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TS4975EIJT bảng dữ liệu(PDF) 1 Page - STMicroelectronics

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Rev 3
November 2005
1/36
36
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 16
Ω 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 (lead-
free)
Description
The TS4975 is a stereo audio headphone driver
capable of delivering up to 102mW per channel of
continuous average power into a 16
Ω single-
ended 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 space-
conscious portable applications.
It
has
also
an
internal
thermal
shutdown
protection mechanism.
Applications
Mobile phones (cellular / cordless)
PDAs
Laptop/notebook computers
Portable audio devices
Order Codes
TS4975EIJT - Flip Chip
OUT1
IN1
BYPASS
PHG1
VCC
SCL
PHG2
GND
SDA
OUT2
IN2
ADD
OUT1
IN1
BYPASS
PHG1
VCC
SCL
PHG2
GND
SDA
OUT2
IN2
ADD
Pin out (top view)
Part Number
Temperature Range
Package
Packing
Marking
TS4975EIJT
-40, +85°C
Flip-chip
Tape & Reel
A75
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