AmplifierCircuits

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....

GENERAL DESCRIPTION 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 power Low harmonic distortion Low intermodulation distortion Low offset voltage Good ripple rejection Mute/stand-by facilities Thermal protection Protected against electrostatic discharge No switch-on or switch-off clicks Very low thermal resistance Safe Operating Area (SOAR) protection. Circuit Diagram for 50 W high performance hi-fi amplifier...