TMP442 datasheet(49/57 Pages) TI2

Part #	TMP442

Description	TMP4719 High-Accuracy 3-Channel (2-Remote and 1-Local) 1.2V Logic Compatible Temperature Sensor with η-Factor

PDF	57 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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49 / 57 page

Remote junction temperature sensors are typically implemented in a noisy environment. Noise is most often

created by fast digital signals, and noise can corrupt measurements. The TMP4719 device has a built-in, 65kHz

low-pass filter on the inputs of D+ and D– to minimize the effects of noise. However, a bypass capacitor placed

differentially across the inputs of the remote temperature sensor is recommended to make the application more

robust against unwanted coupled signals. For this capacitor, select a value between 100pF and 3nF. Some

applications attain better overall accuracy with additional series resistance; however, this increased accuracy is

application-specific. When series resistance is added, the total value must not be greater than 1kΩ. If filtering is

required, suggested component values are 470pF and 50Ω on each input; exact values are application-specific.

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TMP4719

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TMP442 Datasheet(PDF) 49 Page - Texas Instruments