PAM8908概述：
The PAM8908 is a 25mW stereo headphone driver is designed for portable equipment where board space is at a premium. The PAM8908 uses a unique, patent pending architecture to produce a ground-referenced output from a single supply,eliminating the need for large DC-blocking capacitors, saving cost, board space, and component height.
The PAM8908 delivers up to 25mW per channel into a 16 load and has low 0.03% THD+N. A high
power-supply rejection ratio allows this device to operate from noisy digital supplies without an additional linear regulator.
The PAM8908 operates from a single supply from 2.5V t o 5.5V, has sho rt-ci rcui t a nd over temperature protection. Shutdown mode reduces supply current to less than 1uA.
PAM8908特性：
Patent Pending 3 Phase Power Line Shift
Charge Pump Eliminates Need for DCBlocking Capacitors
TrueCapFree Architecture, Output Biased at
0V (System Ground)
Excellent Low Frequency Fidelity
High PSRR
Less Than 1uA Shutdown Current
Support Both Fully Differential and SingleEnded Inputs
Short Circuit and Over Temperature
Protection
Selectable Gain Settings:-6dB,0dB,3dB and
6dB
Available in Space Saving Packages:
TQFN3x3-16L
PAM8908应用：
Smart Phones/Cellular Phones
Notebook Computers
Portable DVD Player
Personal Digital Assistants (PDAs )
Electronic Dictionaries
Digital Still Cameras
Potable Gaming
PAM8908差分输入应用电路图：
PAM8908单端输入应用电路图：
PAM8908管脚定义：
PAM8908管脚说明：
PAM8908功能框图：
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