CS42L51
ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE - DNZ)
(Test Conditions (unless otherwise specified): All supplies = VA = 2.5 V and 1.8 V; Input sine wave (relative to full-
scale): 1 kHz through passive input filter; Measurement Bandwidth is 10 Hz to 20 kHz unless otherwise specified.
Sample Frequency = 48 kHz)
VA = 2.5V
Typ
VA = 1.8V
Typ
Parameter (Note 4)
Min
Max
Min
Max
Unit
Analog In to ADC
Dynamic Range
A-weighted
unweighted
91
78
99
96
-
-
88
85
96
93
-
-
dB
dB
Total Harmonic Distortion + Noise
-1 dB
-20 dB
-60 dB
-
-
-
-86
-76
-36
-78
-
-
-
-
-
-84
-73
-33
-76
-
-
dB
dB
dB
Analog In to PGA to ADC
Dynamic Range
PGA Setting: 0 dB
A-weighted
unweighted
90
87
98
95
-
-
87
84
95
92
-
-
dB
dB
PGA Setting: +12 dB
A-weighted
unweighted
83
80
91
88
-
-
80
77
88
85
-
-
dB
dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB
-1 dB
-60 dB
-
-
-88
-35
-80
-
-
-
-86
-32
-78
-
dB
dB
PGA Setting: +12 dB
-1 dB
-
-85
-77
-
-83
-75
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 dB
-
-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 dB
-
-74
-
-
-71
-
dB
Other Characteristics
DC Accuracy
Interchannel Gain Mismatch
Gain Drift
-
-
0.1
-
-
-
-
0.1
-
-
dB
±100
±100
ppm/°
C
Input
Interchannel Isolation
DAC Isolation (Note 5)
Full-scale Input Voltage (Note 7)
Input Impedance (Note 6)
-
-
90
70
-
-
-
-
90
70
-
-
dB
dB
0.70•VA 0.72•VA 0.75•VA 0.70•VA 0.72•VA 0.75•VA
Vpp
kΩ
ADC
PGA
MIC
18
40
50
-
-
-
-
-
-
18
40
50
-
-
-
-
-
-
kkΩΩ
Notes:
4. Referred to the typical full-scale voltage.
5. Measured with DAC delivering full-scale output power into 16 Ω.
14
DS679A2
CIRRUS [ CIRRUS LOGIC ]
