Bandwidth of comparator

[bsrivastava]

bandwidth comparator

All,
What shuld be the relation of bandwidth of comparator with the frequency of incoming pulse train and why?

thanks

 

[ysenthilece]

comparator bandwidth

for a comparator..or any circuit for tat matter the input waveform's frequency shld not exceed the bandwith of the circuit..if it exceeds ..distortion occurs

 

[bsrivastava]

comparator gain and bandwidth

Comparator bandwidth must be more than the freq of input pulse, but how much should it be (x1.5 or x2). and what is the reason.

 

[magnetra]

comparator bandwith

I think the bandwidth of a comparator is upon its propagation delay, which eventually determines the maximum usable input signal frequency without distortion/error.

Magnetra

 

[happy2005]

small bandwidth of comparator

A comparator is a high gain amplifier with hysteresis. Even very small voltage difference at the input should make comparator (amplifier) output high (or low)saturation. For this reason, amplifier gain should be high.
Additionally, amplifiers has certain bandwith. The gain is high in the bandwitdh frequencies only. For higher frequencies the amplifier gain decrease and so, comparator doesn't work properly and doesn't operate as a comparator.

 

[nandu_r]

bandwidth on a comparator

In simple words, it dependds on ur system requirements.
In case u need to just identify the incoming pulse, its delay should be less than the next pulse appear at the input.
As i know for comparators we generaly talk about delay rather than bandwidth

regards

 

[xwcwc1234]

bandwidth of a comparator

I think bandwidth is equal to delay for comparator. Both "delay" or "bandwidth" has same meaning.

 

[hojjat-kaveh]

propagation delay bandwidth comparator

I think bandwidth is equal to delay for comparator. Both "delay" or "bandwidth" has same meaning.

 

[MikeR]

bandwith oct

In classic design comparator consist of preamp and latch. Gain of preamp * tan(phase on fs/2) < V os latch