TCA355 查看數據表（PDF） - Infineon Technologies

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TCA355

Proximity Switch

Infineon Technologies 

TCA 305

TCA 355

L0, C0

RHy

RDi

D

RI; CI

CD

Resonant circuit

Hysteresis adjustment

Distance adjustment

Temperature compensation of the resonant circuit; possibly with series

resistance for the purpose of adjustment. The diode is not absolutely necessary.

Whether it is used or not depends on the temperature coefficient of the resonant

circuit.

Integration element. At pin 3 (integrating capacitance) we recommend a

capacitor of typ. 1 nF. To increase noise immunity this capacitor can be

substituted by an RC circuit with, e.g., RI = 1 MΩ and CI = 10 nF.

Delay capacitor

Dimensioning Examples in Accordance with CENELEC Standard (flush)

Ferrite pot core

Number of turns

Cross section of wire

L0

C0 (STYROFLEX®)

fOSC

Sn

RA (Metal)

CD

M 12

M 33 (7.35 × 3.6) mm

100

0.1 CuL

206 µH

1000 pF

appr. 350 kHz

4 mm

8.2 kΩ + 330 Ω

100 nF

M 18

N 22 (14.4 × 7.5) mm

80

20 × 0.05

268 µH

1.2 nF

appr. 280 kHz

8 mm

33 kΩ

100 nF

M 30

N 22 (25 × 8.9) mm

100

10 × 0.1

585 µH

3.3 nF

appr. 115 kHz

15 mm

22 kΩ + 2.7 kΩ

100 nF

Semiconductor Group

7

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