CS5521/22/23/24/28
ANALOG CHARACTERISTICS (Continued)
Parameter
Min
Typ
Max
Unit
Analog Input
Common Mode + Signal on AIN+ or AIN-
Bipolar/Unipolar Mode
NBV = -1.8 to -2.5 V
Range = 25 mV, 55 mV, or 100 mV
Range = 1 V, 2.5 V, or 5 V
Range = 25 mV, 55 mV, or 100 mV (Note 7)
Range = 1 V, 2.5 V, or 5 V
-0.150
NBV
1.85
0.0
-
-
-
-
0.950
VA+
2.65
VA+
V
V
V
V
NBV = AGND
CVF Current on AIN+ or AIN-
(Note 8)
Range = 25 mV, 55 mV, or 100 mV
Range = 1 V, 2.5 V, or 5 V
-
-
100
10
300
-
pA
nA
Input Current Drift
(Note 8)
Range = 25 mV, 55 mV, or 100 mV
-
1
-
pA/°C
pA
Input Leakage for Multiplexer when Off
-
10
-
Common Mode Rejection dc
50, 60 Hz
-
-
120
120
-
-
dB
dB
Input Capacitance
-
10
-
pF
Voltage Reference Input
Range
(VREF+) - (VREF-)
1
2.5
-
VA+
V
V
(VREF-)+1
VREF+
VA+
(VREF+)-1
VREF-
NBV
-
-
V
CVF Current
(Note 8)
5.0
-
nA
Common Mode Rejection dc
50, 60 Hz
-
-
110
130
-
-
dB
dB
Input Capacitance
-
16
-
pF
System Calibration Specifications
Full Scale Calibration Range (VREF = 2.5V)
Bipolar/Unipolar Mode
25 mV
55 mV
100 mV
1 V
2.5 V
5 V
10
25
40
0.40
1.0
2.0
-
-
-
-
-
-
32.5
71.5
105
1.30
3.25
VA+
mV
mV
mV
V
V
V
Offset Calibration Range
Bipolar/Unipolar Mode
(Note 9)
25 mV
55 mV
100 mV
1 V
-
-
-
-
-
-
-
-
-
-
-
-
±12.5
±27.5
±50
±0.5
±1.25
±2.50
mV
mV
mV
V
V
V
2.5 V
5 V
Notes: 7. For the CS5528, the 25 mV, 55 mV and 100 mV ranges cannot be used unless NBV is powered at -1.8
to -2.5 V
8. See the section of the data sheet which discusses input models. Chop clock is 256 Hz (XIN/128) for
PGIA (programmable gain instrumentation amplifier). XIN = 32.768 kHz.
9. The maximum full scale signal can be limited by saturation of circuitry within the internal signal path.
6
DS317F2
CIRRUS [ CIRRUS LOGIC ]
