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AD7190 Arkusz danych(PDF) 3 Page - Analog Devices

Numer części AD7190
Szczegółowy opis  4.8 kHz Ultra-Low 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

AD7190 Arkusz danych(HTML) 3 Page - Analog Devices

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Preliminary Technical Data
AD7190
Rev.PrD 7/08 | Page 3
Parameter1
AD7190B
Unit
Test Conditions/Comments
Reference Voltage Range2
1
V min
AVDD
V max
The differential input must be limited to ± (AVDD
1V)/gain when gain > 1
Absolute REFIN Voltage Limits2
GND – 50 mV
V min
AVDD + 50 mV
V max
Average Reference Input Current
6
µA/V typ
Average Reference Input Current
Drift
±0.03
nA/V/°C typ
Normal Mode Rejection2
Same as for analog
inputs
Common-Mode Rejection
100
dB typ
Reference Detect Levels
0.3
V min
0.5
V max
TEMPERATURE SENSOR
Accuracy
+2
°C typ
Applies after user-calibration at one temperature
Sensitivity
2800
codes/°C typ
LOW SIDE POWER SWITCH
RON
7
Ω max
AVDD = 5 V
9
Ω max
AVDD = 3 V
Allowable Current2
30
mA max
Continuous Current
BURNOUT CURRENTS
AIN Current
500
nA nom
DIGITAL OUTPUTS (P0 – P3)
VOH, Output High Voltage2
AVDD
− 0.6
V min
AVDD = 3V, ISOURCE = 100
µA
VOL, Output Low Voltage2
0.4
V max
AVDD = 3V, ISINK = 100
µA
VOH, Output High Voltage2
4
V min
AVDD = 5V, ISOURCE = 200
µA
VOL, Output Low Voltage2
0.4
V max
AVDD = 5V, ISINK = 800
µA
Floating-State Leakage Current
±10
µA 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
Frequency
4.9152
MHz nom
2.4576/5.12
MHz min/max
VINL, Input Low Voltage
0.8
V max
DVDD = 5 V
0.4
V max
DVDD = 3 V
VINH, Input High Voltage
2.5
V min
DVDD = 3 V
3.5
V min
DVDD = 5 V
Input Current
±10
µA max
MCLKIN = DVDD or GND
LOGIC INPUTS
VT(+)
1.4/2
V min/V max
DVDD = 5 V
VT(
−)
0.8/1.7
V min/V max
DVDD = 5 V
VT(+)
− VT(−)
0.1/0.17
V min/V max
DVDD = 5 V
VT(+)
0.9/2
V min/V max
DVDD = 3 V
VT(
−)
0.4/1.35
V min/V max
DVDD = 3 V
VT(+)
− VT(−)
0.06/0.13
V min/V max
DVDD = 3 V
Input Currents
±10
µA max
VIN = DVDD or GND
LOGIC OUTPUT (DOUT/RDY)
VOH, Output High Voltage2
DVDD
− 0.6
V min
DVDD = 3 V, ISOURCE = 100 µA
VOL, Output Low Voltage2
0.4
V max
DVDD = 3 V, ISINK = 100 µA
VOH, Output High Voltage2
4
V min
DVDD = 5 V, ISOURCE = 200 µA


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