器件名称: PAM8302AASCR
功能描述: 2.5W Filterless Class-D Mono Audio Amplifier
文件大小: 227.8KB 共14页
简 介:PAM8302A
2.5W Filterless Class-D Mono Audio Amplifier Key Features
n 2.5W Output at 10% THD with a 4 Ω Load and 5V 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 MSOP-8, SOP-8 and DFN3x3 Packages Available n Pb-Free Package
General Description
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. 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. The PAM8302A is available in MSOP-8, SOP-8 and DFN3x3 packages.
Applications
n n n n n n
PMP/MP4 GPS Portable Speakers Walkie Talkie Handsfree phones/Speaker Phones Cellular Phones
Typical Application
1μF
6
VDD Ci INDifferential Input Ci IN+ ON OFF Ri Ri
4
INVO-
8
3 1
PAM8302A
IN+ VO+ /SD GND
5
7
Power Analog Microelectronics , Inc www.poweranalog.com 1
09/2008 Rev 1.2
PAM8302A
2.5W Filterless Class-D Mono Audio Amplifier Block Diagram
VDD
IN+
MODULATOR
DRIVER
VO+ VO-
IN-
THERMAL PROTECTION
SD
SHUTDOWN
INTERNAL OSCILLATOR
SHORT PROTECTION
OSC
GND
Pin Configuration & Marking Information
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