Datasheet

Data Sheet AD7190
Rev. C | Page 5 of 40
Parameter AD7190B Unit Test Conditions/Comments
1
Normal Mode Rejection
2
Same as for analog inputs
Common-Mode Rejection 95 dB typ
Reference Detect Levels 0.3 V min
0.6 V max
TEMPERATURE SENSOR
Accuracy ±2 °C typ Applies after user calibration at 25°C.
Sensitivity 2815 Codes/°C typ Bipolar mode.
BRIDGE POWER-DOWN SWITCH
R
ON
10 Ω max
Allowable Current
2
30 mA max Continuous current.
BURNOUT CURRENTS
AIN Current 500 nA nom
Analog inputs must be buffered and chop
disabled.
DIGITAL OUTPUTS (P0 to P3)
Output High Voltage, V
OH
2
4 V min AV
DD
= 5V, I
SOURCE
= 200 μA.
Output Low Voltage, V
OL
2
0.4 V max AV
DD
= 5V, I
SINK
= 800 μA.
Floating-State Leakage Current ±100 nA max
Floating-State Output
Capacitance
10 pF typ
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency 4.92 ± 4% MHz min/max
Duty Cycle 50:50 % typ
External Clock/Crystal
2
Frequency 4.9152 MHz nom
2.4576/5.12 MHz min/max
Input Low Voltage, V
INL
0.8 V max DV
DD
= 5 V.
0.4 V max DV
DD
= 3 V.
Input High Voltage, V
INH
2.5 V min DV
DD
= 3 V.
3.5 V min DV
DD
= 5 V.
Input Current ±10 μA max
LOGIC INPUTS
Input High Voltage, V
INH
2
2 V min
Input Low Voltage, V
INL
2
0.8 V max
Hysteresis
2
0.1/0.25 V min/V max
Input Currents ±10 μA max
LOGIC OUTPUT (DOUT/RDY)
Output High Voltage, V
OH
2
DV
DD
− 0.6 V min DV
DD
= 3 V, I
SOURCE
= 100 μA.
Output Low Voltage, V
OL
2
0.4 V max DV
DD
= 3 V, I
SINK
= 100 μA.
Output High Voltage, V
OH
2
4 V min DV
DD
= 5 V, I
SOURCE
= 200 μA.
Output Low Voltage, V
OL
2
0.4 V max DV
DD
= 5 V, I
SINK
= 1.6 mA.
Floating-State Leakage Current ±10 μA max
Floating-State Output
Capacitance
10 pF typ
Data Output Coding Offset binary
SYSTEM CALIBRATION
2
Full-Scale Calibration Limit 1.05 × FS V max
Zero-Scale Calibration Limit −1.05 × FS V min
Input Span 0.8 × FS V min
2.1 × FS V max