CS42432
ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE)
(Test Conditions (unless otherwise specified): T = -40 to +85°C; VD = VLS = VLC = 3.3 V±5%, VA = 5 V±5%;
A
Full-scale input sine wave: 1 kHz through the active input filter in Figure 19 on page 48 and Figure 20 on page 48;
Measurement Bandwidth is 10 Hz to 20 kHz.)
Differential
Typ
Single-Ended
Typ
Parameter
Fs=48 kHz, 96 kHz
Dynamic Range
Min
Max
Min
Max
Unit
A-weighted
unweighted
97
94
-
105
102
99
-
-
-
94
91
-
102
99
96
-
-
-
dB
dB
dB
40 kHz bandwidth unweighted
Total Harmonic Distortion + Noise
(Note 5)
-1 dB
-20 dB
-60 dB
-1 dB
-
-
-
-
-98
-82
-42
-87
-90
-
-
-
-
-95
-79
-39
-87
-87
dB
dB
dB
dB
-
-
-
-
-
-
40 kHz bandwidth
ADC1-2 Interchannel Isolation
DC Accuracy
-
90
-
-
90
-
dB
Interchannel Gain Mismatch
Gain Drift
-
-
0.1
-
-
-
-
0.1
-
-
dB
±100
±100
ppm/°C
Analog Input
Full-Scale Input Voltage
1.04*VA 1.12*VA 1.20*VA 0.52*VA 0.56*VA 0.60*VA
Vpp
Differential Input Impedance (Notes 6 & 8)
23
29
32
-
23
-
-
29
-
-
32
-
kΩ
Single-Ended Input Impedance
(Notes 7 & 8)
-
-
-
kΩ
Common Mode Rejection Ratio (CMRR)
-
82
-
dB
Notes:
5. Referred to the typical full-scale voltage.
6. Measured between AINx+ and AINx-.
7. Measured between AINxx and AGND.
8. The input impedance scales inversely proportionate to the sample rate of the ADC modulator.
DS673F2
15