TS4851 Datasheet, PDF (1/28 Pages) STMicroelectronics – MONO 1 W SPEAKER AND STEREO 160 mW HEADSET BTL DRIVERS WITH DIGITAL VOLUME CONTROL

TS4851
Mono 1W Speaker and Stereo 160mW Headset
BTL Drivers with Digital Volume Control
■ Operating from V_CC = 3V to 5.5V
■ Rail to rail input/output
■ Speaker driver with 1 W output @ Vcc = 5V,
THD+N = 1%, F = 1kHz, 8Ω load
■ Headset drivers with 160 mW output @
Vcc = 5V, THD+N = 1%, F = 1kHz, 32Ω load
■ Headset output is 30mW in stereo @
Vcc = 3V
■ THD+N < 0.5% Max @ 20mW into 32Ω BTL,
50Hz < Frequency < 20kHz
■ 32-step digital volume control from -
34.5dB to +12dB
■ +6dB power up volume and full standby
■ 8 different output modes
■ Pop & click reduction circuitry
■ Low shutdown current (< 100nA)
■ Thermal shutdown protection
■ Flip-chip package 18 x 300µm bumps
Description
The TS4851 is a low power audio amplifier that
can drive either both a mono speaker or a stereo
headset. To the speaker, it can deliver 400 mW
(typ.) of continuous RMS output power into an 8Ω
load with a 1% THD+N value. To the headset
driver, the amplifier can deliver 30 mW (typ.) per
channel of continuous average power into a
stereo 32 Ω bridged-tied load with 0.5% THD+N
@ 3.3V.
This device features a 32-step digital volume
control and 8 different output selections. The
digital volume and output modes are controlled
through a three-digit SPI interface bus.
Pin Connections (top view)
TS485IJT - Flip-chip
TS485EIJT - Lead free Flip-chip
Pin Out (top view)
R
OUT<
-
R
IN
PHONE
IN
BYPASS
R
OUT +
L
IN
SPKR
OUT+
GND
VCC
L
OUT +
VCC
GND
NC
SPKR
OUT -
L
OUT -
DATA
ENB
CLK
Applications
■ Mobile Phones
Order Codes
Part Number
TS4851IJT
TS4851EIJT
Temperature Range
-40, +85°C
Package
Flip-Chip
Lead free Flip-Chip
J = Flip Chip Package - only available in Tape & Reel (JT))
Packaging
Tape & Reel
Marking
A51
A51
March 2005
Revision 5
1/28