Datasheet

Data Sheet ADT7320
Rev. 0 | Page 3 of 24
SPECIFICATIONS
T
A
= −40°C to +125°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
0.0017 ±0.20
2
°C T
A
= −10°C to +85°C, V
DD
= 3.0 V
±0.25 °C T
A
= −20°C to +105°C, V
DD
= 2.7 V to 3.3 V
±0.31 °C T
A
= −40°C to +105°C, V
DD
= 3.0 V
±0.35 °C T
A
= −40°C to +105°C, V
DD
= 2.7 V to 3.3 V
±0.50 °C T
A
= −40°C to +125°C, V
DD
= 2.7 V to 3.3 V
±0.50
3
°C T
A
= −10°C to +105°C, V
DD
= 4.5 V to 5.5 V
±0.66 °C T
A
= −40°C to +125°C, V
DD
= 4.5 V to 5.5 V
−0.85 °C T
A
= +150°C, V
DD
= 4.5 V to 5.5 V
−1.0 °C T
A
= +150°C, V
DD
= 2.7 V to 3.3 V
ADC Resolution 13 Bits Twos complement temperature value of sign bit plus
12 ADC bits (power-up default resolution)
16 Bits Twos complement temperature value of 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 bits)
16-Bit 0.0078 °C 16-bit resolution (sign + 15 bits)
Temperature Conversion Time 240 ms Continuous conversion and one-shot conversion mode
Fast Temperature Conversion Time 6 ms First conversion on power-up only
1 SPS Conversion Time 60 ms Conversion time for 1 SPS mode
Temperature Hysteresis
4
±0.002 °C Temperature cycle = 25°C to 125°C and back to 25°C
Repeatability
5
±0.015 °C T
A
= 25°C
Drift
6
0.0073 °C 500 hour stress test at 150°C with V
DD
= 5.0 V
DC PSRR 0.1 °C/V T
A
= 25°C
DIGITAL OUTPUTS (CT, INT ), OPEN DRAIN
High Output Leakage Current, I
OH
0.1 5 µA CT and INT pins pulled up to 5.5 V
Output Low Voltage, V
OL
0.4 V I
OL
= 3 mA at 5.5 V, I
OL
= 1 mA at 3.3 V
Output High Voltage, V
OH
0.7 × V
DD
V
Output Capacitance, C
OUT
2 pF
DIGITAL INPUTS (DIN, SCLK,
CS
)
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
Pin Capacitance 5 10 pF
DIGITAL OUTPUT (DOUT)
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
POWER REQUIREMENTS
Supply Voltage 2.7 5.5 V
Supply Current Peak current while converting, SPI interface inactive
At 3.3 V 210 265 µA
At 5.5 V 250 300 µA
1 SPS Current 1 SPS mode, T
A
= 25°C
At 3.3 V 46 µA V
DD
= 3.3 V
At 5.5 V 65 µA V
DD
= 5.5 V