Microphone Pre-Amplifier - ON Semiconductor
Description
Microphone Pre-Amplifier with Digital Output
FAN3852
Description The FAN3852 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 FAN3852 features an integrated LDO and is powered from the system supply rails up to 3.
63 V, with low power consumption of only 0.
85 mW and less than 20 mW in Power−Down Mode.
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 • Low Input Capacitance, High PSR, 20 kHz Pre−Amplifier • Low−Power 1.
5 mA Sleep Mode • Typical 420 mA Supply Current • SNR of 62 dB (A) for 16 dB Gain • Total Harmonic Distortion 0.
02% • Input Clock Frequency Range of 1−4 MHz • Integrated Low Drop−Out Regulator (LDO) • Small 1.
242 mm × 0.
842 mm 6−Ball, 0.
400 mm pitch standard
WLCSP Package
• 1.
5 kV HBM ESD on MIC Input
Typical Applications
• Electret Condenser Microphones with Digital Output • Mobile Handset • Headset Accessories • Personal Computer (PC)
www.
onsemi.
com
WLCSP−6 CASE 567TS
CLOCK A1 A2 SELECT
GND
B1
B2 INPUT
DATA C1
C2 VDD
Top View PIN CONFIGURATION
MARKING DIAGRAM
Pin A1
VK&K &.
&2&Z
VK
= Device Identifier
K
= Lot Run Code
.
= Pin A1 Mark
2
= Date Code
Z
= Plant Code
ORDERING INFORMATION
See detailed ordering and shipping information on page 2 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
1
June, 2021 − Rev.
4
Publication Order Number: FAN3852/D
FAN3852
ORDERING INFORMATION Part Number
FAN3852UC16X
Operating Temperature Range −40°C to 85°C
Package
6 Ball, Wafer−Level Chip−Scale Pac...
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