Datenblatt-Suchmaschine für elektronische Bauteile |
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CS4161 Datenblatt(PDF) 4 Page - ON Semiconductor |
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CS4161 Datenblatt(HTML) 4 Page - ON Semiconductor |
4 / 8 page CS4161 http://onsemi.com 4 CIRCUIT OPERATION SPEED SENSOR INPUT SENSOR is a PNP comparator input which accepts either a sine wave or a square wave input. This input is protected from excursions above VCC as well as any below ground as long as the current is limited to 1.5 mA. It has an active clamp set to zero volts to prevent negative input voltages from disrupting normal operation. The sensor input can withstand 150 VDC as long as the input current is limited to 1.5 mA max. using a series resistor of 100 k Ω. COIL DRIVER OUTPUTS Simultaneously energizing the source and sink on either leg is not permitted, i.e. Q1 & Q2 or Q3 & Q4 cannot be energized simultaneously. Circuit function is not affected by inductive transients due to coil loads as specified in the Transition States section. The transition states occur as indicated in Table 1 without any intermediate states permitted. Table 1. Transition States State Coil A Coil B 0 + + 1 OFF + 2 – + 3 – OFF 4 – – 5 OFF – 6 + – 7 + OFF The polarity definition for the coil driver outputs is as follows: Polarity Connect Coil + Connect Coil – Positive (+) VCC GND Negative (–) GND VCC DIVIDER SELECT INPUT The speed sensor input frequency is either divided by one or divided by two depending on the state of the SELECT input as follows: Logic 0 = divide by 2. Logic 1 = divide by 1. Q1 Q2 Q3 Q4 Short Circuit Sense Resistor Short Circuit Sense Resistor VCC Coil GND Overvoltage and Short Circuit Protection Figure 2. Coil Driver Output |
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Ähnliche Beschreibung - CS4161 |
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