Hi to every body,

Im´m working on a new project, I need to amplificate the output signal of a sensor.
I have asembled a lot of different amplifier configuration but I ´didnt find the correct configuration I think that the problem is the op amp taht i had used (op270, tlv 2262 ...).

This is what I need:

an op amp with linear amplification betwin 10 hz to 20khz (the sensor is an electret microphone)
Vcc must be like 0-5v or something like this. It will be a portable device, and I can´t work with negative Vcc.

many thanks for your help

Aren

 

OP270
GBW = 6Million
Slew rate 1.7 V/uS
SR = 2 Pi Vp F
Vp =< 2.5 volts
Your limit with the OP270 is 108 KHz.
You are barking at the wrong tree.
Can you post a schematic of what did not work?
Then maybe I can figure out why.

 

Thank you very much #12 as you told I have enaf leneality woth all of this op amps, I was wrong interpretation of the data sheets.

Many thanks