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This literature is subject to all applicable copyright laws and is not for resale in any manner.FAN3850A Microphone Pre-Amplifier with Digital Output August 2016 FAN3850A Microphone Pre-Amplifier with Digital Output Features Description The FAN3850A integrates a pre-amplifier, LDO, and Optimized for Mobile Handset and Notebook PC ADC that converts Electret Condenser Microphone Microphone Applications (ECM) outputs to digital Pulse Density Modulation Accepts Input from Electret Condenser (PDM) data streams. The pre-amplifier accepts analog Microphones (ECM) signals from the ECM and drives an over-sampled sigma delta Analog-to-Digital Converter (ADC) and Pulse Density Modulation (PDM) Output outputs PDM data. The PDM digital audio has the Standard 5-Wire Digital Interface advantage of noise rejection and easy interface to mobile handset processors. 16dB Gain The FAN3850A features an integrated LDO and is Low Input Capacitance, High PSR, 20 kHz powered from the system supply rails up to 3.63 V, with Pre-Amplifier low power consumption of only 0.85 mW and less than Low-Power 1.5 A Sleep Mode 20 W in Power-Down Mode. Typical 470 A Supply Current Applications SNR of 62 dB(A) for 16 dB Gain Respectively Total Harmonic Distortion 0.02% Electret Condenser Microphones with Digital Output Input Clock Frequency Range of 1-4 MHz Mobile Handset Integrated Low Drop-Out Regulator (LDO) Headset Accessories Small 1.26 mm x 0.86 mm 6-Ball WLCSP Package Personal Computer (PC) . Ordering Information Operating Packing Part Number Package Temperature Range Method 3000 Units on FAN3850AUC16X -30C to +85C 6 Ball, Wafer-Level Chip-Scale Package (WLCSP) Tape & Reel 2016 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN3850A Rev. 1.6