TS4956 Datasheet, PDF (1/51 Pages) STMicroelectronics – Stereo audio amplifier system with I2C bus interface

TS4956
Stereo audio amplifier system with I²C bus interface
■ Operating from V_CC = 2.7 V to 5.5 V
■ I²C bus control interface
■ 38 mW output power @ V_CC = 3.3 V,
THD = 1%, F = 1 kHz, with 16Ω Load
■ Ultra low consumption in standby mode: 0.5 µA
■ Digital volume control range from +12 dB to
-34 dB
■ 32-step digital volume control
■ Stereo loudspeaker option by I²C
■ 8 different output mode selections
■ Pop & click reduction circuitry
■ Flip-chip package, 18 bumps with 300 µm
diameter
■ Lead-free flip chip package
■ Output power limitation on headphone for
eardrum damage consideration
Description
The TS4956 is a complete audio system device
with three dedicated outputs, one stereo
headphone, one loudspeaker drive and one mono
line for a hands-free set. The stereo headphone is
capable of delivering more than 25 mW per
channel of continuous average power into 16Ω
single-ended loads with 0.3% THD+N from a 5 V
power supply. The device functions are controlled
via an I²C bus, which minimizes the number of
external components needed.
The overall gain and the different output modes of
the TS4956 are controlled digitally by the control
registers which are programmed via the I²C
interface. It has also an internal thermal shutdown
protection mechanism.
TS4956 - Flip-Chip18
Pin connections (top view)
PGH
RIN
MIN
MIP
LHP-
LIN
SRP+
GND
VCC
VCC
GND
MLO
RHP+
SDA
BYPASS
I2CVCC
SRN-
SCL
Applications
■ Mobile phones (cellular / cordless)
■ PDAs
■ Laptop / notebook computers
■ Portable audio devices
Device summary table
Part Number
TS4956EIJT
Temperature Range
-40°C to +85°C
Package
Lead free flip-chip18
Packing
Tape & Reel
Marking
56
May 2006
Rev. 3
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