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TMP007 数据表(PDF) 10 Page - Texas Instruments |
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TMP007 数据表(HTML) 10 Page - Texas Instruments |
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10 / 55 page  ( ) 2 2 5 k T B 2hc 1 B T, watts / cm / m hc e 1 l æ ö ç ÷ ç ÷ l = m l ç ÷ l ç ÷ - è ø V+ AGND DGND 16-Bit ADC Gain Local Temperature IR Thermopile Sensor Voltage Reference Digital Control and Math Engine I 2C and SMBus Compatible Digital Interface ALERT ADR0 ADR1 SCL SDA TMP007 EEPROM Thot Tcold Thot Thot Thot + TMP007 SBOS685C – APRIL 2014 – REVISED JULY 2015 www.ti.com 7 Detailed Description 7.1 Overview The TMP007 is an integrated digital thermopile temperature sensor in a wafer chip-scale package (WCSP) that detects the temperature of a remote object by its infrared (IR) emission. It is optimal for thermal management and thermal protection applications where remote noncontact temperature sensing is desired. The TMP007 is two-wire and SMBus interface compatible, and is specified over the temperature range of –40°C to 125°C. The TMP007 contains registers for holding configuration and calibration information, temperature limits, local temperature, TDIE, measurement results, and the thermopile voltage measurement result. The local temperature and the thermopile voltage measurements are used by the math engine to calculate the object temperature, which is then stored in the respective register. In addition, the TMP007 has an internal EPROM memory that can be used to store the factory default values and custom values for coefficients and calibration parameters. The values in EPROM can be transferred to the registers either individually or as a complete set. The SDA (and SCL, if driven by an open-drain output) interface pin requires a pull-up resistor (10 k Ω, typical) as part of the communication bus. The ALERT pin is an open-drain output that must also use a pull-up resistor, or be left floating if unused. If desired, ALERT may be shared with other devices for a wired-OR implementation. 7.2 Functional Block Diagram 7.3 Feature Description The TMP007 senses the IR radiation that is emitted by all objects. The spectrum of the radiation depends only on the temperature and is given by Planck’s law, as shown in Equation 1: where • h = Planck’s constant • c = speed of light • kB = Boltzmann’s constant • λ = wavelength in microns (1) 10 Submit Documentation Feedback Copyright © 2014–2015, Texas Instruments Incorporated Product Folder Links: TMP007 |
类似零件编号 - TMP007 |
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类似说明 - TMP007 |
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