9.104 Consider the current-mirror-loaded MOS differential amplifier of Fig. 9.32(a) in two cases: (a) Current source I is implemented with a simple current mirror. (b) Current sourceIis implemented with themodifiedWilson current mirror shown in Fig. P9.104. Recalling that for the simple mirror RSS = ro QSand for the Wilson mirror R SS  gm7ro7ro5, and assuming that all transistors have the same  VA  and kW/L, show that for case (a) CMRR = 2VVOV A 2 and for case (b) CMRR = 2√2VVOV A 3 where V OV is the overdrive voltage that corresponds to a drain current of I/2. For kW/L = 4 mA/ V2, I = 160 μA, and  VA  = 5 V, find CMRR for both cases.

This slideshow requires JavaScript.

This content is for Premium members only.
sign up for premium and access unlimited solutions for a month at just 5$(not renewed automatically)


images - 9.104 Consider the current-mirror-loaded MOS differential amplifier of Fig. 9.32(a) in two cases: (a) Current source I is implemented with a simple current mirror. (b) Current sourceIis implemented with themodifiedWilson current mirror shown in Fig. P9.104. Recalling that for the simple mirror RSS = ro QSand for the Wilson mirror R SS  gm7ro7ro5, and assuming that all transistors have the same  VA  and kW/L, show that for case (a) CMRR = 2VVOV A 2 and for case (b) CMRR = 2√2VVOV A 3 where V OV is the overdrive voltage that corresponds to a drain current of I/2. For kW/L = 4 mA/ V2, I = 160 μA, and  VA  = 5 V, find CMRR for both cases.

already a member please login