TCA505BG Infineon Technologies, TCA505BG Datasheet
TCA505BG
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TCA505BG Summary of contents
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... IC TCA 505 B includes a number of useful extra functions that enable high-grade, inductive proximity switches to be designed for an attractive price/performance ratio and with space savings. Compared to earlier ICs for inductive proximity switches temperature drift, noise immunity and the switching frequency of the IC have been improved. Semiconductor Group ...
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Pin Configurations (top view) Pin Definitions and Functions Pin Symbol Function 1 LC Oscillator 2 Distance N.C. Not connected 4 Integrating capacitance Hysteresis Short-circuit detector 7 GND Ground 8 Q4 ...
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Functional Description and Application Operation Schematic Block Diagram Semiconductor Group 3 TCA 505 BG ...
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... Functional Description This circuit is used to design inductive proximity switches. The resonant circuit of the LC oscillator is implemented with an open half-pot ferrite and a capacitor in parallel (pin LC metallic target is moved closer to the open side of the half-pot ferrite, energy is drawn from the resonant circuit and the amplitude of the oscillation is reduced accordingly. This change in amplitude is transmitted to a threshold switch by means of a demodulator and triggers the outputs (see operation schematic) ...
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Circuit Diagram (simplified) Semiconductor Group 5 TCA 505 BG ...
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... Pin Functions Pin 1; LC The resonant circuit of the proximity switch is connected between LC and ground. Pin resistor between this pin and ground sets the current in the oscillator circuit. The greater the value of the resistor, the smaller is the current feed from the oscillator into the resonant circuit and the greater therefore is the switching distance ...
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Both the internal output stages and externally connected output stages can be protected against sustained short-circuits or overload. A limiting of the output current is an externally connected output stage during the turn-off delay must be ensured. Normally the current ...
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... the outputs are inhibited, until V S should not exceed fall below Semiconductor Group . In this way the delayed turn-ON operation described above D can remain open the supply voltage of the IC (when used as a two-wire proximity S range the outputs are turned S 8 TCA 505 This is of particular advantage S again reaches 8 V ...
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Absolute Maximum Ratings = – 110 ˚ Parameter Supply voltage Output voltages B open B connected Output currents Voltage Current on V REF Voltage on SC Current from R Di Current to R ...
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Characteristics – 110 ˚ Parameter Power Supply ( Current consumption Normal mode ( OFF) Two-wire operation OFF 4 V ...
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Characteristics (cont’ – 110 ˚ Parameter Two-Wire Regulator ( Turn-ON threshold (outputs active Turn-ON threshold (outputs disabled Hysteresis V – V ...
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... TCA 505 B just switches from D2 to D1. In this way LC the TCA 505 B, together with a suitably dimensioned resonant circuit, can form a proximity switch that exhibits a very good temperature coefficient ( 2.5 %) over the entire temperature range and without any kind of extra external wiring. ...
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Diagrams Reference Voltage versus Junction Temperature T j Semiconductor Group Current Consumption versus Junction Temperature T Switching Amplitude versus Frequency f 13 TCA 505 BG j ...
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Test Circuit 1 Test Circuit 2 Semiconductor Group 14 TCA 505 BG ...
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For explanation see under "Pin Function" Application Circuit 1 Input Circuitry (Use of pins LC, R Semiconductor Group , TCA 505 BG ...
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Application Circuit 2 Output Circuitry (Use of pins V P-switch, short-circuit-proof, LED indicator, configurable as normally closed or normally open Short-circuit-current sampling: Constant base current: 1) For dimensioning of C see characteristics for noise immunity ...
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Application Circuit 3 Output Circuitry (Use of pins V N-switch, short-circuit-proof, LED indicator, configurable as normally closed or normally open Short-circuit-current sampling: Constant base current: 1) For dimensioning of C see characteristics for noise immunity ...
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Application Circuit 4 Output Circuitry (Use of pins SC Q4, C P-switch, short-circuit-proof, configurable as normally closed or normally open Short-circuit-current sampling: During the sampling time, the short-circuit current within the IC is limited to a maximum of ...