User guide
DS900F1 12
CS4244
ANALOG INPUT CHARACTERISTICS (AUTOMOTIVE GRADE)
Test Conditions (unless otherwise specified): Device configured as shown in Section 2. on page 7. Input sine
wave: 1 kHz; VA_SEL = 0 for VA = 3.3 VDC, 1 for VA = 5.0 VDC.; T
A
= -40 to +85 C; Measurement Bandwidth is
20 Hz to 20 kHz unless otherwise specified; Sample Rate = 48 kHz; all Power Down ADCx bits = 0.
Notes:
13. AINx+ connected to AINx-.
14. Valid with the recommended capacitor values on FILT+ and VQ. See Figure 4 for test configuration.
VA, VREF = 3.3 V VA, VREF = 5.0 V
Parameter
Min Typ Max Min Typ Max Unit
Dynamic Range
A-weighted
unweighted
93
90
101
98
-
-
97
94
105
102
-
-
dB
dB
Total Harmonic Distortion + Noise
-1 dBFS
-60 dBFS
-
-
-95
-38
-87
-30
-
-
-88
-42
-80
-34
dB
dB
Other Analog Characteristics
Interchannel Gain Mismatch - 0.2 - - 0.2 - dB
Gain Drift - ±100 - - ±100 -
ppm/°C
Offset Error (Note 13)
High Pass Filter On
High Pass Filter Off
-
-
0.0001
0.25
-
-
-
-
0.0001
0.25
-
-
% Full Scale
% Full Scale
Interchannel Isolation - 90 - - 90 - dB
Full-scale Input Voltage
(Differential Inputs) 1.58•VA 1.66•VA 1.74•VA 1.58•VA 1.66•VA 1.74•VA Vpp
Input Impedance - 40 - - 40 - k
Common Mode Rejection
(Differential Inputs)
-60- -60- dB
PSRR (Note 14) 1 kHz
60 Hz
-
-
45
20
-
-
-
-
45
20
-
-
dB
dB