STMicroelectronics TS4975
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.DESCRIPTION
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 ADDAPPLICATIONS
●●
●
● Mobile phones (cellular / cordless) PDAs Laptop/notebook computers Portable audio devices Order Codes Part Number TS4975EIJT Temperature Range -40, +85°C Package Flip-chip Packing Tape & Reel Marking A75 Rev 3 1/36 36 November 2005
ABSOLUTE MAXIMUM RATINGS
TS4975 1ABSOLUTE MAXIMUM RATINGS
Table 1. Symbol VCC Vi Toper Tstg Tj R thja Pdiss ESD ESD Latch-up Key parameters and their absolute maximum ratings Parameter Supply voltage (1) Input Voltage (2) Operating Free Air Temperature Range Storage Temperature Maximum Junction Temperature Thermal Resistance Junction to Ambient (3) Power Dissipation Susceptibility - Human Body Model(5) Susceptibility - Machine Model (min.