MC34119DR Datasheet

Low Power Audio


The MC34119DR is a low power audio amplifier intergrated circuit intended (primarily) for telephone applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages (2.0 V minimum). Coupling capacitors to the speaker are not required. Open loop gain is 80 dB, and the closed loop gain is set with two external resistors. A Chip Disable pin permits powering down and/or muting the input signal. The MC34119 is available in standard 8&ndash;pin DIP, SOIC package, and TSSOP package. MC34119DR Features &bull; Wide Operating Supply Voltage Range (2.0 V to 16 V), Allows Telephone Line Powered Applications&bull; Low Quiescent Supply Current (2.7 mA Typ) for Battery Powered Applications&bull; Chip Disable Input to Power Down the IC&bull; Low Power&ndash;Down Quiescent Current (65 &micro;A Typ)&bull; Drives a Wide Range of Speaker Loads (8.0 &Omega;and Up)&bull; Output Power Exceeds 250 mW with 32 &Omega;Speaker&bull; Low Total Harmonic Distortion (0.5% Typ)&bull; Gain Adjustable from <0 dB to >46 dB for Voice Band&bull; Requires Few External Components


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Manufacturer information


Diodes Incorporated is a leading global manufacturer and supplier of high-quality, application-specific, standard products within the broad discrete, logic and analog semiconductor markets. Diodes Incorporated primarily serves the computing, consumer, communications, industrial and automotive segments. Diodes’ diverse product portfolio includes parts for LCD/LED TVs and displays, desktop, notebook and tablet computing, smartphones and hand-held devices, set-top boxes, power supplies and USB protection as well as many other application areas.

Diodes Incorporated offers a wide array of products including diodes, rectifiers, transistors, MOSFETs, gate drivers, protection devices, function-specific arrays, amplifiers and comparators, Hall-effect sensors and temperature sensors, power management devices including LED drivers, AC-DC converters and controllers, DC-DC switching regulators, linear voltage regulators, current monitors, and voltage reference and shunt regulators, along with special function devices including USB power switches, load switch devices, voltage supervisors and motor controllers.

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