ADT75 Datasheet, PDF (4/24 Pages) Analog Devices – +-1°C Accurate, 12-Bit Digital Temperature Sensor

ADT75
SPECIFICATIONS
A GRADE
TA = TMIN to TMAX, VDD = 3.0 V to 5.5 V. All specifications for −55°C to +125°C, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit Test Conditions/Comments
TEMPERATURE SENSOR AND ADC
Accuracy at VDD = 3.0 V to 5.5 V
±2
°C
TA = −25°C to +100°C
±3
°C
TA = −55°C to +100°C
Accuracy at VDD = 3.0 V to 3.6 V
±3
°C
TA = +100°C to +125°C
Accuracy at VDD = 4.5 V to 5.5 V
±2
°C
TA = +100°C to +125°C
ADC Resolution
12
Bits
Temperature Resolution
0.0625
°C
Temperature Conversion Time
60
ms
Update Rate
100
ms
Conversion started every 100 ms
Long Term Drift
0.08
°C
Drift over 10 years, if part is operated at 55°C
Temperature Hysteresis
+0.03
°C
Temperature cycle = 25°C to 125°C to 25°C
OS/ALERT OUTPUT (OPEN DRAIN)
Output Low Voltage, VOL
0.4
V
IOL = 3 mA
Pin Capacitance
10
pF
High Output Leakage Current, IOH
0.1
5
μA
OS/ALERT pin pulled up to 5.5 V
RON Resistance (Low Output)
15
Ω
Supply and temperature dependent
DIGITAL INPUTS
Input Current
±1
μA
VIN = 0 V to VDD
Input Low Voltage, VIL
0.3 × VDD V
Input High Voltage, VIH
0.7 × VDD
V
SCL, SDA Glitch Rejection
50
ns
Input filtering suppresses noise spikes of less
than 50 ns
Pin Capacitance
3
10
pF
DIGITAL OUTPUT (OPEN DRAIN)
Output High Current, IOH
1
mA
VOH = 5 V
Output Low Voltage, VOL
0.4
V
IOL = 3 mA
Output High Voltage, VOH
0.7 × VDD
V
Output Capacitance, COUT
3
10
pF
POWER REQUIREMENTS
Supply Voltage
3
5.5
V
Supply Current at 3.3 V
350
500
μA
Peak current while converting and I²C interface
inactive
Supply Current at 5.0 V
380
525
μA
Peak current while converting and I²C interface
inactive
Average Current at 3.3 V
200
μA
Part converting and I²C interface inactive
Average Current at 5.0 V
225
μA
Part converting and I²C interface inactive
Shutdown Mode at 3.3 V
3
8
μA
Supply current in shutdown mode
Shutdown Mode at 5.0 V
5.5
12
μA
Supply current in shutdown mode
Average Power Dissipation
798.6
μW
VDD = 3.3 V, normal mode at 25°C
1 SPS
78.6
μW
Average power dissipated for VDD = 3.3 V, shutdown
mode at 25°C
140
μW
Average power dissipated for VDD = 5.0 V, shutdown
mode at 25°C
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