Datasheet

AD7193 Data Sheet
Rev. D | Page 6 of 56
Parameter Min Typ Max Unit Test Conditions/Comments
1
REFERENCE INPUT
REFIN Voltage 1 AV
DD
V
REFIN = REFINx(+) − REFINx(−), the
differential input must be limited to
±(AV
DD
− 1.25 V)/gain when gain > 1
Absolute REFIN Voltage
Limits
2
AGND − 0.05 AV
DD
+ 0.05 V
Average Reference Input
Current
4.5 µA/V
Average Reference Input
Current Drift
±0.03 nA/V/°C External clock
±1.3 nA/V/°C Internal clock
Normal Mode Rejection
2
Same as for
analog inputs
Common-Mode
Rejection
100 dB
Reference Detect Levels
0.3
0.6
V
TEMPERATURE SENSOR
Accuracy ±2 °C Applies after user calibration at 25°C
Sensitivity 2815 Codes/°C Bipolar mode
BRIDGE POWER-DOWN
SWITCH
R
ON
10 Ω
Allowable Current
2
30 mA Continuous current
BURNOUT CURRENTS
AIN Current
500
nA
Analog inputs must be buffered and chop
disabled
DIGITAL OUTPUTS (P0 to P3)
Output High Voltage, V
OH
AV
DD
− 0.6 V AV
DD
= 3 V, I
SOURCE
= 100 μA
4 V AV
DD
= 5 V, I
SOURCE
= 200 μA
Output Low Voltage, V
OL
0.4 V AV
DD
= 3 V, I
SINK
= 100 μA
0.4 V AV
DD
= 5 V, I
SINK
= 800 μA
Floating-State Leakage
Current
2
−100 +100 nA
Floating-State Output
Capacitance
10 pF
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency 4.72 4.92 5.12 MHz
Duty Cycle 50:50 %
External Clock/Crystal
Frequency 2.4576 4.9152 5.12 MHz
Input Low Voltage, V
INL
0.8
V
DV
DD
= 5 V
0.4
V
DV
DD
= 3 V
Input High Voltage, V
INH
2.5 V DV
DD
= 3 V
3.5 V DV
DD
= 5 V
Input Current −10 +10 µA
LOGIC INPUTS
Input High Voltage, V
INH
2
2 V
Input Low Voltage, V
INL
2
0.8 V
Hysteresis
2
0.1 0.25 V
Input Currents −10 +10 µA
LOGIC OUTPUT (DOUT/
RDY
)
Output High Voltage, V
OH
2
DV
DD
− 0.6 V DV
DD
= 3 V, I
SOURCE
= 100 µA
4 V DV
DD
= 5 V, I
SOURCE
= 200 µA
Output Low Voltage, V
OL
2
0.4 V DV
DD
= 3 V, I
SINK
= 100 µA
0.4 V DV
DD
= 5 V, I
SINK
= 1.6 mA
Floating-State Leakage
Current
−10 +10 µA
Floating-State Output
Capacitance
10 pF