CXD3018Q/R
1-bit DAC and LPF Block Analog Characteristics
Analog characteristics (VDD = AVDD = 3.3V, VSS = AVSS = 0V, Ta = 25°C)
Item
Symbol
THD
Crystal
384Fs
768Fs
384Fs
768Fs
Min.
Typ.
Max.
Unit
%
Conditions
1kHz, 0dB data
0.0080 0.0120
0.0080 0.0120
102
Total harmonic
distortion
98
98
Signal-to-noise
ratio
1kHz, 0dB data
(Using A-weighting filter)
S/N
dB
102
Fs = 44.1kHz in all cases.
The total harmonic distortion and signal-to-noise ratio measurement circuits are shown below.
27k
AOUT1 (2)
330pF
27k
27k
SHIBASOKU (AM51A)
Audio Analyzer
AIN1 (2)
68pF
LOUT1 (2)
22µF
100k
LPF external circuit diagram
768Fs/384Fs
Rch
A
B
DATA
RF
Audio Analyzer
TEST DISC
CXD3018Q/R
Lch
Block diagram of analog characteristics measurement
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ETC [ ETC ]
