IL235Z

Korzhenevskogo 12, Minsk, 220064, Republic of

Belarus

Fax:

+375 (17) 278 28 22,

Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61,

277 69 16

E-mail: belms@belms.belpak.minsk.by

URL: www.bms.by

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.

Figure 14 – Basic circuit of temperature sensor

Figure 15 – Application circuit of temperature

sensor with wide range supply voltage

Figure 16 – Temperature sensor with external

calibration *

Figure 17 – Sequential sensor connection for

increase of temperature bias voltage–