Texas Instruments LM48556TLBD Evaluation Module LM48556TLBD LM48556TLBD Scheda Tecnica
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LM48556TLBD
SNAS452B – JUNE 2008 – REVISED MAY 2013
LM48556 Boomer™ Fully Differential, Mono, Ceramic Speaker Driver
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FEATURES
DESCRIPTION
The LM48556 is a single supply, mono, ceramic
23
•
Fully Differential Amplifier
speaker driver with an integrated charge-pump,
•
Externally Configurable Gain
designed for portable devices, such as cell phones,
•
Integrated Charge Pump
where board space is at a premium. The LM48556
charge pump allows the device to deliver 17.5V
charge pump allows the device to deliver 17.5V
PP
•
Low Power Shutdown Mode
(typ) from a single 4.5V supply. Additionally, the
•
Soft Start Function
charge pump features a soft start function that
minimizes transient current during power-up.
minimizes transient current during power-up.
APPLICATIONS
The LM48556 features high power supply rejection
•
Mobile Phones
ratio (PSRR) of 80dB at 217Hz, allowing the device to
•
PDA's
operate in noisy environments without additional
power supply conditioning. Flexible power supply
power supply conditioning. Flexible power supply
•
Digital Cameras
requirements allow operation from 2.7V to 5.0V.
Additionally, the LM48556 features a differential input
Additionally, the LM48556 features a differential input
KEY SPECIFICATIONS
function and an externally configurable gain. A low
•
Output Voltage Swing
power
shutdown
mode
reduces
supply
current
consumption to 0.1
μ
A.
–
V
DD
= 3.6V, 1kHz 14.2V
PP
(typ)
–
V
DD
= 4.5V, 1kHz 17.5V
PP
(typ)
Superior click and pop suppression eliminates audible
transients on power-up/down and during shutdown.
transients on power-up/down and during shutdown.
•
Power Supply Rejection Ratio
The LM48556 is available in an ultra-small 12-bump
–
f = 217Hz, V
DD
= 3.6V 80dB (typ)
DSBGA package (2mm x 1.5mm).
•
I
DD
at V
DD
= 3.6V 4.8mA (typ)
•
Wake-Up Time 0.5ms (typ)
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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 © 2008–2013, 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.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.