TS4975

TS4975 Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus ■ ■ ■ ■ ■ ■ ■ ■ ■ Operating from VCC = 2.5V to 5.5V I²C bus control interface 40mW output power @ VCC = 3.3V, THD = 1%, F = 1kHz, with 16Ω load Ultra-low consumption in stdby mode: 0.6µA Digital volume control range from 18dB to -34dB 14-step digital volume control 9 different output mode selections Pop & click noise reduction circuitry Flip-chip package, 12 x 300µm bumps (leadfree) Pin out (top view) TS4975EIJT - Flip Chip Description www.DataSheet4U.com The TS4975 is a stereo audio headphone driver capable of delivering up to 102mW per channel of continuous average power into a 16Ω singleended load with 1% THD+N from a 5V power supply. The overall gain of these headphone drivers is controlled digitally by volume control registers programmed via the I2C interface, minimizing the number of external components needed. This device can also easily be driven by an MCU to select the output modes, through the I2C bus interface. A phantom ground configuration allows one to avoid using bulky capacitors on the outputs of the headphone amplifiers. The TS4975 is packaged in a 1.8mm X 2.3mm Flip Chip package, ideally suited for spaceconscious portable applications. It has also an internal protection mechanism. thermal shutdown OUT1 PHG1 PHG2 OUT2 IN1 VCC GND IN2 BYPASS SCL SDA ADD Applications ■ ■ ■ ■ Mobile phones (cellular / cordless) PDAs Laptop/notebook computers Portable audio devices O...