Texas Instruments LM4953 Evaluation Board LM4953SDBD/NOPB LM4953SDBD/NOPB Scheda Tecnica
Codici prodotto
LM4953SDBD/NOPB
SNAS299E – SEPTEMBER 2005 – REVISED FEBRUARY 2006
LM4953 Boomer™ Audio Power Amplifier Series Ground-Referenced, Ultra Low Noise,
Ceramic Speaker Driver
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FEATURES
DESCRIPTION
The LM4953 is an audio power amplifier designed for
23
•
Pop & Click Circuitry Eliminates Noise During
driving Ceramic Speaker in portable applications.
Turn-On and Turn-Off Transitions
When powered by a 3.6V supply, it is capable of
•
Low, 1
μ
A (Max) Shutdown Current
forcing 12.6Vpp across a 2
μ
F + 30
Ω
bridge-tied-load
•
Low, 7mA (Typ) Quiescent Current
(BTL) with less than 1% THD+N.
•
12.6Vpp Mono BTL Output, Load = 2
μ
F+ 30
Ω
Boomer
audio
power
amplifiers
were
designed
specifically to provide high quality output power with a
•
Thermal Shutdown
minimal
amount
of
external
components.
The
•
Unity-Gain Stable
LM4953 does not require bootstrap capacitors, or
•
External Gain Configuration Capability
snubber circuits. Therefore it is ideally suited for
display applications requiring high power and minimal
display applications requiring high power and minimal
APPLICATIONS
size.
•
Cellphone
The LM4953 features a low-power consumption
shutdown mode. Additionally, the LM4953 features an
shutdown mode. Additionally, the LM4953 features an
•
PDA
internal thermal shutdown protection mechanism.
KEY SPECIFICATIONS
The LM4953 contains advanced pop & click circuitry
that eliminates noises which would otherwise occur
that eliminates noises which would otherwise occur
•
Quiescent Power Supply Current (V
dd
= 3V),
during turn-on and turn-off transitions.
7mA(Typ)
The
LM4953
is
unity-gain
stable
and
can
be
•
BTL Voltage Swing
configured by external gain-setting resistors.
(2
μ
F+30
Ω
load, 1% THD+N, V
dd
= 3.6V), 12.6V
pp
(Typ)
•
Shutdown Current, 1µA (Max)
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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.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Boomer is a trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2006, 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.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.