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AD7194BCPZ-REEL7 Arkusz danych(PDF) 5 Page - Analog Devices

Numer części AD7194BCPZ-REEL7
Szczegółowy opis  8-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

AD7194BCPZ-REEL7 Arkusz danych(HTML) 5 Page - Analog Devices

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AD7194
Rev. 0 | Page 5 of 56
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments1
REFERENCE INPUT
REFIN Voltage
1
AVDD
V
REFIN = REFINx(+) − REFINx(−), the
differential input must be limited to
±(AVDD − 1.25 V)/gain when gain > 1
Absolute REFIN Voltage
Limits2
AGND − 0.05
AVDD + 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 Rejection2
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
BURNOUT CURRENTS
AIN Current
500
nA
Analog inputs must be buffered and chop
disabled
DIGITAL OUTPUTS (P0 to P3)
Output High Voltage, VOH
AVDD − 0.6
V
AVDD = 3 V, ISOURCE = 100 μA
4
V
AVDD = 5 V, ISOURCE = 200 μA
Output Low Voltage, VOL
0.4
V
AVDD = 3 V, ISINK = 100 μA
0.4
V
AVDD = 5 V, ISINK = 800 μA
Floating-State Leakage
Current2
−100
+100
nA
Floating-State Output
Capacitance
10
pF
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency
4.72
5.12
MHz
Duty Cycle
50:50
%
External Clock/Crystal
Frequency
2.4576
4.9152
5.12
MHz
Input Low Voltage, VINL
0.8
V
DVDD = 5 V
0.4
V
DVDD = 3 V
Input High Voltage, VINH
2.5
V
DVDD = 3 V
3.5
V
DVDD = 5 V
Input Current
−10
+10
μA
LOGIC INPUTS
Input High Voltage, VINH2
2
V
Input Low Voltage, VINL2
0.8
V
Hysteresis2
0.1
0.25
V
Input Currents
−10
+10
μA
LOGIC OUTPUT (DOUT/RDY)
Output High Voltage, VOH2
DVDD − 0.6
V
DVDD = 3 V, ISOURCE = 100 μA
4
V
DVDD = 5 V, ISOURCE = 200 μA
Output Low Voltage, VOL2
0.4
V
DVDD = 3 V, ISINK = 100 μA
0.4
V
DVDD = 5 V, ISINK = 1.6 mA
Floating-State Leakage
Current
−10
+10
μA
Floating-State Output
Capacitance
10
pF
Data Output Coding
Offset binary


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