User guide

DS679F1 13
CS42L51
ANALOG INPUT CHARACTERISTICS (COMMERCIAL - CNZ)
(Test Conditions (unless otherwise specified): Input sine wave (relative to digital full scale): 1 kHz through passive
input filter; Measurement Bandwidth is 10 Hz to 20 kHz unless otherwise specified. Sample Frequency = 48 kHz)
VA = 2.5 V (nominal) VA = 1.8 V (nominal)
Parameter (Note 5)
Min Typ Max Min Typ Max Unit
Analog In to ADC (PGA bypassed)
Dynamic Range A-weighted
unweighted
93
90
99
96
-
-
90
87
96
93
-
-
dB
dB
Total Harmonic Distortion + Noise -1 dBFS
-20 dBFS
-60 dBFS
-
-
-
-86
-76
-36
-80
-
-
-
-
-
-84
-73
-33
-78
-
-
dB
dB
dB
Analog In to PGA to ADC
Dynamic Range
PGA Setting: 0 dB A-weighted
unweighted
92
89
98
95
-
-
89
86
95
92
-
-
dB
dB
PGA Setting: +12 dB A-weighted
unweighted
85
82
91
88
-
-
82
79
88
85
-
-
dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB -1 dBFS
-60 dBFS
-
-
-88
-35
-81
-
-
-
-86
-32
-80
-
dB
dB
PGA Setting: +12 dB -1 dBFS
- -85 -79 - -83 -77 dB
Analog In to MIC Pre-Amp (+16 dB) to PGA to ADC
Dynamic Range
PGA Setting: 0 dB A-weighted
unweighted
-
-
86
83
-
-
-
-
83
80
-
-
dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB -1 dBFS
--76- --74-dB
Analog In to MIC Pre-Amp (+32 dB) to PGA to ADC
Dynamic Range
PGA Setting: 0 dB A-weighted
unweighted
-
-
78
74
-
-
-
-
75
71
-
-
dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB -1 dBFS
--74- --71-dB
Other Characteristics
DC Accuracy
Interchannel Gain Mismatch
-0.2- -0.2-dB
Gain Drift
- ±100 - - ±100 - ppm/°C
Offset Error SDOUT Code with HPF On
- 352 - - 352 - LSB
Input
Interchannel Isolation
-90- -90-dB
DAC Isolation (Note 4)
-70- -70-dB
Full-scale Input Voltage ADC
PGA (0 dB)
MIC (+16 dB)
MIC (+32 dB)
0.74•VA
0.75•VA
0.78•VA
0.794•VA
0.129•VA
0.022•VA
0.82•VA
0.83•VA
0.74•VA
0.75•VA
0.78•VA
0.794•VA
0.129•VA
0.022•VA
0.82•VA
0.83•VA
Vpp
Vpp
Vpp
Vpp
Input Impedance (Note 6) ADC
PGA
MIC
-
-
-
20
39
50
-
-
-
-
-
-
20
39
50
-
-
-
kΩ
kΩ
kΩ