HW8 - 15.1 a ( 29 I C = F I E = 1 2 F F + 1 12- V BE R EE =...

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Unformatted text preview: 15.1 a ( 29 I C = F I E = 1 2 F F + 1 12- V BE R EE = 1 2 100 101 12- 0.7 2.7 x 10 5 = 20.7 A | V C = 12- 3.3 x 10 5 I C = 5.17 V V CE = V C- - 0.7 V ( 29 = 5.87 V | Q- Point = 20.7 A , 5.87 V ( 29 b ( 29 A dd = - g m R C = - 40 20.7 A ( 29 330 k ( 29 = - 273 R id = 2 r = 2 o V T I C = 2 100 0.025 V ( 29 20.7 A = 243 k | R od = 2 R C = 660 k c ( 29 A cc = - o R C r + o + 1 ( 29 2 R EE = - 100 330 k ( 29 122 k + 2 101 ( 29 270 k = - 0.604 A dd = - g m R C 2 = - 137 | A cd = A cc | CMRR =- 137- 0.604 = 227 or 47.1 dB (very low) R ic = r + o + 1 ( 29 2 R EE 2 = 122 k + 2 101 ( 29 270 k 2 = 27.3 M 15.14 I C = F I E = 150 151 15- 0.7 2 150 k ( 29 = 47.4 A | V EC = 0.7- - 15 + 2 x 10 5 I C ( 29 = 6.22 V Q - points : 47.4 A , 6.22 V ( 29 | g m = 40 I C = 1.90 mS | r = 150 g m = 79.0 k A dd = - g m R C = - 1.90 mS 200 k ( 29 = - 380 A cc = - o R C r + o + 1 ( 29 2 R EE = - 150 200 k ( 29 79.0 k + 151 300 k ( 29 = - 0.661 R id = 2 r = 158 k | R ic = r + o + 1 ( 29 2 R EE 2 = 79.0 k + 151 300 k ( 29 2 = 22.7 M For a differential output : A dm = A dd = - 380 | A cm = 0 | CMRR = For a single - ended output : A dm = A dd 2 = - 190 | A cm = A cc = - 0.661 CMRR =- 190- 0.661 = 287 or 49.2 dB 15.17 I C = F I EE 2 = 80 81 10 A 2 = 4.94 A | V EC = 0.7- - 3 + 3.9 x 10 5 I C ( 29 = 1.77 V Q - points : 4.94 A , 1.77 V ( 29 | g m = 40 I C = 0.198 mS | r = 80 g m = 404 k A dd = - g m R C = - 0.198 mS 390 k ( 29 = - 77.2 A cc = - o R C r + o + 1 ( 29...
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This note was uploaded on 01/12/2012 for the course ECE 255 taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.

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HW8 - 15.1 a ( 29 I C = F I E = 1 2 F F + 1 12- V BE R EE =...

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