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TMP75B Datenblatt(PDF) 7 Page - Texas Instruments |
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TMP75B Datenblatt(HTML) 7 Page - Texas Instruments |
7 / 31 page SDA SCL A0 A1 A2 V S GND ALERT I N x I Thermal BJT ADC Control Logic Device Register Bank Serial Interface Oscillator Voltage Regulator TMP75B www.ti.com SBOS706B – APRIL 2014 – REVISED AUGUST 2014 7 Detailed Description 7.1 Overview The TMP75B is a digital temperature sensor optimal for thermal management and thermal protection applications. The TMP75B is two-wire and SMBus interface compatible, and is specified over a temperature range of –55°C to +125°C. The temperature sensing device for the TMP75B is the chip itself. A bipolar junction transistor (BJT) inside the chip is used in a band-gap configuration to produce a voltage proportional to the chip temperature. The voltage is digitized and converted to a 12-bit temperature result in degrees Celsius, with a resolution of 0.0625°C. The package leads provide the primary thermal path because of the lower thermal resistance of the metal. Thus, the temperature result is equivalent to the local temperature of the printed circuit board (PCB) where the sensor is mounted. 7.2 Functional Block Diagram Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: TMP75B |
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