Cirrus Logic CS42L56 - Manual (Page 15)

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 Setting: +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
= +25 C; Measurement bandwidth is 20 Hz to 20 kHz; Sample Frequency = 48 kHz. Measurement sig-
nal path is AINxx to SDOUT.