Is it possible to increase the bandwidth of a high-gain amplifier by using tow lower gain amplifiers?

 

Hello,

What amplifiers did you have in mind?
Transistor or opamp?

Can you post a schematic of what you have upto now?

Bertus

 

Take the square root of the gain of the amplifier you have now. Use the resulting value as the gains for the two new amplifiers.

 

For op amp types the gain bandwidth product is quite close to a constant for any given op amp. See the spec sheet for this number.

 

A TL071 opamp has its frequency response drop above 3.1kHz when its gain is 1000.
If two are used, each with a gain of only 31.6 (but then their total gain is 1000), their frequency response drops above 50kHz.