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ADT7302 Datasheet(PDF) 4 Page - Analog Devices

Part No. ADT7302
Description  Accurate, Micropower Digital Accurate, Micropower Digital
Download  17 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADT7302 Datasheet(HTML) 4 Page - Analog Devices

 
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ADT7302
Rev. B | Page 3 of 16
SPECIFICATIONS
TA = TMIN to TMAX, VDD = 2.7 V to 5.25 V, unless otherwise noted. All specifications are for −40°C to +125°C, unless otherwise stated.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
TEMPERATURE SENSOR AND ADC
V
DD = 3.3 V (±10%) and 5 V (±5%)
Accuracy
±1
±2
°C
T
A = 0°C to 70°C
±2.5
°C
T
A = −20°C to +85°C
±3
°C
T
A = −40°C to +125°C
Temperature Resolution
0.03125
°C
Autoconversion Update Rate, t
R
1.5
sec
Temperature measurement every 1.5 second
Temperature Conversion Time
1.2
ms
Thermal Time Constant1
2
sec
SUPPLIES
Supply Voltage
2.7
5.25
V
For specified performance
Supply Current
Normal Mode
1.6
2.2
mA
V
DD = 3.3 V, powered up and converting
190
300
µA
V
DD = 3.3 V, powered up and not converting
1.6
2.2
mA
V
DD = 5 V, powered up and converting
280
400
µA
V
DD = 5 V, powered up and not converting
Shutdown Mode
0.2
1
µA
V
DD = 3.3 V, TA = 0°C to 70°C
0.4
2
µA
V
DD = 5 V, TA = 0°C to 70°C
20
µA
V
DD = 2.7 V to 5.25 V, TA = −40°C to +125°C
Power Dissipation
Normal Mode (Average)
631
µW
V
DD = 3.3 V, autoconversion update, tR
1.41
mW
V
DD = 5 V, autoconversion update, tR
Shutdown Mode (Average)2
1 SPS
4.88
µW
V
DD = 3.3 V
7.4
µW
V
DD = 5 V
10 SPS
42.9
µW
V
DD = 3.3 V
65
µW
V
DD = 5 V
100 SPS
423
µW
V
DD = 3.3 V
641
µW
V
DD = 5 V
DIGITAL INPUT3
Input High Voltage, V
IH
2.5
V
Input Low Voltage, V
IL
0.8
V
Input Current, I
IN
±1
µA
V
IN = 0 V to VDD
Input Capacitance, C
IN
10
pF
All digital inputs
DIGITAL OUTPUT3
Output High Voltage, V
OH
V
DD − 0.3 V
I
SOURCE = ISINK = 200 µA
Output Low Voltage, V
OL
0.4
V
I
OL = 200 µA
Output Capacitance, C
OUT
50
pF
1 The thermal time constant is the time it takes for a temperature delta to change to 63.2% of its final value. For example, if the ADT7302 experiences a thermal shock
from 0°C to 100°C, it typically takes 2 seconds for the ADT7302 to reach 63.2°C.
2 The ADT7302 is taken out of shutdown mode and a temperature conversion is immediately performed after this write operation. When the temperature conversion is
complete, the ADT7302 is put back into shutdown mode.
3 Guaranteed by design and characterization, not production tested.


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