sumeet321
Newbie level 1
- Joined
- Sep 10, 2014
- Messages
- 1
- Helped
- 0
- Reputation
- 0
- Reaction score
- 0
- Trophy points
- 1
- Activity points
- 7
I have a differential input Vin1 and Vin2 to PMOS P1 and P2. Vin2 is constact (1.5V) and have a capacitor (0.5pF) below transistor P2. ISS is 1uA and gm of Vin1 is about 5u. P2 is connected via switch and I want to control the gain by turning on the P2 for certain time. But I give time 1us gain is not as expected. I am taking the output in between P2 and capacitor. I expect gain to be (gm x time /C). What is wrong in my calculation.