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DS851F2 15
CS42L56
Dynamic Range A-weighted
unweighted
89
86
95
92
-
-
86
83
92
89
-
-
dB
dB
Total Harmonic Distortion + Noise -1 dBFS
-20 dBFS
-60 dBFS
-
-
-
-85
-72
-32
-79
-
-26
-
-
-
-85
-69
-29
-79
-
-23
dB
dB
dB
Analog In to PGA to ADC, PREAMPx[1:0]=00 (0 dB Gain + PGA Setting)
Dynamic Range
PGA Setting: 0 dB A-weighted
unweighted
88
85
94
91
-
-
85
82
91
88
-
-
dB
dB
PGA Setting: +12 dB A-weighted
unweighted
81
78
87
84
-
-
78
75
84
81
-
-
dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB -1 dBFS
-60 dBFS
-
-
-87
-31
-81
-25
-
-
-85
-28
-79
-22
dB
dB
PGA Setting: +12 dB -1 dBFS - -83 -77 - -81 -75 dB
Common Mode Rejection (Note 5) -66- -66-dB
Analog In to PGA to ADC, PREAMPx[1:0]=01 (+10 dB Gain + PGA Setting)
Dynamic Range
PGA Setting: 0 dB A-weighted
unweighted
-
-
91
88
-
-
-
-
88
86
-
-
dB
dB
PGA Settin
g:
+12 dB A-weighted
unweighted
-
-
81
78
-
-
-
-
78
75
-
-
dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB -1 dBFS - -77 - - -77 - dB
PGA Setting: +12 dB -1 dBFS - -64 - - -64 - dB
Common Mode Rejection (Note 5) -66- -66-dB
Analog In to PGA to ADC, PREAMPx[1:0]=10 (+20 dB Gain + PGA Setting)
Dynamic Range
PGA Setting: 0 dB A-weighted
unweighted
-
-
85
82
-
-
-
-
82
79
-
-
dB
dB
PGA Setting: +12 dB A-weighted
unweighted
-
-
73
70
-
-
-
-
70
67
-
-
dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB -1 dBFS - -71 - - -71 - dB
PGA Setting: +12 dB -1 dBFS - -63 - - -63 - dB
Common Mode Rejection (Note 5) -58- -58-dB
DC Accuracy
Interchannel Gain Mismatch - 0.2 - - 0.2 - dB
Gain Drift - ±100 - - ±100 - ppm/°C
Offset Error (Note 6) -352- -352-LSB
Input
Interchannel Isolation (1 kHz) (Note 7) -90- -90-dB
HP Amp to Analog Input Isolation R
L
= 3 k
R
L
= 16
-
-
90
83
-
-
-
-
90
83
-
-
dB
dB
Full-scale Input Voltage ADC
PGA (-1.5 dB)
PGA (0 dB)
PGA (+12 dB)
0.76•VA
0.78•VA
0.80•VA
0.95•VA
0.82•VA
0.198•VA
0.84•VA
0.86•VA
0.76•VA
0.78•VA
0.80•VA
0.95•VA
0.82•VA
0.198•VA
0.84•VA
0.86•VA
Vpp
Vpp
Vpp
ANALOG INPUT CHARACTERISTICS (CONTINUED)
Test Conditions (unless otherwise specified): Connections to the CS42L56 are shown in the “Typical Connection Diagrams” on
page 11; Input test signal is a 1 kHz sine wave through the passive input filter, PGA = 0 dB; All Supplies = VA;
GND = AGND = 0 V; T
A
=+25C; Measurement bandwidth is 20 Hz to 20 kHz; Sample Frequency = 48 kHz. Measurement sig-
nal path is AINxx to SDOUT.