Cirrus Logic CS4234 - Manual (Page 12)

DS899F1 12
CS4234
ANALOG INPUT CHARACTERISTICS
Test Conditions (unless otherwise specified): Device configured as shown in Figure 2 on page 8 . Input sine wave:
1 kHz; VA_SEL = 0 for VA = 3.3 VDC, 1 for VA = 5.0 VDC.; T
A
= -40 to +105 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