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Showing posts with the label high performance hi-fi amplifier

2 x 50 Watt High Efficiency Power Amplifier

General Description:
     The DDX-2060 power device is a monolithic dual  channel H-Bridge that can provide up to 50 watts  per channel of audio power at very high  efficiency. The DDX-2060 power device contains a logic interface, integrated bridge  drivers, high efficiency MOSFET output transistors and protection circuitry. The device  may be used as a dual bridge or reconfigured as  a single bridge with double the output current capability.  The benefits of the DDX amplification system are  an all-digital design that eliminates the need for a  digital to analog converter (DAC) and the high  efficiency operation derived from the use of Apogee's patented damped ternary pulse width  modulation (PWM). This approach provides an  efficiency advantage over conventional Class-D  designs and up to three times the efficiency of  typical Class A/B amplifiers with music input  signals. 
Circuit Diagram:

50 W high performance hi-fi amplifier


The TDA1514A integrated circuit is a hi-fi power amplifier for use as a building block in radio, tv and other audio applications. The high performance of the IC meets the requirements of digital sources (e.g. Compact Disc equipment). The circuit is totally protected, the two output transistors both having thermal and SOAR protection (see Fig.3). The circuit also has a mute function that can be arranged for a period after power-on with a delay time fixed by external components. The device is intended for symmetrical power supplies but an asymmetrical supply may also be used.
Features High output powerLow harmonic distortionLow intermodulation distortionLow offset voltageGood ripple rejectionMute/stand-by facilitiesThermal protectionProtected against electrostatic dischargeNo switch-on or switch-off clicksVery low thermal resistanceSafe Operating Area (SOAR) protection.Circuit Diagram for 50 W high performance hi-fi amplifier: