Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsTMP122AMDBVTEP

FEATURES

DESCRIPTION

APPLICATIONS

SUPPORTS DEFENSE, AEROSPACE,

TMP122-EP

www.ti.com

.......................................................................................................................................................................................... SBOS454 – NOVEMBER 2008

1.5 ° C ACCURATE PROGRAMMABLE DIGITAL TEMPERATURE SENSORS

WITH SPI™ INTERFACE

• Digital Output: SPI-Compatible Interface

• Programmable Resolution: 9 to 12 Bits + Sign

The TMP122 is an SPI-compatible temperature

sensor available in an SOT23-6 package. Requiring

• Aaccuracy: ± 1.5 ° C from -25 ° C to 85 ° C (max)

only a pull-up resistor for complete function, the

± 2.0 ° C from -55 ° C to 125 ° C (max)

TMP122 temperature sensor is capable of measuring

• Low Quiescent Current: 50 µ A

temperatures within 2 ° C of accuracy over a

• Wide Supply Range: 2.7 V to 5.5 V temperature range of -55 ° C to 125 ° C, with operation

up to 150 ° C. Programmable resolution,

• Tiny SOT23-6 Package

programmable set points and shut down function

• Operation to 150 ° C

provide versatility for any application. Low supply

• Programmable High/Low Setpoints

current and a supply range from 2.7 V to 5.5 V make

the TMP122 an excellent candidate for low-power

applications.

• Power-Supply Temperature Monitoring

The TMP122 is ideal for extended thermal

• Computer Peripheral Thermal Protection measurement in a variety of communication,

computer, consumer, environmental, industrial, and

• Notebook Computers

instrumentation applications.

• Cell Phones

• Battery Management

• Office Machines

• Thermostat Controls

• Environmental Monitoring and HVAC

• Electromechanical Device Temperature

AND MEDICAL APPLICATIONS

• Controlled Baseline

• One Assembly/Test Site

• One Fabrication Site

• Available in Military ( – 55 ° C/125 ° C)

Temperature Range

(1)

• Extended Product Life Cycle

• Extended Product-Change Notification

• Product Traceability

(1) Additional temperature ranges are available - contact factory

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2 SPI is a trademark of Motorola.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (19 pages)

PAGE 1
TMP122-EP www.ti.com .......................................................................................................................................................................................... SBOS454 – NOVEMBER 2008 1.5°C ACCURATE PROGRAMMABLE DIGITAL TEMPERATURE SENSORS WITH SPI™ INTERFACE FEATURES 1 • Digital Output: SPI-Compatible Interface • Programmable Resolution: 9 to 12 Bits + Sign • Aaccuracy: ±1.5°C from -25°C to 85°C (max) ±2.
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TMP122-EP SBOS454 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
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TMP122-EP www.ti.com .......................................................................................................................................................................................... SBOS454 – NOVEMBER 2008 ELECTRICAL CHARACTERISTICS over operating free-air temperature range (unless otherwise noted) PARAMETER Temperature input TEST CONDITIONS MIN Range Accuracy (temperature error) Resolution °C ±0.5 ±1.5 -55°C to 125°C ±1.0 ±2.0 -55°C to 150°C ±1.
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TMP122-EP SBOS454 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.
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TMP122-EP www.ti.com .......................................................................................................................................................................................... SBOS454 – NOVEMBER 2008 APPLICATION INFORMATION The TMP122 digital temperature sensor is optimal for thermal management and thermal protection applications. The TMP122 is SPI interface-compatible and specified for a temperature range of -55°C to 125°C.
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TMP122-EP SBOS454 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com Multiple commands may be strung together as illustrated in Figure 2. The TMP122 accepts commands alternating with 16-bit response data. On lowering CS, the part always responds with a READ from the address location indicated by the READ address register.
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TMP122-EP www.ti.com .......................................................................................................................................................................................... SBOS454 – NOVEMBER 2008 Figure 5. READ followed by READ Command and Response Figure 6. Data READ READ ADDRESS REGISTER Figure 7 shows the internal register structure of the TMP122/TMP124. Table III describes the addresses of the registers available.
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TMP122-EP SBOS454 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com Table 3.
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TMP122-EP www.ti.com .......................................................................................................................................................................................... SBOS454 – NOVEMBER 2008 THERMOSTAT MODE (TM1/TM0) The Thermostat Mode bits of the TMP122 indicate to the device whether to operate in Comparator Mode, Interrupt Mode or Interrupt Comparator Mode. For more information on Comparator and Interrupt Mode, see text HIGH and LOW limit registers.
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TMP122-EP SBOS454 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com Table 8.
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TMP122-EP www.ti.com .......................................................................................................................................................................................... SBOS454 – NOVEMBER 2008 DELAY TIME The Delay Bits control the amount of time delay between each conversion. This feature allows the user to maximize power savings by eliminating unnecessary conversions, and minimizing current consumption.
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TMP122-EP SBOS454 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com Figure 10. Output Data Timing Diagram Figure 11. High Impedance Output Timing Diagram Figure 12.
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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 1-Dec-2011 TAPE AND REEL INFORMATION *All dimensions are nominal Device TMP122AMDBVTEP Package Package Pins Type Drawing SPQ SOT-23 250 DBV 6 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 180.0 8.4 Pack Materials-Page 1 3.2 B0 (mm) K0 (mm) P1 (mm) 3.1 1.39 4.0 W Pin1 (mm) Quadrant 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 1-Dec-2011 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TMP122AMDBVTEP SOT-23 DBV 6 250 210.0 185.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.