PAM8302AASCR中文资料

No input, f=1kHz, Vpp=200mV f=20 to 20kHz f =20 to 20kHz No A-weighting A-weighting
IDS=100mA
P MOSFET N MOSFET
MIN 2.5
45 200 1.2
TYP
4
2.50 1.25 2.00 0.95 1.50 0.80 1.30 0.65
With the same number of external components, the efficiency of the PAM8302A is much better than that of class-AB cousins. It can optimize battery life thus is ideal for portable applications.
Pin Number 1 2 3 4 5 6 7 8
Pin name SD NC IN+ INVO+ VDD GND VO-
Description Shutdown terminal ,active low No connection Positive differential input Negative differential input Positive BTL output Analog power supply Ground Negative BTL output
Top View DFN3x3
SD 1 NC 2 IN+ 3 IN- 4
P8302A XXXXYW
8 VO7 GND 6 VDD 5 VO+
SD 1 NC 2 IN+ 3 IN- 4
P8302A XXXXYW
8 VO7 GND 6 VDD 5 VO+
X: Internal Code Y: Year W: Week
1 /SD
VO+ 5
GND
7
Power Analog Microelectronics,Inc
1
09/2008 Rev 1.2
元器件交易网 Block Diagram
PAM8302A
2.5W Filterless Class-D Mono Audio Amplifier
4
09/2008 Rev 1.2
元器件交易网
PAM8302A
2.5W Filterless Class-D Mono Audio Amplifier
Typical Performance Characteristics
TA=25 OC, unless otherwise noted.
0. 0 2
0. 0 1 20
50 100 200
500 1k
2k
Hz
5k 10k 20k
THD+N VS Frequency RL=4Ω, Cin=0.1μF, Gain=23dB, V = DD 5V
10
5
2
1 0.5 % 0.2 0.1
0.05
Po=500mW Po=200mW
These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground.
THD+N VS Output Power RL=8Ω, Gain=23dB, f=1kHz
50
THD+N VS Output Power RL=4Ω, Gain=23dB, f=1kHz
50
20
VDD=3.6V
20
10
10
VDD=4.2V
5
5
VDD=3.6V VDD=4.2V
%
2
1
0.5
0.2
VDD=5V
Recommended Operating Conditions
Supply voltage Range........................2.5V to 5.5V Max. Supply Voltage (for Max. duration of
30 minutes)................................................6.0V
SYMBOL VDD IQ ISHDN
PO
η
THD+N
Gv PSRR Dyn SNR
Vn fOSC RDS(ON) VS H VSL OTP OTH
CONDITIONS
No Load
VSHDN=0V
f=1kHz, RL=4Ω VDD=5V
THD+N=10%
VDD=3.6V
f=1kHz, RL=4Ω VDD=5V
Ambient Operation Temperature Range......................................... -40°Cto 85°C
Junction Temperature Range.........-40°C to 125°C
Thermal Information
3
09/2008 Rev 1.2
元器件交易网
PAM8302A
2.5W Filterless Class-D Mono Audio Amplifier
Electrical Characteristic
VDD=5V, Gain = 24dB, RL=4Ω,TA=25°C，unless otherwise noted.
0.1 20m
50m
10m0 20m0
50m0
1
W
23
THD+N VS Frequency RL=8Ω, Cin=0.1μF, Gain=23dB, V = DD 5V
10
5
2
1
%
0. 5
0. 2 0. 1 0.05
Po=500mW Po=200mW
0.02 20
50 100 200
500 1k
2k
Parameter
Symbol
Thermal Resistance
(Junction to ambient)
θJA
Package
SOP-8 MSOP-8 DFN 3x3-8
Maximum
115 180 47.9
Unit
°C/W °C/W °C/W
Power Analog Microelectronics,Inc
元器件交易网
PAM8302A
2.5W Filterless Class-D Mono Audio Amplifier
Key Features
n 2.5W Output at 10% THD with a 4Ω Load and 5V Power Supply
n Filterless, Low Quiescent Current and Low EMI
Supply Voltage at no Input Signal...................6.6V Input Voltage.............................-0.3V to V + DD 0.3V
Maximum Junction Temperature..................150°C Storage Temperature.....................-65°C to 150°C Soldering Temperature.......................300°C,5sec
85 0.30 0.45 0.35 0.40
24 50 90 80 180 120 250 0.45 0.20
135 30
MAX 5.5 8 1
UNITS V mA μA
W
88
%
%
dB dB dB dB
μV
300 kHz
Ω
V
0.4
V
°C
°C
Power Analog Microelectronics,Inc
The PAM8302A is a 2.5W class-D mono audio amplifier. Its low THD+N feature offers highquality 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.
THD+N=1%
VDD=3.6V
f=1kHz, RL=8Ω VDD=5V
THD+N=10%
VDD=3.6V
F=1kHz, RL=8Ω VDD=5V
THD+N=1%
VDD=3.6V
f=1kHz
RL = 8Ω，PO=0.1W, f=1kHz RL = 8Ω，PO=0.5W, f=1kHz RL = 4Ω，PO=0.1W, f=1kHz RL = 4Ω，PO=0.5W, f=1kHz
VDD
IN+ IN-
MODULATOR
DRIVER
THERMAL PROTECTION