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IL135Z Schematic ( PDF Datasheet ) - IK Semiconductor

Teilenummer IL135Z
Beschreibung Precision Temperature Sensors
Hersteller IK Semiconductor
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Gesamt 10 Seiten
IL135Z Datasheet, Funktion
m TECHNICAL DATA
et4U.coIntegrated circuit of temperature sensor
IL135Z
ataSheMicrocircuit IL135Z is precision temperature sensor with
.Dcalibration capacity . Microcircuit operates as Zener diode with brake
wdown voltage being in direct proportion to to absolute temperature (10
wmV/OK). Full dynamic resistance of the circuit is less than 1 Оhm at
w operation current 450 µА...5 mА. The sensor calibrated at the
temperature 25OС,has typical error less than 1OС in the temperature
range above 100OС. The peculiarity of the circuit IL135Z is the linear
mdependence of output voltage versus temperature.
.coIC features
  calibration in OК
  initial measurement accuracy 1OK
U  range of operating supply current from 450 µА to 5 mА
t4Full dynamic resistance less than 1 Оhm
Packaged IC type:
IL135Z, КТ-26
ee Bottom view
Figure 1 - Package pin
www.DataSh definitions
Figure 2 - circuitry IL135Z. www.DataSheet4U.com
1






IL135Z Datasheet, Funktion
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.
IL135
Figure 14 – Basic circuit of temperature sensor
IL135
Рисунок 15 – Схема применения с
широким диапазоном напряжения
питания
IL135
IL135
Figure 16 – Temperature sensor with external
calibration *
Figure 17 – Sequential sensor connection for
increase of temperature bias voltage–
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