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LM49153 Arkusz danych(PDF) 1 Page - Texas Instruments

Numer części LM49153
Szczegółowy opis  Mono Audio Subsystem with Class G Headphone Amplifier, Class D Speaker Amplifier, Noise Gate and Speaker Protection
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

LM49153 Arkusz danych(HTML) 1 Page - Texas Instruments

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LM49153
www.ti.com
SNAS496C – JANUARY 2011 – REVISED MAY 2013
LM49153 Boomer™ Mono Audio Subsystem with Class G Headphone Amplifier, Class D
Speaker Amplifier, Noise Gate and Speaker Protection
Check for Samples: LM49153
1
FEATURES
DESCRIPTION
The LM49153 is a fully integrated audio subsystem
23
Class G Ground Referenced Headphone
designed for portable handheld applications such as
Outputs
cellular
phones.
Part
of
Texas
Instruments'
High Efficiency Class D Amplifier with Spread
PowerWise
family
of
products,
the
LM49153
Spectrum
combines an earpiece switch, a high efficiency 25mW
class G headphone amplifier, and a high efficiency
No Clip
1.35W class D loudspeaker into a single device.
Speaker Protection
The headphone amplifiers feature Texas Instruments'
Noise Gate
class G ground referenced architecture that creates a
I2C Volume and Mode Control
ground-referenced output with dynamic supply rails
Advanced Click-and-Pop Suppression
for optimum efficiency. The class D amplifier features
an ALC (Automatic Level Control) with a noise gate
Micro-Power Shutdown
that provides both no-clip and speaker protection.
APPLICATIONS
Mode selection, shutdown control, and volume are
controlled through an I2C compatible interface.
Feature Phones
Smart Phones
Click
and
pop
suppression
eliminates
audible
transients on power-up/down and during shutdown.
The LM49153 is available in an ultra-small 25-bump
KEY SPECIFICATIONS
0.4mm pitch DSBGA package (2.30mm x 2.42mm).
Class G Headphone Amplifier,
HPVDD = 1.8V, RL = 32Ω
IDDQHP, 1.2mA (Typ)
POUT, THD+N ≤ 1%, 25mW (Typ)
HP VOS, 0.5mV (Typ)
Mono Class D Speaker Amplifier,
RL = 8Ω, THD+N < 1%
POUT, LSVDD = 5.0V, 1.35W (Typ)
POUT, LSVDD = 3.6V, 680mW (Typ)
Efficiency 88% (Typ)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
Boomer is a trademark of Texas Instruments.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2011–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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