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LM4995 Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte LM4995
Spiegazioni elettronici  1.3 W Audio Power Amplifier
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
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LM4995 Scheda tecnica(HTML) 1 Page - Texas Instruments

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LM4995, LM4995TMBD
www.ti.com
SNAS329G – APRIL 2006 – REVISED APRIL 2013
LM4995
1.3 W Audio Power Amplifier
Check for Samples: LM4995, LM4995TMBD
1
FEATURES
DESCRIPTION
The LM4995 is an audio power amplifier primarily
2
Available in Space-Saving 0.4mm Pitch
designed
for
demanding
applications
in
mobile
DSBGA Package
phones and other portable communication device
Ultra Low Current Shutdown Mode
applications. It is capable of delivering 1.2W of
BTL Output Can Drive Capacitive Loads
continuous average power to an 8
Ω BTL load with
less than 1% distortion (THD+N) from a 5VDC power
Improved Click and Pop Circuitry Eliminates
supply.
Noise during Turn-On and Turn-Off Transitions
Boomer
audio
power
amplifiers
were
designed
2.4 - 5.5V Operation
specifically to provide high quality output power with a
No Output Coupling Capacitors, Snubber
minimal
amount
of
external
components.
The
Networks or Bootstrap Capacitors Required
LM4995 does not require output coupling capacitors
Unity-Gain Stable
or bootstrap capacitors, and therefore is ideally suited
for mobile phone and other low voltage applications
External Gain Configuration Capability
where minimal power consumption is a primary
WSON Package: 0.5mm Pitch, 3 x 3 mm
requirement.
The LM4995 features a low-power consumption
APPLICATIONS
shutdown mode, which is achieved by driving the
Mobile Phones
shutdown pin with logic low. Additionally, the LM4995
PDAs
features an internal thermal shutdown protection
mechanism.
Portable electronic devices
The LM4995 contains advanced click and pop
KEY SPECIFICATIONS
circuitry
which
eliminates
noise
which
would
otherwise
occur
during
turn-on
and
turn-off
PSRR at 3.6V (217Hz & 1kHz): 75 dB
transitions.
Output Power at 5.0V, 1% THD+N, 8
Ω:
The
LM4995
is
unity-gain
stable
and
can
be
1.3 W (typ)
configured by external gain-setting resistors.
Output Power at 3.6V, 1% THD+N, 8
Ω:
625 mW (typ)
Shutdown Current: 0.01µA (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
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006–2013, 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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