User Manual

VS1003
4 CHARACTERISTICS & SPECIFICATIONS
4.7 Typical characteristics
4.7.1 Line input ADC
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1
dB
input voltage (rms)
SNR
SNRa
THD
Figure 1: Measured ADC performance of the LINEIN pin.
Measured ADC performance of the LINEIN pin. X-axis is rms amplitude of 1 kHz sine input.
Curves are unweighted signal-to-noise ratio (blue), A-weighted signal-to-noise ratio (green),
and unweighted signal-to-distortion ratio (red). Sampling rate of ADC is 48 kHz (master clock
12.288 MHz), noise calculated from 0 to 20 kHz.
4.7.2 Microphone input ADC
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1
dB
input voltage (rms)
SNR
SNRa
THD
Figure 2: Measured ADC performance of the MIC pins (differential).
Measured ADC performance of the MIC pins (differential). Other settings same as in Fig. 1.
Version: 1.08, 2014-12-19 10