IL135Z Просмотр технического описания (PDF) - IK Semicon Co., Ltd

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IL135Z

Integrated circuit of temperature sensor

IK Semicon Co., Ltd 

IL135Z

Nominally IC output calibrated to the value 10 mV/ оК.

To ensure measurement precision they apply some rules. Degradation of the precision when self-

heating is proper to any devices of temperature sensors. The circuit should operate at low operating

current but sufficient for controlling the sensor and its calibration circuit at maximum operating

temperature.

When using the sensor in the field with constant thermal resistance, error when self-heating may

be reduced by external calibration. It can be done at the circuit bias when applying temperature-

stabilized current. Thus heating will be proportional to Zener diode voltage. In this case error when

self-heating is proportional to absolute temperature as the error of scaling coefficient.

Typical application circuits.

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Figure 14 – Basic circuit of temperature sensor

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Рисунок 15 – Схема применения с

широким диапазоном напряжения

питания

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Figure 16 – Temperature sensor with external

calibration *

Figure 17 – Sequential sensor connection for

increase of temperature bias voltage–

6

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