User Manual

Stereo Module

2015 Microchip Technology Inc.
Page 20
P
reliminary
Edition
Table 3-6: AUDIO CODEC ANALOGUE TO DIGITAL CONVERTER
T= 25
o
C, V
dd
=3.0V, 1KHz sine wave input, Bandwidth = 20Hz~20KHz
Parameter (Condition)
Min.
Typ.
Max.
Unit
Resolution 16 Bits
Output Sample Rate 8 48 KHz
Signal to Noise Ratio
Note: 1
(SNR @MIC or Line-in mode)
88 dB
Digital Gain -54 4.85 dB
Digital Gain Resolution 2~6 dB
MIC Boost Gain 20 dB
Analog Gain 60 dB
Analog Gain Resolution 2.0 dB
Input full-scale at maximum gain (differential) 4
mV
rms
Input full-scale at minimum gain (differential) 800
mV
rms
3dB bandwidth 20 KHz
Microphone mode (input impedance) 24 KΩ
THD+N (microphone input) @30mVrms input
0.02
%
Note:
(1) f
in
=1KHz, B/W=20~20KHz, A-weighted, THD+N < 1%, 150mV
pp
input
(2) These parameters are characterized but not tested in manufacturing.