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FAN3850A Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FAN3850A Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 11 page July 2011 © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN3850A • Rev. 3.0.6 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 16dB and 19dB Gain Versions Available(1) Low Input Capacitance, High PSR, 20kHz Pre-Amplifier Low-Power 1.5μA Sleep Mode Typical 470μA Supply Current SNR of 62/61dB(A) for 16/19dB Gain Respectively 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 20W 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 FAN3850AUC16X -30°C to +85°C 6 Ball, Wafer-Level Chip-Scale Package (WLCSP) 3000 Units on Tape & Reel 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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