For the questions below, assume the following device parameters:

K'n=μnCox=200 μA/V², K'p-μpCox-80 μA/V², |VLIN|= infinite

Vto,N=| Vto,P|= 0.5V, PHI= |20F|=0.85V for N and P, y=0.3 V⁰.5, λ=0.1 V-¹/n2) Diff-Amp: The PMOS transistors within the diff-amp in Fig 2 are designed to have gm=1.5mA/V at

120 μA. The drain resistors are designed at 12 kn. Finally, the current mirror of 1(b) is used as

the tail current.

a. Calculate the differential-mode gain of the circuit.

b. Calculate the common-mode gain of the circuit.

c.

Calculate the minimum Vdd that this circuit can support for an input common-mode

voltage of 1.8 V, including body effects./nM1

M3

Ⓒ

D

IREF

Vop

Vvp

R41

Fig. 2

M5

T

M2

M4

Vout

M4

Raz

M6