Specifications for comparator of class-D amplifier

Status
Not open for further replies.
L

lqy

Member level 3
Joined
Dec 21, 2001
Messages
67
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
468
Comparator of Class-D

While designing a class-d amplifier for audio application, what are the specifications of the comparator we should keep in mind.
 

Comparator of Class-D

I think that rail-to-rail input is not the requirement, because the gain of the PWM modulator is decided by VCC/Vtri, if Vtri is not from rail-to-rail, we don't need a rail-to-rain input.
 

Comparator of Class-D

low offset, bigger gain. Also pay attention to SR
 

Re: Comparator of Class-D

sunking said:
low offset, bigger gain. Also pay attention to SR
Click to expand...

I think bigger gain is very helpful, but I don't konw the exact value, could you please tell me how much is enough?
 

Re: Comparator of Class-D

I think response time is also extremely important (especially with faster switching speeds) and hysteresis to prevent multiple triggering caused by noise.
 

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…