TS4855 HEADSET DRIVER Datasheet

TS4855 Datasheet, PDF, Equivalent


Part Number

TS4855

Description

LOUDSPEAKER & HEADSET DRIVER

Manufacture

STMicroelectronics

Total Page 27 Pages
Datasheet
Download TS4855 Datasheet


TS4855
TS4855
LOUDSPEAKER & HEADSET DRIVER
WITH VOLUME CONTROL
s OPERATING FROM VCC = 3.0 V to 5.0 V
PIN CONNECTIONS (top view)
s SPEAKER: Mono, THD+N @ 1 kHz is 1%
Max @ 1 W into 8 BTL
s HEADSET: Stereo, THD+N @ 1 kHz is 0.5%
Max. @ 85 mW into 32 BTL
t(s)s VOLUME CONTROL: 32-step digital
volume control
ucs OUTPUT MODE: Eight different selections
ds Ultra low pop-and-click
ros Low Shutdown Current (0.1 µA, typ.)
te Ps Thermal Shutdown Protection
les FLIP-CHIP Package 18 X 300 µm Bumps
os TS4855E IJT Lead-Free option available
bsDESCRIPTION
- OThe TS4855 is a complete low power audio
)amplifier solution targeted at mobile phones. It
t(sintegrates, into an extremely compact flip-chip
cpackage, an audio amplifier, a speaker driver, and
ua headset driver.
rodThe Audio Power Amplifier can deliver 1.1 W
P(typ.) of continuous RMS output power into an 8
tespeaker with a 1% THD+N value. To the headset
driver, the amplifier can deliver 85 mW (typ.) per
lechannel of continuous average power into stereo
so32 bridged-tied load with 0.5% THD+N @ 5 V.
ObThis device features a 32-step digital volume
TS4855IJT - Flip Chip
Pin Out (top view)
control and 8 different output selections. The
digital volume and output modes are controlled
through a three-digit SPI interface bus.
APPLICATIONS
• Mobile Phones
ORDER CODE
Part Number
TS4855IJT
TS4855EIJT
Temperature
Range
-40, +85°C
-40, +85°C
Package
J
J = Flip Chip Package - only available in Tape & Reel (JT))
March 2004
1/27

TS4855
TS4855
Application Information for a Typical Application
1 APPLICATION INFORMATION FOR A TYPICAL APPLICATION
lete Product(s) - Obsolete Product(s)External component descriptions
soComponent
Functional Description
Ob This is the input coupling capacitor. It blocks the DC voltage at, and couples the input signal to the
Cin amplifiers input terminals. Cin also creates a highpass filter with the internal input impedance Zin at
Fc = 1 / (2π x Zin x Cin).
Cs This is the Supply Bypass capacitor. It provides power supply filtering.
CB This is the Bypass pin capacitor. It provides half-supply filtering.
2/27


Features TS4855 LOUDSPEAKER & HEADSET DRIVER WITH VOLUME CONTROL s OPERATING FROM VCC = 3.0 V to 5.0 V PIN CONNECTIONS (top v iew) s SPEAKER: Mono, THD+N @ 1 kHz is 1% Max @ 1 W into 8 Ω BTL s HEADSE T: Stereo, THD+N @ 1 kHz is 0.5% Max. @ 85 mW into 32 Ω BTL t(s)s VOLUME CON TROL: 32-step digital volume control uc s OUTPUT MODE: Eight different selectio ns ds Ultra low pop-and-click ros Low S hutdown Current (0.1 µA, typ.) te Ps T hermal Shutdown Protection les FLIP-CHI P Package 18 X 300 µm Bumps os TS4855E IJT Lead-Free option available bsDESCR IPTION - OThe TS4855 is a complete low power audio )amplifier solution targete d at mobile phones. It t(sintegrates, i nto an extremely compact flip-chip cpac kage, an audio amplifier, a speaker dri ver, and ua headset driver. rodThe Audi o Power Amplifier can deliver 1.1 W P(t yp.) of continuous RMS output power int o an 8 Ω tespeaker with a 1% THD+N va lue. To the headset driver, the amplifi er can deliver 85 mW (typ.) per lechannel of continuous average.
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