LM4702 chip is an odd chip that applies to voltage of tall power supply outputs class driver, reach according to different operation voltage, function relevant make sure cent is 3 different level. LM4702C chip supplies market of broad electronic consumer goods only, include stereo sound system and sound to resemble equipment receiver among them. The rated voltage of LM4702B chip is as high as / negative 20V comes 100V, and technical requirement is more strict, most apply to fundamental of amplifier of frequency of amplifier of high-end sound system, guitar, professional class and height passive loudhailer. LM4702A chip applies to freeboard to carry equipment of the sound system that consumes the market and professional class sound, because this chip passes test of all threshold value successfully already, assure to be in / negative 20V reachs designation temperature inside the voltage limits to 100V concerned function requirement is accorded with completely inside limits. This chip is used accord with product of for military use the aureate TO-3 of 883 standards is enclosed.
Simpler power amplifier is designed
LM4702 chip is an OK and complete collection become the driver in power amplifier, need not add amplifier of the vertical that set branch additionally for the system because of this engineer, the design time of your power amplifier can shorten considerably. Systematic design engineer can be used economic the time that come down is dedicated work at outputting the design of power level, ensure output power can adjust neatly inside wide power range, in order to support a variety of different application, for example the amplifier that the sound of 50W resembles equipment receiver and 500W. Because use LM4702 chip to need not be added,set discrete element of a large number of equivalent high pressure, because this conduce shortens,design time, and the board face space that saves circuit board.
Chip of a LM4702 can replace a group of two stereo schism drive, and collocation of chip of a few LM4702 can support much track even together surround stereo sound system. Because the operation voltage of LM4702 chip is extremely tall, although use the low cost power source that does not have stabilized voltage function,supply a system accordingly, the application that also can be tall circuitry provides enough voltage amplitude space.