描述
PAM8908是DirectPath? 立体声耳机放大器，无需使用外部直流阻隔输出电容器。差动立体声输入和内置电阻设置器件增益，进一步减少了外部组件数。增益可以选择 –6dB、0dB、3dB 或 6dB。该放大器使用单个 2.3V 电源为 16Ω 扬声器提供 25mW 功率。PAM8908提供独立于电源电压的恒定最大输出功率，从而为防声震设计提供了方便。
PAM8908采用全差动输入，以减少音频源与耳机放大器之间的系统噪声拾取。高电源噪声抑制性能和差动架构增加了噪声抗扰度。对于单端输入信号，请将 INL+ 和 INR+ 接地。该器件具有内置杂音抑制电路，可以完全消除开启和关闭期间的噼啪噪声干扰。放大器输出具有短路和过热保护以及 ?8 kV HBM ESD 保护，简化了终端设备符合 IEC 61000-4-2 ESD 标准的工作。PAM8908通过单个 2.3V 至 5.5V 电源供电，电源电流为 2.1mA 至 1?A。完全兼容TPA6132A2。
特性
采用 DirectPath? 专利技术，无需输出偏置为 0V 的直流阻隔电容器
卓越的低频保真度
喀嗒/噼啪噪声抑制活动
电源电流通常为 2.1mA
全差动或单端输入
内置电阻减少了组件数
改善了系统噪声性能
2.3V 至 5.5V 电源提供恒定最大输出功率
简化了设计以防声震
改善了 RF 噪声抗扰度
符合 Microsoft? Windows Vista要求
高电源噪声抑制
在 217Hz 时为 100dB PSRR
在 10kHz 时为 90dB PSRR
宽电源范围：2.3V 至 5.5V
增益设置：–6dB、0dB、3dB 和 6dB
短路和过热保护
8kV HBM ESD 保护输出
提供小封装
16 引脚，3mm × 3mm 超薄 QFN
Description
The PAM8901 / PAM8908 stereo headphone driver is designed for
portable equipment where board space is at a premium. The
PAM8901 / 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 PAM8901 / PAM8908 delivers up to 25mW per channel into a
16Ω load and has low 0.03% THD+N. A high power-supply rejection
ratio (80dB at 1kHz) allows this device to operate from noisy digital
supplies without an additional linear regulator.
The PAM8901 / PAM8908 operates from a single supply from 2.5V t o
5.5V, has short-circuit and over temperature protection. Shutdown
mode reduces supply current to less than 1μA.
Features
• Patent Pending 3 Phase Power Line Shift Charge Pump
Eliminates Need for DC-Blocking Capacitors
• TrueCapFree Architecture, Output Biased at 0V (System
Ground)
• Excellent Low Frequency Fidelity
• 80dB PSRR at 1kHz
• Less than 1uA Shutdown current
• Support both Fully differential and Single-Ended Inputs
• Short Circuit and Over Temperature Protection
• Selectable Gain settings:-6dB,0dB,3dB and 6dB
• Available in Space Saving Packages: TQFN3x3-16L
Applications
• Smart Phones/Cellular Phones
• Notebook Computers
• Portable DVD Player
• Personal Digital Assistants (PDAs )
• Electronic Dictionaries
• Digital Still Cameras
• Portable Gaming
深圳市龙创威电子有限公司(LONGPOWER ELECTRONICS Co.,LTD)创建于2009年，是一家专业化的电子元件供应商，现为美资企业Diodes授权代理商。产品应用领域涵盖音箱、LED、电源及计算机周边等消费性产品。
公司主要经营音频功放和LED产品的开发和销售，主要产品包括LED DRIVER，D类音频功放，DC/DC系列，LDO系列，MOSFET，二三极管等。
公司一贯坚持客户的需求就是公司的追求目标，拥有一流的生产管理体系，提供一流的售后技术服务。
选择我们的产品，是您对我们的信赖！
提供满意的产品，是我们对您的保证！
ShenZhen LongPower Electronic Co.,LTD, founded at 2009, is a professional distributor of electronic component serves from Diodes, American Enterprise.
Our products are used in speakers、LED、batteries and computer peripheral etc.consumer clectronics products.
Our company is focused on developing and selling Audio power amplifier and LED products. The main products include LED Drivers, Class D Audio,DC/DC series, LDO series,MOSFET,Diode & Triode etc.
Customer`s demands are our first priority. We have the first class system of production and management and offer the first class of consumer service.
Your choice of our products, is trust for us;
Our offer of good quality products, is a guarantee for you!
我司主要产品：
LED驱动
PAM2803 PAM2804 PAM2808 PAM2841 PAM2842 PAM2861 PAM2863 AL8808 AL8807 AL8805
D类音频功率放大器
PAM8003 PAM8004 PAM8006A PAM8007 PAM8008 PAM8945 PAM8416
PAM8302A PAM8302A PAM8303C/D PAM8320 PAM8403H PAM8404 PAM8406 PAM8408 PAM8603M PAM8610 PAM8620 PAM8803 PAM8902 PAM8908
DC/DC一直流变换器
PAM2301 PAM2305 PAM2312 PAM2421 PAM2431
LDO-低压降线性稳压器
PAM3101 PAM3103
DIODES 二三极管 MOS管:
BSS138 2N7002 DMG6968U B340A SBR3U30P1 AP733-33SAG-7
AP2210K-3.3TRG1 AP2204K-3.3TRG1 AP5100WG-7 AP4313KTR-G1
SBR10E45P5-13 AP2112K-3.3TRG1 AP2151WG-7 AP2171WG-7
AP8802SPG-13 S1D-13-F DMP2160U-7 DMG3414-7 SBR1045CTL-13
DFLS260-7
MIXINNO 功放：
MIX2008 MIX2036 MIX2009A MIX2029 MIX2018A MIX2039 MIX2015A
MIX2032 MIX2051 MIX2802 MIX2807 MIX2808 MIX3008 MIX3018
MIX3805
MIX2905 MIX2902 MIX3901 PT2399
MIX2005 MIX2037 MIX2025 MIX2022 MIX2001A MIX2028 MIX2052
MIX2050 MIX2801 MIX3007 MIX3001 MIX3006 MIX3013 MIX3004
MIX3015A MIX2601 MIX3015 MIX3602 MIX3806
MIX2908 MIX3903 MIX3902
MIX2071 MIX2002 MIX7001
MIX6001 MIX6003
