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Teilenummer | PAM8301 |
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Beschreibung | Filterless Class-D Mono Audio Amplifier | |
Hersteller | Power Analog Micoelectronics | |
Logo | ||
Gesamt 11 Seiten PAM8301
Filterless Class-D Mono Audio Amplifier
Key Features
n 1.5W Output at 10% THD with a 8Ω Load
www.datasheeat4nud.c5omV Power Supply
n Filterless, Low Quiescent Current and Low
EMI
n High Efficiency up to 88%
n Superior Low Noise
n Short Circuit Protection
n Thermal Shutdown
n Few External Components to Save Space
and Cost
n Tiny SOT23-6 Package
n Pb-Free Package
Applications
n PMP/MP4
n GPS
n Portable Speakers
n Walkie Talkie
n Handsfree phones/Speaker Phones
n Cellular Phones
General Description
The PAM8301 is a 1.5W class-D mono audio
amplifier. Its low THD+N feature offers high-
quality sound reproduction. The new filterless
architecture allows the device to drive speaker
directly instead of using low-pass output filters,
therefore save system cost and PCB area.
With the same number of external components,
the efficiency of the PAM8301 is much better than
that of class-AB cousins. It can optimize battery
life thus is ideal for portable applications.
The PAM8301 is available in SOT23-6 package.
Typical Application
VDD
10μF
Audio
3
IN
0.1μF
5
VDD
1μF
OUT+ 6
PAM8301
Shutdown
4
/SD
GND
2
OUT- 1
Power Analog Microelectronics,Inc
www.poweranalog.com
1
09/2008 Rev 1.2
PAM8301
Filterless Class-D Mono Audio Amplifier
Typical Performance Characteristic
TA=25°C,unless otherwise noted.
www.datash7e.etT4uH.cDom+N VS Frequency
10 RL=8Ω, Gain=23dB, Cin=0.1μF,
5 V =DD 5V,Po=500mW
8. THD+N VS Frequency
10 RL=16Ω, Gain=23dB, Cin=0.1μF,
5 V =DD 5V,Po=500mW
2
%1
0.5
0.2
0.1
0.06
20
50 100 200
500 1k
Hz
2k
5k 10k 20k
2
1
% 0.5
0.2
0.1
0.05
0.03
20
50 100 200
500
Hz
1k
2k
5k 10k 20k
9. THD+N VS Frequency
10
RL=8Ω, Gain=23dB, Cin=0.1μF,
5 V =DD 3.6V,Po=200mW
2
1
%
0.5
0.2
0.08
20
50 100 200
500 1k
Hz
2k
10. THD+N VS Frequency
10
RL=16Ω, Gain=23dB, Cin=0.1μF,
5 V =DD 3.6V,Po=200mW
2
1
%
0.5
0.2
5k 10k 20k
0.08
20
50 100 200
500
Hz
1k
2k
5k 10k 20k
11. Frequency Response
+ 50
RL=16Ω, Cin=0.1μF,V =DD 5V
+ 45
+ 40
+ 35
d +30
B
r +25
A +20
+ 15
+ 10
+5
+0
20
50 100 200
500 1k
Hz
2k
5k 10k 20k
12. Noise Floor
+0
Inputs floating, RL=8Ω, Cin=0.1μF,VDD=5V
-20
-40
d -60
B
V -80
-100
-120
-140
20
50 100 200
500 1k
2k
5k 10k 20k
Hz
Power Analog Microelectronics,Inc
www.poweranalog.com
6
09/2008 Rev 1.2
6 Page | ||
Seiten | Gesamt 11 Seiten | |
PDF Download | [ PAM8301 Schematic.PDF ] |
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