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PDF PAM8302 Data sheet ( Hoja de datos )
| Número de pieza | PAM8302 | |
| Descripción | Tiny Package 2 Watt Class-D Audio Amplifiers | |
| Fabricantes | PAM | |
| Logotipo |  |
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PAM8302
Tiny Package 2 Watt Class-D Audio Amplifiers With Enable
DESCRIPTION
The PAM8302 is a 2 Watt, 8-pin, class D audio
amplifier with Enable function, it offers low THD+N
(0.10%), allowing it to produce high-quality sound
reproduction.
The PAM8302 runs off of a 5 Volt supply at much
higher efficiencies than their class AB cousins,
making it ideal for many portable applications.
The PAM8302 only requires very few external
components (as few as two tiny capacitors), results
in significant cost and board space savings.
The PAM8302 is available in a SOP8 package.
TYPICAL APPLICATION CIRCUIT
FEATURES
2 Watts @ 10% THD output into a 4 load at 5V
Support speakers or earphone (4 to 32 ).
With Enable function.
Superior low noise without input.
Supply voltage from 2.5V to 5.5V.
85% efficiency above.
Short Circuit Protection.
Less output capacitor and inductor to save the
space and cost.
Low THD+N
Low quiescent current < 10 mA
APPLICATIONS
Notebook Computers.
PDAs/ GPS Navigator/ e-Dictionary
Portable DVD Players, Game Machines.
Cellular Phones, VoIP Phones, Screen Phones
MP3 or PMP Players.
Portable Speaker System, Portable Amplifier
LCD monitor / TV.
Bluetooth Car-Kit
Vdd
Input
Enable
0.47 F 10K
VDD
+OUT
IN
-OUT
GND
33 H
0.47 F
33 H
0.47 F
Speaker
Power Analog Microelectronics, Inc.
CONFIDENTIAL. DO NOT DISTRIBUTE OR REPRODUCE WITHOUT PERMISSION FROM P.A.M.
CONFIDENTIAL INFORMATION
1
PAM8302 data sheet, Rev. 0.1
1 page  
www.DataSheet4U.com
PAM8302
Tiny Package 2 Watt Class-D Audio Amplifiers With Enable
OPERATION INFORMATION
Calculating Output Power of BTL amplifier
Vsupply
Vsat
Vsat
Vsupply
Output power is related to supply voltage and the saturation
voltage (Vsat). The Maximum peak-to-peak output voltage
on one side of BTL amplifier output is
Vpk-pk
Vp-p = ( Vsupply - 2 X Vsat )
Vrms = Vp-p
22
One side
Maximum output power of a BTL amplifier with 1% THD is
Pout (1%) = 4 X Vrms2/ Rload
Maximum output power of a BTL amplifier with 10% THD is
Pout (10%) = Pout (1%) X 1.25
Output Power vs. Vp-p
BTL Output Power
5.0
4.0
4
3.0
2.0
8
1.0
0.0
0
123
45
6
Vdd - Vsat (V)
Power Analog Microelectronics, Inc.
CONFIDENTIAL. DO NOT DISTRIBUTE OR REPRODUCE WITHOUT PERMISSION FROM P.A.M.
CONFIDENTIAL INFORMATION
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet PAM8302.PDF ] | |
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