CS42448_07 Datasheet, PDF (12/64 Pages) Cirrus Logic – 108 dB, 192 kHz 6-In, 8-Out CODEC

CS42448
ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE)
Test Conditions (unless otherwise specified): T_A = -40 to +85°C; VD = VLS = VLC = 3.3 V±5%, VA = 5 V±5%; Full-
scale input sine wave: 1 kHz through the active input filter in Figure 26 on page 53 and Figure 27 on page 53; Mea-
surement Bandwidth is 10 Hz to 20 kHz.
Parameter
Fs=48 kHz, 96 kHz, 192 kHz
Dynamic Range
A-weighted
unweighted
40 kHz bandwidth unweighted
Total Harmonic Distortion + Noise -1 dB
(Note 5)
-20 dB
-60 dB
40 kHz bandwidth
-1 dB
ADC1-3 Interchannel Isolation
ADC3 MUX Interchannel Isolation
DC Accuracy
Interchannel Gain Mismatch
Gain Drift
Analog Input
Full-Scale Input Voltage
Differential Input Impedance (Notes 6 & 8)
Single-Ended Input Impedance
(Notes 7 & 8)
Common Mode Rejection Ratio (CMRR)
Differential
Min
Typ
Max
97
105
-
94
102
-
-
99
-
-
-98
-90
-
-82
-
-
-42
-
-
-87
-
-
90
-
-
85
-
-
0.1
-
-
±100
-
1.04*VA 1.12*VA 1.20*VA
23
29
32
-
-
-
-
82
-
Single-Ended
Min
Typ
Max
94
102
-
91
99
-
-
96
-
-
-95
-87
-
-79
-
-
-39
-
-
-87
-
-
90
-
-
85
-
-
0.1
-
-
±100
-
0.52*VA 0.56*VA 0.60*VA
23
29
32
-
-
-
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ppm/°C
Vpp
kΩ
kΩ
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.
12
DS648F3