TDA7294 Power Amplifier User Manual
Contents
1. TDA7294 Power Amplifier User Manual Analog Metric www analogmetric com sales analogmetric com Copyright 2009 All Rights Reserved TDA7294 Power Amplifier J Analog Metric INTRODUCTION This MOSFET power amplifier uses common TDA7294 IC which is often applied in car audio that requires output power up to 100W for each channel This kit can be configured either in stereo or mono mode BTL For the mono mode it supports BTL operation so two kits can provide stereo BTL amplifier The required power can be supplied either by AC or DC Testing points are added The output current can be set by a resistor trimmer JP2 JP3 JP4 www analogmetric com TDA7294 Power Amplifier J Analog Metric FEATURES 1 Requires DC power supply 24 to 38V DC 2 Configurable to either stereo R amp L audio channels or mono BTL channel mode 3 RMS output power a up to 70W 70W in Stereo Mode 4 6 8 Ohms loading b up to 1OOW 100W for one BTL channel in Bridge Mode 4 6 8 Ohms loading 4 High dynamic range 5 Voltage gain 30dB 6 THD lt 0 05 7 Options DC Servo Module for offset cancellation and speaker protection module 8 PCB dimension 162 H x 49 W mm double layers thickness 2 4mm with 20z copper PRECAUTIONS e Use a power transformer with fuse 6A socket to limit the supply current in case of short circuit or incorrect assembly e Double check the assembled components with the schematics2. e Turn off the power supply if you observe any smokes or hear strange sound coming out from the transformer or board If there is short circuit the transformer will be getting very hot shortly www analogmetric com TDA7294 Power Amplifier J Analog Metric PROCEDURES If Assembly all the components according to the schematic and part list Notice the polarity of the electrolytic capacitors There are no polarities of the thin film capacitors Mount the heat sinks to the TDA7294 chips Mute can be set by the jumper Header 3 For stereo mode open JP1 JP2 JP3 and JP4 Apply input signal to R IN and L IN Bridge and Bridge corresponds to L OUT and R OUT respectively For mono BTL mode short JP1 JP2 JP3 and JP4 Apply input signal to L IN Bridge and Bridge corresponds to the positive and negative output voltages respectively Enjoy it you have any questions on assembly please contact us by email tech analogmetric com www analogmetric com
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