AD7194 查看數據表（PDF） - Analog Devices
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AD7194 Datasheet PDF : 56 Pages
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Parameter
Min
REFERENCE INPUT
REFIN Voltage
1
Absolute REFIN Voltage
Limits2
Average Reference Input
Current
Average Reference Input
Current Drift
AGND − 0.05
Normal Mode Rejection2
Common-Mode
Rejection
Reference Detect Levels 0.3
TEMPERATURE SENSOR
Accuracy
Sensitivity
BURNOUT CURRENTS
AIN Current
DIGITAL OUTPUTS (P0 to P3)
Output High Voltage, VOH
Output Low Voltage, VOL
AVDD − 0.6
4
Floating-State Leakage
Current2
Floating-State Output
Capacitance
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency
Duty Cycle
External Clock/Crystal
Frequency
Input Low Voltage, VINL
−100
4.72
2.4576
Input High Voltage, VINH
Input Current
LOGIC INPUTS
Input High Voltage, VINH2
Input Low Voltage, VINL2
Hysteresis2
Input Currents
LOGIC OUTPUT (DOUT/RDY)
Output High Voltage, VOH2
Output Low Voltage, VOL2
2.5
3.5
−10
2
0.1
−10
DVDD − 0.6
4
Floating-State Leakage −10
Current
Floating-State Output
Capacitance
Data Output Coding
Typ
Max
AVDD
4.5
±0.03
±1.3
Same as for
analog inputs
100
±2
2815
500
AVDD + 0.05
0.6
10
50:50
4.9152
0.4
0.4
+100
5.12
5.12
0.8
0.4
+10
0.8
0.25
+10
0.4
0.4
+10
10
Offset binary
Unit
V
V
μA/V
nA/V/°C
nA/V/°C
AD7194
Test Conditions/Comments1
REFIN = REFINx(+) − REFINx(−), the
differential input must be limited to
±(AVDD − 1.25 V)/gain when gain > 1
External clock
Internal clock
dB
V
°C
Codes/°C
nA
V
V
V
V
nA
pF
Applies after user calibration at 25°C
Bipolar mode
Analog inputs must be buffered and chop
disabled
AVDD = 3 V, ISOURCE = 100 μA
AVDD = 5 V, ISOURCE = 200 μA
AVDD = 3 V, ISINK = 100 μA
AVDD = 5 V, ISINK = 800 μA
MHz
%
MHz
V
V
V
V
μA
V
V
V
μA
V
V
V
V
μA
pF
DVDD = 5 V
DVDD = 3 V
DVDD = 3 V
DVDD = 5 V
DVDD = 3 V, ISOURCE = 100 μA
DVDD = 5 V, ISOURCE = 200 μA
DVDD = 3 V, ISINK = 100 μA
DVDD = 5 V, ISINK = 1.6 mA
Rev. 0 | Page 5 of 56
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