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AD7417ACHIPS Datasheet(PDF) 3 Page - Analog Devices

Part # AD7417ACHIPS
Description  10-Bit Digital Temperature Sensor (AD7416) and Single/Four-Channel ADC (AD7417/AD7418)
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7417ACHIPS Datasheet(HTML) 3 Page - Analog Devices

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REV. G
AD7416/AD7417/AD7418
–3–
NOTES
1B Version applies to AD7417 only with temperature range of –40
°C to +85°C. A Version temperature range is –40°C to +125°C. For V
DD = 2.7 V, TA = 85
°C max
and temperature sensor measurement error =
±3°C.
2See Terminology.
3Refers to the input current when the part is not converting. Primarily due to reverse leakage current in the ESD protection diodes.
4Sample tested during initial release and after any redesign or process change that may affect this parameter.
5On-chip reference shuts down when external reference is applied.
6The accuracy of the temperature sensor is affected by reference tolerance. The relationship between the two is explained in the Temperature Sensor section.
Specifications subject to change without notice.
AD7416–SPECIFICATIONS (V
DD = 2.7 V to 5.5 V, GND = 0 V, REFIN = 2.5 V, unless otherwise noted.)
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
TEMPERATURE SENSOR AND ADC
Accuracy
±2.0
°CT
A = –25
°C to +100°C
(VDD = 3 V min)
1
±3.0
°CTA = –40°C to +125°C
(VDD = 3 V min)
1
Resolution
10
Bits
Temperature Conversion Time
40
µs
Update Rate, tR
400
µs
OTI Delay
1
× tR
6
× tR
ms
Depends on Fault Queue Setting
Supply Current
1.0
mA
I
2C Active
350
600
µAI2C Inactive
0.2
1.5
µA
Shutdown Mode
TOTI Default Temperature
80
°C
THYST Default Temperature
75
°C
DIGITAL INPUTS
Input High Voltage, VIH
VDD
× 0.7
VDD + 0.5
V
Input Low Voltage, VIL
–0.3
VDD
× 0.3
V
Input High Current, IIH
+0.005
+1.0
µAV
IN = 5 V
Input Low Current, IIL
–0.005
–1.0
µAVIN = 0 V
Input Capacitance, CIN
20
pF
All Digital Inputs
DIGITAL OUTPUTS
Output Low Voltage, VOL
0.4
V
IOL = 3 mA
Output High Current
1
µAV
OH = 5 V
Output Fall Time, tf
250
ns
CL = 400 pF, IO = 3 mA
OS Output Low Voltage, VOL
0.8
V
IOUT = 4 mA
AC ELECTRICAL CHARACTERISTICS
2
AD7416/AD7417/AD7418
Serial Clock Period, t1
2.5
µs
See Figure 1
Data In Setup Time to SCL High, t2
50
ns
See Figure 1
Data Out Stable after SCL Low, t3
0ns
See Figure 1
SDA Low Setup Time to SCL Low
(Start Condition), t4
50
ns
See Figure 1
SDA High Hold Time after SCL High
(Stop Condition), t5
50
ns
See Figure 1
SDA and SCL Fall Time, t6
300
ns
See Figure 1
NOTES
1For V
DD = 2.7 V to 3 V, TA max = 85
°C and accuracy = ±3°C.
2Sample tested during initial release and after any redesign or process change that may affect this parameter.
Specifications subject to change without notice.
t4
t2
t3
t5
SCL
SDA
DATA IN
SDA
DATA OUT
t6
t1
Figure 1. Diagram for Serial Bus Timing


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