Level shifter as diode connected MOS

Status
Not open for further replies.
I

ICdesignerbeginner

Member level 5
Joined
Nov 22, 2017
Messages
86
Helped
1
Reputation
4
Reaction score
2
Trophy points
8
Activity points
729
Hello

I have seen in many research articles about diode connected MOS as level shifter. How diode connected mos used as level shifter. Can some one help me I am new to this field of IC design.
 

When the signal is current, a diode drops (or raises) voltage
along the loop. Simple enough.

Not like it does anything much, actively, to "shift" a level
all by itself. More like it's along for the ride and you pick
a tap point.
 

Its like if I have a voltage lets say 0.5 V then by using a level shifter its going to increase the voltage to 0.5+0.7= 1.2 volts. Am I right?
 

Yes, but the "diode" is more like "along for the ride"
and the current source above, sink below do all the
work.

It's likely that a source follower and another load
will be a superior level shift in many cases (due to
high Zin, low Zout attributes as many level shifts
want more drive capability and can't take it from
the gain-stage limited current bias).
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…