Stereo Pre-amplifier + Tone Control Circuit based TDA1524A

Preamplifier + tone control circuit based TDA1524A

This is the circuit diagram of stereo preamplifier which built based a compact IC TDA1524A. Tone control circuit module is included in this preamplifier circuit, so you can connect the output channels directly to stereo power audio amplifier circuit.

Components List

R1, R2 = 220R
R3, R4 = 4K7
R5 = 2K2
R6 = 1K
C1, 2, 7, 8, 17 = 10uF/25V
C3, 4 = 47nF
C5, 6 = 15nF
C9 = 220nF
C10 = 100uF/25V
C11, 12, 13, 14, 16 = 100nF
C15 = 1000uF/35V
C18, 19 = 10nF
IC1 = TDA1524A
IC2 = LM7812
P1 = 50k linear switch pot
P2, 3, 4 = 50k linear pot
D1 = Diode 1N4004
L1 = LED

Circuit Features:

  • Simple construction
  • Few external components
  • Low noise and distortion
  • Switchable loudness
  • Will drive most power amplifier

Pre-amplifier Specifications:

  • D.C. Input : 15V DC supply or 12V battery at 50 mA.
  • Gain 20 dB max.
  • Maximum output : > 3 V RMS
  • Maximum input : > 300 mV, G = 20 dB  ; > 3V RMS, G = 0dB
  • Input: Z > 10 k ohm
  • Output: Z < 300 ohm
  • Frequency resp. : < 10 Hz to > 50 kHz  ; + / – 1 dB
  • THD at 1kHz : < 0.1 % at 1V output
  • S/N ratio : > 85 dB, G = 0 dB
  • Bass boost/cut ~ 15 dB at 50 Hz
  • Treble boost/cut ~ 15 dB at 15 kHz

Download the application notes of this stereo preamplifier circuit here
Download the TDA1524A datasheet here

Incoming search terms:

Tags: preamplifier tone control circuit stereo preamplifier circuit TDA1524A circuit TDA1524A datasheet TDA1524A preamplifier

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