± ±1°C AAcurateC±ꢀ2-BaCꢁBiBarꢂ
TtmpturacutCStnsou
ꢁT75
CC
FEATURES
PRODUCT HIGHLIGHTS
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
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 maꢀimum.
5. Temperature resolution is 0.0625°C.
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
6. Shutdown mode reduces the current consumption to
3 μA typical.
7. Connect up to eight ADT75s to a single SMBus/I2C bus.
APPLICATIONS
Isolated sensors
Environmental control systems
Computer thermal monitoring
Thermal protection
Industrial process control
Power-system monitors
Hand-held applications
FUNCTIONAL BLOCK DIAGRAM
V
DD
8
DIGITAL
COMPARATOR
12-BIT
3
OS/ALERT
DECIMATOR
LPF
TEMPERATURE
SENSOR
1-BIT
TEMPERATURE
SENSOR
REGISTER
+
–
CONFIGURATION
REGISTER
REFERENCE
Σ-Δ
1-BIT
DAC
T
SETPOINT
HYST
REGISTER
CLK AND
TIMING
GENERATION
T
SETPOINT
REGISTER
OS
POINTER
REGISTER
7
6
5
A0
A1
A2
1
2
SDA
SCL
2
SMBus/I C INTERFACE
8
GND
Figure 1.
Rev. 0
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