AmplifierCircuits

Description: The LM380 is a power audio amplifier for consumer applications. In order to hold system cost to a minimum, gain is internally fixed at 34 dB. A unique input stage allows ground referenced input signals. The output automatically selfcenters to one-half the supply voltage. Circuit diagram: 2.5W Audio Power Amplifier

General description: The TDA8594 is a complementary quad Bridge Tied Load (BTL) audio power amplifier  made in BCDMOS technology. It contains four independent amplifiers in BTL c onfiguration. Through the I2C-bus, diagnosis of temperature warning and clipping level is  fully programmable and the information available via two diagnostic pins is selectable.  The status of each amplifier (output offset, load or no load, short-circuit or speaker  incorrectly connected) can be read separately. Features and benefits: Operates in legacy mode (non I2C-bus) and I2C-bus mode (3.3 V and 5 V compliant) Three hardware-programmable I2C-bus addresses Drives 4  or 2  loads Speaker fault detection Independent short-circuit protection per channel Loss of ground and open VP safe (with 200 m series impedance and a supply   decoupling capacitor of 2200 F maximum) All outputs short-circuit proof to ground, supply voltage and across the load All pins short-cir...

Features: The use of a current mirror circuit, cascode circuit, pure  complementary circuit provides low distortion (THD=  0.008%/100kHz LPF ON).  Possible to design electronic supplementary circuits  (pop noise muting at the time of power ON/OFF, load  short protector, thermal shutdown) Vcc max ±87 V Vcc recommended ±60 V  Circuit Diagram 150W Audio Circuit Diagram PCB Layout: PCB layout for audio circuit STK4048 Power supply: 150W Audio Circuit Diagram