I HAVE MADE A CIRCUIT TO MEET THE FOLLOWING SPECS
1. Av ≥ 2000 when driving a 100 ohm load, with a source resistance of 1 Kohm at 1 KHz. .
2. Rin ≥ 15 K with RL = 100 ohms at 1 KHz
3. Lower cutoff frequency ≤ 10 Hz with RL = 100 ohms
4. Upper cutoff frequency ≥ 25 KHz with RL = 100 ohms
5. Volume/gain control to vary the gain of the amplifier from ≈ 0 to 2000 with RL = 100 ohms. You will require a potentiometer/variable resistor to vary the gain. While varying the gain of the amplifier, the lower and upper cutoff frequencies at any intermediate gain should meet the above requirements.
6. Must be able to accept input either from a microphone or from music player through a male jack. Must be able to drive a speaker.
7. Nice loud output from the speaker with no audible distortion.
8. Supply voltage = ± 15 V (dual supply). You should design and build your own DC power supply. All the input sources should be AC coupled.
10. Output DC voltage ≤ 50 mV.
11. The output swing with a 100 ohm load ≥ 20 V pk-pk
The final output stage (the one that drives the speaker) must be a Class AB power amplifier.
HOWEVER, MY CIRCUIT IS NOOT MEETING ALL THE DEMANDS. I HAVE TO MAKE A COMPROMISE ON EITHER TO HAVE THE REQUIRED GAIN OR THE REQUIRED BANDWIDTH.
PLEASE EDIT MY CIRCUIT AND HELP ME OUT..
THANX
1. Av ≥ 2000 when driving a 100 ohm load, with a source resistance of 1 Kohm at 1 KHz. .
2. Rin ≥ 15 K with RL = 100 ohms at 1 KHz
3. Lower cutoff frequency ≤ 10 Hz with RL = 100 ohms
4. Upper cutoff frequency ≥ 25 KHz with RL = 100 ohms
5. Volume/gain control to vary the gain of the amplifier from ≈ 0 to 2000 with RL = 100 ohms. You will require a potentiometer/variable resistor to vary the gain. While varying the gain of the amplifier, the lower and upper cutoff frequencies at any intermediate gain should meet the above requirements.
6. Must be able to accept input either from a microphone or from music player through a male jack. Must be able to drive a speaker.
7. Nice loud output from the speaker with no audible distortion.
8. Supply voltage = ± 15 V (dual supply). You should design and build your own DC power supply. All the input sources should be AC coupled.
10. Output DC voltage ≤ 50 mV.
11. The output swing with a 100 ohm load ≥ 20 V pk-pk
The final output stage (the one that drives the speaker) must be a Class AB power amplifier.
HOWEVER, MY CIRCUIT IS NOOT MEETING ALL THE DEMANDS. I HAVE TO MAKE A COMPROMISE ON EITHER TO HAVE THE REQUIRED GAIN OR THE REQUIRED BANDWIDTH.
PLEASE EDIT MY CIRCUIT AND HELP ME OUT..
THANX
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