
Vout is 2.5V when DO turns on M4 (and M5 is off). Assume VDS for M4 is
negligible when it is on.
VREF
VREF
M4
M1
M2
DO
VREF
Rref
- VOUT
M5
M3
D1
RS
R2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb8530e82-7d31-4442-ada5-dc030786f27d%2F7dd0d4f5-0562-4cb0-a867-e01417ae8af5%2Fezxchac_processed.png&w=3840&q=75)
Transcribed Image Text:For this 2-bit DAC using current sources, M1 and M2 are identical, the
current through Rref is 0.2 mA, R1=5k, R2=20k. Find R3 (in kOhms) so that
Vout is 2.5V when DO turns on M4 (and M5 is off). Assume VDS for M4 is
negligible when it is on.
VREF
VREF
M4
M1
M2
DO
VREF
Rref
- VOUT
M5
M3
D1
RS
R2
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