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TPA6139A2 - Electric Signal Amplifiers, Audio

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Product Specifications from Texas Instruments Inc

The TPA6139A2PW is a 25mW Pop-Free stereo Head Phone driver designed to reduce component count, board space and cost. It is ideal for single supply electronics where size and cost are critical design parameters.The TPA6139A2 does not require a power supply greater than 3.3V to generate its 25mW, nor does it require a split rail power supply.Designed using TIs patented DIRECTPATH technology which integrates a charge pump to generate a negative supply rail that provides a clean, pop-free ground biased output. The TPA6139A2 is capable of driving 25mW into 32ύ and 2Vms into a 600Ω load. DIRECTPATH also allows the removal of the costly output DC-blocking capacitors.The device has fixed gain single ended inputs with a gain select pin. Using a single resistor on this pin, the designer can choose from 13 internal programmable gain settings to match the line driver with the Codec output level. It also reduces the component count and board space.Headphone outputs have