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參數資料
| 型號： | FAN3850AUC19X |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA6 |
| 封裝： | 1.26 X 0.86 MM, WLCSP-6 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 973K |
| 代理商： | FAN3850AUC19X |
February 2011
2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN3850A Rev. 3.0.1
FAN3850A
—
Microphone
Pre-Amp
lifier
with
Digita
lOutput
FAN3850A
Microphone Pre-Amplifier with Digital Output
Features
Optimized for Mobile Handset and Notebook PC
Microphone Applications
Accepts Input from Electret Condenser
Microphones (ECM)
Pulse Density Modulation (PDM) Output
Standard 5-Wire Digital Interface
19dB Gain Version Available(1)
Low Input Capacitance, High PSR, 20Hz
Pre-Amplifier
Low-Power 1.5A Sleep Mode
Typical 470A Supply Current
SNR of 61dB(A)
Total Harmonic Distortion 0.02%
Input Clock Frequency Range of 1-4MHz
Integrated Low Drop-Out Regulator (LDO)
Small 1.26mm x 0.86mm 6-Ball WLCSP Package
Description
The FAN3850A integrates a pre-amplifier, LDO, and
ADC that converts Electret Condenser Microphone
(ECM) outputs to digital Pulse Density Modulation
(PDM) data streams. The pre-amplifier accepts analog
signals from the ECM and drives an over-sampled
sigma delta Analog-to-Digital Converter (ADC) and
outputs PDM data. The PDM digital audio has the
advantage of noise rejection and easy interface to
mobile handset processors.
The FAN3850A features an integrated LDO and is
powered from the system supply rails up to 3.63V, with
low power consumption of only 0.85mW and less than
20μW in Power-Down Mode.
Applications
Electret Condenser Microphones with Digital Output
Mobile Handset
Headset Accessories
Personal Computer (PC)
.
Ordering Information
Part Number
Operating
Temperature Range
Package
Packing
Method
FAN3850AUC19X
-30°C to +85°C
6-Ball, Wafer-Level Chip-Scale Package (WLCSP)
3000 Units on
Tape & Reel
Note:
1.
Alternate gain options are possible. Please contact Fairchild.
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