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AAT5101 Datasheet Preview

AAT5101 Datasheet

2.5W Mono Filter-Free Class D Audio Power Amplifier

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DATA SHEET
AAT5101
2.5W Mono Filter-Free Class D Audio Power Amplifier
Description
The AAT5101 is a high efficiency, 2.5W mono class D
audio power amplifier. The low noise, filterless PWM
architecture eliminates the output filter, reduces the
external component count and system cost, and simpli-
fies system design. With high efficiency of up to 92% and
the industry lowest 1.35mA quiescent current, it increas-
es battery lifetime and dramatically lowers the junction
temperature. The space saving wafer-level chip scale
package (WLCSP) and minimum external component
requirements make it ideal for cellular phones and
PDAs.
With high PSRR, low THD+N, and 91dB SNR, the
AAT5101 guarantees clean sound across the wide audio
output power range and the full audio frequency domain.
Short circuit and thermal protection with self-recovery
prevents the device from being damaged during over
current conditions.
In cellular phones, the earpiece, speaker phone and
melody ringer can each be driven by the AAT5101. Also,
proprietary technology successfully suppresses pop and
click noise.
Typical Application
Features
• Maximum Battery Life and Minimum Heat
1.35mA Quiescent Current
0.06μA Shutdown Current
Up to 92% Efficiency
• Large Output Power Capabilities
1.35W with 8Ω Load and THD+N < 1%
2.5W with 4Ω Load and THD+N < 10%
• Pop and Click Noise Suppression Circuitry
• Thermal and Output Short Circuit Protection with Self-
recovery
• High Performance, THD+N of 0.12% at 5V, 8Ω Load
and POUT = 1.0W
• Filter-less Capability
• Internally Generated 250 kHz Switching Frequency
• Excellent PSRR and Wide Supply Voltage Range (2.1V
to 5.5V)
• Fully Differential Design
• External Gain Configuration Capability
• 9-Pin Wafer-Level Chip Scale Packaging (WLCSP)
Applications
• Cellular Phones
• MP4s
• Notebook Computers
• PDAs
• Portable DVD Players
To Battery
CS
+ RI IN -
Differential
input
- RI IN +
-
+
VDD
PWM
VO+
H- Bridge
VO -
RL
SHUTDOWN
Shutdown Control
GND
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201876B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012
1




Skyworks

AAT5101 Datasheet Preview

AAT5101 Datasheet

2.5W Mono Filter-Free Class D Audio Power Amplifier

No Preview Available !

Pin Description
Pin #
A1
A2
A3
B1
B2
B3
C1
C2
C3
Symbol
IN+
GND
VO-
VDD
PVDD
GND
IN-
SHUTDOWN
VO+
DATA SHEET
AAT5101
2.5W Mono Filter-Free Class D Audio Power Amplifier
Type
I
I
O
I
I
I
I
O
Description
Positive differential input.
Analog ground.
Negative BTL output.
Analog power supply.
Power supply for internal H-bridge stage.
Analog ground.
Negative differential input.
The device enters shutdown mode when a low level is applied on this pin. An internal
300kΩ will force the device into shutdown mode if no signal is applied to this pin. It also
helps to save space and cost.
Positive BTL output
Pin Configuration
WLCSP-9
. (Top View)
IN+ GND
VO-
A1 A2 A3
VDD
B1
PVDD
B2
GND
B3
IN- SHUTDOWN VO+
C1 C2 C3
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2 201876B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 25, 2012


Part Number AAT5101
Description 2.5W Mono Filter-Free Class D Audio Power Amplifier
Maker Skyworks
Total Page 15 Pages
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