Stk413-430 Circuit Diagram -

The datasheet recommends a split supply (dual polarity). A simple unregulated linear supply is sufficient.

Inverting input connections used to establish system loop gain and stabilize overall frequency linearity. +VCCpositive cap V sub cap C cap C end-sub −VCCnegative cap V sub cap C cap C end-sub

IN2(“Audio Input (Right)”) --> C_IN2(“C_IN

: The module is noted for high-quality sound reproduction with a Total Harmonic Distortion (THD) typically less than 0.1% , ensuring clean and accurate audio. Reliability : It features built-in protection circuits stk413-430 circuit diagram

The THD specification of 0.02% at 1W showcases the component's ability to reproduce clean, clear audio across the audible spectrum.

Below is the standard pin assignment for this module. Please note that this is based on the general layout for similar STK4xxx series ICs; it is highly recommended to verify with a manufacturer's datasheet for exact configurations, as different manufacturers' substitutions can vary.

The table below, adapted from a compilation of STK-series ICs, provides a useful point of reference. However, note that the STK413-430 is more powerful, with sources indicating it is a operating on a split power supply. This means it can deliver up to 20 Watts of power per channel into a standard 8-ohm speaker load. The datasheet recommends a split supply (dual polarity)

Features large, complementary power Bipolar Junction Transistors (BJTs) arranged in a push-pull configuration to deliver high current to the speakers. Pin Configuration and Description

Traditional Class AB amplifiers operate with a static voltage rail, dissipating excess energy as heat when handling low-volume signals. The STK413-430 mitigates this waste through a multi-stage approach:

. Connected from the speaker output pins back to the feedback pins. Rated around +VCCpositive cap V sub cap C cap C

The STK413-430 is robust but vulnerable to overheating, shorted outputs, or rail loss.

| Pin No. | Symbol | Function/Description | | :------ | :------------ | :------------------------------------------------------ | | 1 | GND (SIGNAL) | Signal Ground (Separate from power ground) | | 2 | +IN (R-CH) | Non-inverting input for the Right Channel | | 3 | GND (SIGNAL) | Signal Ground | | 4 | -IN (R-CH) | Inverting input (for feedback) for the Right Channel | | 5 | GND (POWER) | Power Ground (for output stage) | | 6 | OUT (R-CH) | Speaker Output for the Right Channel | | 7 | +VCC | Positive Power Supply Rail (Typically +28V to +45V) | | 8 | -VCC / VEE | Negative Power Supply Rail (Typically -28V to -45V) | | 9 | GND (POWER) | Power Ground | | 10 | GND (SIGNAL) | Signal Ground | | 11 | -IN (L-CH) | Inverting input (for feedback) for the Left Channel | | 12 | GND (SIGNAL) | Signal Ground | | 13 | +IN (L-CH) | Non-inverting input for the Left Channel | | 14 | VREG / MUTE | Regulated voltage output or Mute Control (often left unconnected) | | 15 | -OUT | (May be N/C or test pin) | | 16 | NC | No Connection / Not internally connected | | 17 | NC | No Connection | | 18 | GND (POWER) | Power Ground | | 19 | NC | No Connection | | 20 | +OUT | (May be N/C or test pin) | | 21 | VCC (PRE) | Positive supply for the pre-amplifier stage | | 22 | VEE (PRE) | Negative supply for the pre-amplifier stage |

VCc(“Positive Supply (V+)