Datasheet

ADT7301
Rev. 0 | Page 3 of 16
SPECIFICATIONS
T
A
= T
MIN
to T
MAX
, V
DD
= 2.7 V to 5.25 V, unless otherwise noted. All specifications for –40°C to +150°C, unless otherwise noted.
Table 1. A Grade Specifications
Parameter Min Typ Max Unit Test Conditions/Comments
TEMPERATURE SENSOR AND ADC V
DD
= 3.3 V (±10%) and 5 V (±5%)
Accuracy
1
±0.5 ±1 °C T
A
= 0°C to 70°C
±2 °C T
A
= −20°C to +85°C
±3 °C T
A
= −40°C to +125°C
±4
2
°C T
A
= −40°C to +150°C
Temperature Resolution 0.03125 °C
Auto Conversion Update Rate, t
R
1 sec Temperature measurement every 1 second
Temperature Conversion Time 800 μs
Thermal Time Constant
3
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, T
A
= 0°C to 70°C
0.4 2 μA V
DD
= 5 V, T
A
= 0°C to 70°C
20 μA V
DD
= 2.7 V to 5.25 V, T
A
= –40°C to +150°C
Power Dissipation
Normal Mode (Average) 631 μW V
DD
= 3.3 V, autoconversion update, t
R
1.41 mW V
DD
= 5 V, autoconversion update, t
R
Shutdown Mode (Average)
4
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 INPUT
5
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 V
DD
Input Capacitance, C
IN
10 pF All digital inputs
DIGITAL OUTPUT
5
Output High Voltage, V
OH
V
DD
− 0.3 V I
SOURCE
= I
SINK
= 200 μA
Output Low Voltage, V
OL
0.4 V I
OL
= 200 μA
Output Capacitance, C
OUT
50 pF
1
The accuracy specifications for 0°C to 70°C are specified to 3.5-Σ performance.
2
It is not recommended to operate the device at temperatures above 125°C for greater than a total of 5% (5,000 hours) of the lifetime of the device. Any exposure
beyond this limit affects device reliability.
3
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 ADT7301 experiences a thermal shock
from 0°C to 100°C, it would take typically two seconds for the ADT7301 to reach 63.2°C.
4
The ADT7301 is taken out of shutdown mode and a temperature conversion is immediately performed after this write operation. Once the temperature conversion is
complete, the ADT7301 is put back into shutdown mode.
5
Guaranteed by design and characterization, not production tested.