hw7_sol - ECE 442 HW7 Solutions 1. a) The required total...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ECE 442 HW7 Solutions 1. a) The required total voltage gain is: v o , max v s , max = 1 V 100 mV = 10 V V Maximum total gain of single blocks is: v o 1 v s = v o 1 v i v i v s = G m v i ( R o 1 || R L ) v i v s R i 1 R i 1 + R S v s . 2 m ( 400 k || 4 k ) 150 k 150 k + 50 k = . 594 V V v o 2 v s = v o 2 i i i i v i v i v s = I sc i i ( R o 2 || R L ) i i v i / R i 2 v i v s R i 2 R i 2 + R S v s 10 ( 250 k || 4 k ) 1 30 k 30 k 30 k + 50 k = . 492 V V v o 3 v s = v o 3 i i i i v i v i v s = R m i i R L R o 3 + R L i i v i / R i 3 v i v s R i 3 R i 3 + R S v s 90 k 4 k 1 k + 4 k 1 5 k 5 k 5 k + 50 k = 1 . 31 V V Therefore, no single block can produce the required gain. b) The natural choice for a cascaded amplifier that needs to amplify voltage is to cascade a transconductance amplifier (whose input is voltage, output is amplified current) and a transresistance amplifier (whose input is current, output is amplified voltage)....
View Full Document

This note was uploaded on 02/21/2010 for the course ECE 442 taught by Professor Staff during the Spring '08 term at University of Illinois, Urbana Champaign.

Page1 / 5

hw7_sol - ECE 442 HW7 Solutions 1. a) The required total...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online