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AM313 数据表(PDF) 3 Page - Analog Microelectronics |
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AM313 数据表(HTML) 3 Page - Analog Microelectronics |
3 / 4 page IC FOR PROXIMITY DETECTOR AM 313 analog microelectronics April 2005 3/4 ABSOLUTE MAXIMUM RATINGS Supply Voltage VCC 35V Output Voltage UQ 32V Output Current IQL 20mA Junction Temperature TJ 150°C Power Dissipation at Tamb = 25°C PD = 600mW Derate for Tamb > 25°C 1/RΘ = 5mW/°C Storage Temperature Range Tst – 55...125°C Operating Temperature Range Tamb – 25...85°C (VCC = 15V to 35V) Tamb – 20...85°C (VCC = 4.75V to 35V) FUNCTIONAL DESCRIPTION The proximity detection is based on the amplitude attenuation of an LC–oscillator which depends on the distance to a metal object. The signal from the oscillator is rectified and filtered, then detected by a Schmitt–Trigger which switches the outputs Q (for close switch operation) and Q (for open switch operation). An additional LED output shows the on-state of the detection. The LED is blanked in the case of short circuit. To protect the circuit from overload, the outputs are disconnected and retested periodically. The limitation of the output current is set by the resistor Rm. The temperature compensation to adapt the oscillator voltage to different types of external LC resonators is performed by connecting a resistor between pins 7 (VREF) and 2 (RK). The circuit has a power–on–delay which is adjusted with CABT. Within this delay, the outputs Q and Q are set to high level. FUNCTIONAL DIAGRAMS AM313 1 2 3 4 5 6 7 8 9 10 11 14 15 16 VREF VCC LED R m Z 2 Q Q T Z 1 D 2 C R D 1 V CC Output Ground R S R D R H R K C OSC L Figure 2 |
类似零件编号 - AM313 |
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类似说明 - AM313 |
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