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参数资料
| 型号： | FAB3103UCX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUD 2.3W CLASS D 12-WLCSP |
| 标准包装： | 1 |
| 类型： | D 类 |
| 输出类型： | 1-通道（单声道） |
| 在某负载时最大输出功率 x 通道数量： | 2.3W x 1 @ 8 欧姆 |
| 电源电压： | 2.5 V ~ 5.2 V |
| 特点： | AGC，无噪音，差分输入，短路保护和热保护，关断 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 12-WLCSP |
| 封装/外壳： | 12-UFBGA，WLCSP |
| 包装： | 标准包装 |
| 其它名称： | FAB3103UCXFSDKR |
2011 Fairchild Semiconductor
www.fairchildsemi.com
FAB3103 Rev. 1.0.2
FAB31
0
3
—
2.3
Watt
Class-D
Audio
Amp
lifier
with
Integrated
Boost
Regu
lator
and
Automatic
Gain
Cont
rol
July 2012
FAB3103
2.3 Watt Class-D Audio Amplifier with Integrated
Boost Regulator and Automatic Gain Control
Features
High Output, Low Distortion Class-D Mono
Speaker Amplifier
o
2.3W into 8 from 3.6V Supply (10% THD+N)
o
1.85W into 8 from 3.6V Supply (1% THD+N)
o
0.01% THD+N into 8 (100mW)
High-Efficiency Boost Regulator Provides Higher
Output Power Over Li-Ion Battery Voltages
o
85% Total Efficiency (3.6V, 8, PO = 1.0W)
Adaptive Boost Shutdown at Lower Output Power
Increases Efficiency and Reduces Quiescent
Current Consumption:
o
IDD = 2.7mA from 3.6V Supply
Automatic Gain Control (AGC) Monitors Battery
Voltage and Dynamically Adjusts Gain, Extending
Battery Runtime
Reduced Noise Floor Enhances Audio Playback
o
38V Output Noise (A-Weighted)
o
100dB SNR (A-Weighted)
Low-EMI Design Allows Filterless Operation
High-Power Supply Ripple Rejection:
o
88dB PSRR (fRIPPLE = 217Hz, Boost Enabled)
o
70dB PSRR (fRIPPLE = 217Hz, Boost Bypassed)
High Noise Rejection Using Differential
Audio Inputs:
o
75dB CMRR (fIN = 1kHz)
o
71dB CMRR (fIN = 217Hz)
Short-Circuit Protection
Under-Voltage Protection
“Click and Pop” Suppression
Available in 12-Bump, 0.5mm Pitch, WLCSP
o
Space-Saving 1.86mm x 1.44mm Package
Description
The FAB3103 is a mono Class-D audio amplifier with
an integrated boost regulator that achieves high output
audio over a power supply range of 2.5V to 5.2V.
Automatic Boost Shutdown dynamically shuts down
the boost regulator at low output power for greater
efficiency and lower quiescent current consumption.
Automatic Gain Control (AGC) monitors the battery
and reduces gain as the battery voltage drops to limit
maximum current consumption, extending battery
runtime and preventing mobile device shutdown.
Applications
Smart Phones, Feature Phones
Tablets, Portable Gaming Devices
GPS, Active Speakers
Figure 1. Typical Application Circuit
Ordering Information
Part Number
Operating Temperature Range
Package
Packing Method
FAB3103UCX
-40°C to +85°C
12-Bump, 0.5mm Pitch, Wafer-Level
Chip-Scale Package (WLCSP)
3000 Units
on Tape & Reel
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