Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsTMP121AIDBVR

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.

Diode

Te mp .

Sensor

∆Σ

A/D

Converter

OSC

Control

Logic

Serial

Interface

Config.

and Temp.

TMP121

Te m p e r a t u r e

GND

NC = No Connection

(1)

V+

SCK

Diode

Te m p .

Sensor

∆Σ

A/D

Converter

OSC

Control

Logic

Serial

Interface

Config.

and Temp.

TMP123

GND

NC = No Connection

(1)

V+

SCK

Temperature

(1)

Pins labeled NC should be left floating or connected to GND.

TMP121

TMP123

SBOS273C − JUNE 2003 − REVISED FEBRUARY 2005

1.5°C Accurate Digital Temperature Sensor

with SPI Interface

         

          

 !     !   

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Summary of content (18 pages)

PAGE 1
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) LOW QUIESCENT CURRENT: 50µA (max) WIDE SUPPLY RANGE: 2.7V to 5.
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" #$# " #$% www.ti.com SBOS273C − JUNE 2003 − REVISED FEBRUARY 2005 ABSOLUTE MAXIMUM RATINGS(1) Power Supply, V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V Input Voltage(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3V to +7V Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA Operating Temperature Range . . . . . . . . . . . . . . . −55°C to +150°C Storage Temperature Range . . . . . . . . . . . . . .
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" #$# " #$% www.ti.com SBOS273C − JUNE 2003 − REVISED FEBRUARY 2005 ELECTRICAL CHARACTERISTICS At TA = −40°C to +125°C and V+ = 2.7V to 5.5V, unless otherwise noted. TMP121, TMP123 PARAMETER CONDITIONS MIN TYP MAX UNIT TEMPERATURE INPUT +125 °C −25°C to +85°C ±0.5 ±1.5 °C −40°C to +125°C ±1.0 ±2.0 °C −40°C to +150°C ±1.5 +0.3 °C/V Range −40 Accuracy (temperature error) vs Supply −0.3 0.1 °C ±0.
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" #$# " #$% www.ti.com SBOS273C − JUNE 2003 − REVISED FEBRUARY 2005 TYPICAL CHARACTERISTICS At TA = +25°C and V+ = 5.0V, unless otherwise noted. SHUTDOWN CURRENT vs TEMPERATURE QUIESCENT CURRENT vs TEMPERATURE 1.0 50 0.9 V+ = 5V 0.8 40 0.7 30 V+ = 2.7V ISD (µA) IQ (µA) 0.6 0.5 0.4 0.3 0.2 20 0.1 0.0 Serial Bus Inactive −0.
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" #$# " #$% www.ti.com SBOS273C − JUNE 2003 − REVISED FEBRUARY 2005 APPLICATIONS INFORMATION The TMP121 and TMP123 are 12-bit plus sign read-only digital temperature sensors optimal for thermal management and thermal protection applications. The TMP121 and the TMP123 communicate through a serial interface that is SPI-compatible. Temperature is converted to a 12-bit plus sign data word with 0.0625°C resolution.
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" #$# " #$% www.ti.com SBOS273C − JUNE 2003 − REVISED FEBRUARY 2005 Timing Diagrams 0.5s 0.25s The TMP121 and TMP123 are SPI-compatible. Figure 4 and Figure 5 describe the various timing requirements, with parameters defined in Table 3. 50µA (active) 20µA (idle) PARAMETER Figure 2.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel Diameter Width (mm) W1 (mm) TMP121AIDBVR SOT-23 DBV 6 3000 180.0 A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 8.4 3.2 3.1 1.39 4.0 8.0 Q3 TMP121AIDBVT SOT-23 DBV 6 250 180.0 8.4 3.2 3.1 1.39 4.0 8.0 Q3 TMP123AIDBVR SOT-23 DBV 6 3000 180.0 8.4 3.2 3.1 1.39 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TMP121AIDBVR SOT-23 DBV 6 3000 190.5 212.7 31.8 TMP121AIDBVT SOT-23 DBV 6 250 190.5 212.7 31.8 TMP123AIDBVR SOT-23 DBV 6 3000 190.5 212.7 31.8 TMP123AIDBVT SOT-23 DBV 6 250 190.5 212.7 31.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 16-Apr-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) TMP121AIDBVR SOT-23 DBV 6 3000 178.0 9.0 TMP121AIDBVT SOT-23 DBV 6 250 178.0 9.0 Pack Materials-Page 1 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.23 3.17 1.37 4.0 8.0 Q3 3.23 3.17 1.37 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Apr-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TMP121AIDBVR SOT-23 DBV 6 3000 180.0 180.0 18.0 TMP121AIDBVT SOT-23 DBV 6 250 180.0 180.0 18.
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