Hey,
I've already design a three stages amplifier by using mic863 and all stages gain as 55.5, 11 and 1 and I'm using +/-2.5V dual power supply for this mic863, when i give 8mVp-p as input by varying frequency from 1KHz to 50KHz i notice that from 5 KHz frequency to 10khz frequency i got maximum output as around 450mV for 1 stages , 4.8V for 2nd stages and 4.8V for last stages . so i think it's bandwidth is between 6khz to 10khz and in this I'm also interested in 5.6khz frequency , but i want to that how i can set this type of bandwidth ,
i think it's set by using a equation bandwidth = GBP/Gain, 350KHz/ 55.5 so my bandwidth is around 6KHz correct? please tell me if it's correct or not and if not than tell me how to calculate.
now , i want to design a amplifier using 3 stages of 24, 20 and 11 as i want gain around 5280 to amplify 0.346mV signal up tp 1.5 V , also I'm interested in 32.768KHz frequency so as mention in case 1 i want that my output should come maximum above 30 or 28 khz frequency or it should properly amplify a 0.346mV signal with frequency 32.768khz to 1.5V at output), so i think as per my knowledge with 750KHz GBP i can do this
so please let me know the proper calculation that how to do it , I'm really confused with and also suggest me which op.amp ic will suitable as per my requirement that a signal with 32.768khz with 0.346mV will come around 1.84 or 1.5V with same frequency at last stages. if any further information are required you can ask me