ISL54000 Datasheet, PDF (1/11 Pages) Intersil Corporation – Integrated Audio Amplifier Systems

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Data Sheet
ISL54000, ISL54001, ISL54002
October 17, 2007
FN6458.2
Integrated Audio Amplifier Systems
The Intersil ISL54000, ISL54001, ISL54002 family of devices
are integrated audio power amplifier systems that combine
stereo BTL 8Ω amplifiers in a single package. The devices are
designed to operate from a single +2.7V to +5V power supply.
All devices are offered in a 20 Ld 4x4 thin QFN package.
Targeted applications include handheld equipment such as
cell-phones, MP3 players, and games/toys.
The ISL54000, ISL54001, ISL54002 parts contain two class
AB bridge-tied (BTL) type power amplifiers for driving stereo
8Ω speakers. Each BTL is capable of delivering 800mW (typ)
with 0.4% THD+N and 941mW (typ) with 1% THD+N of
continuous average power into an 8Ω BTL speaker load
when using a 5V supply.
The ISL54001 and ISL54002 feature a 2:1 stereo input
multiplexer front-end. This allows selection between two
stereo sources. In addition the ISL54002 has the capability
of mixing the stereo inputs.
All devices in this family feature low power shutdown,
thermal overload protection and click/pop suppression. The
click and pop circuitry eliminates audible transients during
audio source changes and transitioning in and out of
shutdown.
Features
• Pb-Free (RoHS Compliant)
• Class AB 941mW Stereo BTL Speaker Amplifiiers
• Single Supply Operation . . . . . . . . . . . . . . . . .+2.7V to +5.5V
• THD+N at 1kHz, 800mW into 8Ω . . . . . . . . . . . . . . . . . .0.4%
• THD+N at 1kHz, 941mW into 8Ω . . . . . . . . . . . . . . . . . . . 1%
• Low Power Shutdown
• Thermal Shutdown Protection
• “Click and Pop” Suppression Circuitry
• 2:1 Stereo Input Mux (ISL54001, ISL54002)
• Mixing of Two Stereo Inputs (ISL54002)
• TTL Logic-Compatible
• Available in 20 Ld 4x4 Thin QFN
Applications
• Battery powered, Handheld, and Portable Equipment
- Cellular/mobile Phones
- PDA’s, MP3 Players, DVD Players, Cameras
- Laptops, Notebooks, Palmtops
- Handheld Games and Toys
• Desktop Computers
ISL54002 Typical Application Circuit and Block Diagram
0.1µF
RIGHT AUDIO 1
RIGHT AUDIO 2
0.22µF
0.22µF
IN_1R
IN_2R
MUX/MIXER
V_DD
BTL
OUTR+
OUTR-
LEFT AUDIO 1
LEFT AUDIO 2
0.22µF IN_1L
0.22µF _IN2L
MUX/MIXER
OUTL+
BTL
OUTL-
MICRO
CONTROLLER
CLICK AND POP
THERMAL
PROTECTION
SD
INS
LOGIC CONTROL
MIX
BIAS
REF
C_REF
1µF
GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright Intersil Americas Inc. 2007. All Rights Reserved
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