±1°C Accurate, 12-Bit Digital

Temperature Sensor

Data Sheet

ADT75

Rev. B

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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

Operation from −55°C to +125°C

Operation from 2.7 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-lead MSOP in Pb-Sn and Pb-free packages

Standard 8-lead SOIC Pb-free package

APPLICATIONS

Isolated sensors

Environmental control systems

Computer thermal monitoring

Thermal protection

Industrial process control

Power-system monitors

Hand-held applications

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 2.7 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.

FUNCTIONAL BLOCK DIAGRAM

CLK AND

TIMING

GENERATION

3

8

1

LPF

Σ-Δ

DIGITAL

COMPARATOR

OS/ALERT

4

GND

SDA

SCL

A2

A1

A0

TEMPERATURE

SENSOR

TEMPERATURE

SENSOR

REGISTER

CONFIGURATION

REGISTER

REGISTER

REGISTER

POINTER

REGISTER

1-BIT

12-BIT

DECIMATOR

1-BIT

DAC

REFERENCE

+

–

2

7

5

6

Figure 1.