PAM8303D
Ultra Low EMI, 3W Filterless
Mono Class-D Audio Power Amplifier
Typical Operating Characteristics
17. OSC Frequency
300
290
280
Input ac-ground
T
A
=25 ° C, V
DD
=5V, f=1kHz, Gain=2V/V, unless otherwise noted
.
300
280
260
240
18. Rdson vs Supply Voltage
Isw=500mA
100% duty cycle
Frequency (KHz)
Rdson (mΩ)
270
260
250
240
230
220
210
200
2.7
3.4
4.1
Supply Voltage (V)
4.8
5.5
PMOS
220
200
180
160
140
120
100
3
3.5
4
Supply Voltage (V)
4.5
5
NOMS
19. Start-up from Shutdown
Output
SD
Test Setup for Performance Testing
PAM8303D Demo Board
Load
+OUT
AP System One
Generator
Input
AP
Low Pass
Filter
GND
-OUT
VDD
AUX-0025
AP System One
Analyzer
Power Supply
Notes
1. The AP AUX-0025 low pass filter is necessary for class-D amplifier measurement with AP analyzer.
2. Two 22μH inductors are used in series with load resistor to emulate the small speaker for efficiency
measurement.
Power Analog Microelectronics
,
Inc
www.poweranalog.com
09/2008 Rev 1.4
11
PAM [ POWER ANALOG MICOELECTRONICS ]
