Datasheet

Data Sheet ADT7410
Rev. A | Page 3 of 24
SPECIFICATIONS
T
A
= −55°C to +150°C, V
DD
= 2.7 V to 5.5 V, unless otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
TEMPERATURE SENSOR AND ADC
Accuracy
1
−0.05 ±0.4
2
°C T
A
= −40°C to +105°C, V
DD
= 3.0 V
±0.44 °C T
A
= −40°C to +105°C, V
DD
= 2.7 V to 3.3 V
±0.5 °C T
A
= −55°C to +125°C, V
DD
= 3.0 V
±0.5 °C T
A
= −40°C to +105°C, V
DD
= 2.7 V to 3.6 V
±0.7 °C T
A
= −55°C to +150°C, V
DD
= 2.7 V to 3.6 V
±0.8
°C
T
A
= −40°C to +105°C, V
DD
= 4.5 V to 5.5 V
±1.0 °C T
A
= −55°C to +150°C, V
DD
= 2.7 V to 5.5 V
ADC Resolution 13 Bits Twos complement temperature value of the sign bit
plus 12 ADC bits (power-up default resolution)
16 Bits Twos complement temperature value of the sign bit
plus 15 ADC bits (Bit 7 = 1 in the configuration register)
Temperature Resolution
13-Bit 0.0625 °C 13-bit resolution (sign + 12-bit)
16-Bit 0.0078 °C 16-bit resolution (sign + 15-bit)
Temperature Conversion Time 240 ms Continuous conversion and one-shot conversion modes
Fast Temperature Conversion Time 6 ms First conversion on power-up only
1 SPS Conversion Time
ms
Conversion time for 1 SPS mode
Temperature Hysteresis ±0.002 °C Temperature cycle = 25°C to 125°C and back to 25°C
Repeatability
3
±0.015 °C T
A
= 25°C
DC PSRR 0.1 °C/V T
A
= 25°C
DIGITAL OUTPUTS (OPEN DRAIN)
High Output Leakage Current, I
OH
0.1 5 µA CT and INT pins pulled up to 5.5 V
Output High Current
1
mA
V
OH
= 5.5 V
Output Low Voltage, V
OL
0.4 V I
OL
= 2 mA @ 5.5 V, I
OL
= 1 mA @ 3.3 V
Output High Voltage, V
OH
0.7 × V
DD
V
Output Capacitance, C
OUT
3 pF
DIGITAL INPUTS
Input Current ±1 µA V
IN
= 0 V to V
DD
Input Low Voltage, V
IL
0.4 V
Input High Voltage, V
IH
0.7 × V
DD
V
SCL, SDA Glitch Rejection 50 ns Input filtering suppresses noise spikes of less than 50 ns
Pin Capacitance 5 10 pF
POWER REQUIREMENTS
Supply Voltage
2.7
5.5
V
Supply Current
At 3.3 V 210 250 µA Peak current while converting, I
2
C interface inactive
At 5.5 V 250 300 µA Peak current while converting, I
2
C interface inactive
1 SPS Current
At 3.3 V 46 µA V
DD
= 3.3 V, 1 SPS mode, T
A
= 25°C
At 5.5 V 65 µA V
DD
= 5.5 V, 1 SPS mode, T
A
= 25°C
Shutdown Current
At 3.3 V 2.0 15 µA Supply current in shutdown mode
At 5.5 V 5.2 25 µA Supply current in shutdown mode
Power Dissipation Normal Mode 700 µW V
DD
= 3.3 V, normal mode at 25°C
Power Dissipation 1 SPS 150 µW Power dissipated for V
DD
= 3.3 V, T
A
= 25°C
1
Accuracy includes lifetime drift.
2
The equivalent 3 σ limits are ±0.33°C. This 3 σ specification is provided to enable comparison with other vendors who use these limits.
3
Based on a floating average of 10 readings.