i have to work on the multistage audio amplifier but i feel uncmfortable in designing the circuit.
The design requirements are given below:
please anyone help me out in deigning the circuit.
thanks.
The design requirements are given below:
- Av ≥ 2000 when driving a 100 ohm load, with a source resistance of 1 Kohm at 1 KHz.
- Rin ≥ 15 K with RL = 100 ohms at 1 KHz
- Lower cutoff frequency ≤ 10 Hz with RL = 100 ohms
- Upper cutoff frequency ≥ 25 KHz with RL = 100 ohms
- 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.
- 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.
- Nice loud output from the speaker with no audible distortion.
- Supply voltage = ± 15 V (dual supply).
- All the input sources should be AC coupled.
- Output DC voltage ≤ 50 mV.
- The output swing with a 100 ohm load ≥ 20 V pk-pk
please anyone help me out in deigning the circuit.
thanks.