TMP121AIDBVTG4 Datasheet, PDF (1/18 Pages) Texas Instruments – 1.5 C Accurate Digital Temperature Sensor with SPI Interface

TMP121
TMP123
SBOS273C − JUNE 2003 − REVISED FEBRUARY 2005
1.5°C Accurate Digital Temperature Sensor
with SPI Interface
FEATURES
D DIGITAL OUTPUT: SPI-Compatible Interface
D RESOLUTION: 12-Bit + Sign, 0.0625°C
D ACCURACY:
±1.5°C from −25°C to +85°C (max)
D LOW QUIESCENT CURRENT: 50µA (max)
D WIDE SUPPLY RANGE: 2.7V to 5.5V
D TINY SOT23-6 PACKAGE
D OPERATION TO 150°C
APPLICATIONS
D POWER-SUPPLY TEMPERATURE
MONITORING
D COMPUTER PERIPHERAL THERMAL
PROTECTION
D NOTEBOOK COMPUTERS
D CELL PHONES
D BATTERY MANAGEMENT
D OFFICE MACHINES
DESCRIPTION
The TMP121 and TMP123 are SPI-compatible tempera-
ture sensors available in the tiny SOT23-6 package.
Requiring no external components, the TMP121 and
TMP123 are capable of measuring temperatures within
2°C of accuracy over a temperature range of −40°C to
+125°C. Low supply current, and a supply range from 2.7V
to 5.5V, make the TMP121 and TMP123 excellent
candidates for low-power applications.
The TMP121 and TMP123 are ideal for extended thermal
measurement in a variety of communication, computer,
consumer, environmental, industrial, and instrumentation
applications.
Temperature
NC 1
Diode
Temp.
Sensor
Control
Logic
6 SO
Temperature
GND 1
Diode
Temp.
Sensor
Control
Logic
6 SO
GND 2
∆Σ
A/D
Converter
Serial
Interface
5 CS
NC 2
∆Σ
A/D
Converter
Serial
Interface
5 CS
V+ 3
OSC
Config.
and Temp.
Register
4 SCK
V+ 3
OSC
Config.
and Temp.
Register
4 SCK
TMP121
TMP123
NC = No Connection⁽¹⁾
NC = No Connection⁽¹⁾
(1) _{Pins labeled NC should be left floating or connected to GND.}
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PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
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