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

FEATURES
12-bit temperature-to-digital converter
B grade accuracy ±1.0°C from 0°C to 70°C
A grade accuracy ±2.0°C from –25°C to +100°C
SMBus/I²C-compatible interface
Operation from −55°C to +125°C
Operation from 3 V to 5.5 V
Overtemperature indicator
Shutdown mode for low power consumption
Power consumption 79 μW typically at 3.3 V
Small, low cost 8-pin MSOP in Pb-Sn and Pb-free packages
Standard 8-pin SOIC Pb-free package
APPLICATIONS
Isolated sensors
Environmental control systems
Computer thermal monitoring
Thermal protection
Industrial process control
Power-system monitors
Hand-held applications
±1°C Accurate, 12-Bit Digital
Temperature Sensor
ADT75
PRODUCT HIGHLIGHTS
1. On-chip temperature sensor allows an accurate
measurement of the ambient temperature. The measurable
temperature range is −55°C to +125°C.
2. Supply voltage is 3.0 V to 5.5 V.
3. Space-saving, 8-lead MSOP and 8-lead SOIC.
4. Temperature accuracy is ±1°C maximum.
5. Temperature resolution is 0.0625°C.
6. Shutdown mode reduces the current consumption to
3 μA typical.
7. Connect up to eight ADT75s to a single SMBus/I²C bus.
TEMPERATURE
SENSOR
REFERENCE
CLK AND
TIMING
GENERATION
A0 7
A1 6
A2 5
FUNCTIONAL BLOCK DIAGRAM
DECIMATOR
V_DD
8
12-BIT
LPF
1-BIT
+
DIGITAL
COMPARATOR
3 OS/ALERT
TEMPERATURE
SENSOR
REGISTER
–
Σ-Δ
1-BIT
DAC
CONFIGURATION
REGISTER
T_HYST SETPOINT
REGISTER
POINTER
REGISTER
SMBus/I²C INTERFACE
8
GND
Figure 1.
T_OS SETPOINT
REGISTER
1 SDA
2 SCL
Rev. 0
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