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RC4152 Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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RC4152 Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 12 page www.fairchildsemi.com Features • Single supply operation • Pulse output DTL/TTL/CMOS compatible • Programmable scale factor (K) • High noise rejection • Inherent monotonicity • Easily transmittable output • Simple full scale trim • Single-ended input, referenced to ground • V-F or F-V conversion • Voltage or current input • Wide dynamic range Applications • Precision voltage-to-frequency converters • Pulse-width modulators • Programmable pulse generators • Frequency-to-voltage converters • Integrating analog-to-digital converters • Long-term analog integrators • Signal conversion: – Current-to-Frequency – Temperature-to-Frequency – Pressure-to-Frequency – Capacitance-to-Frequency – Frequency-to-Current • Signal isolation: – VFC—opto-isolaton—FVC – ADC with opto-isolation • Signal encoding: – FSK modulation/demodulation – Pulse-width modulation • Frequency scaling • DC motor speed control Description The RC4152 is a monolithic circuit containing all of the active components needed to build a complete voltage-to- frequency converter. Circuits that convert a DC voltage to a pulse train can be built by adding a few resistors and capaci- tors to the internal comparator, one-shot, voltage reference, and switched current source. Frequency-to-voltage convert- ers (FVCs) and many other signal conditioning circuits are also easily created using these converters. The RC4151 was the first monolithic VFC available and offers guaranteed temperature and accuracy specifications. The converter is available in a standard 8-pin plastic DIP. Functional Block Diagram 4152-01 4152 1 2 3 4 5 6 7 8 -VS Comparator Inputs One Shot Timing Switched Current Source Switched Voltage Reference Voltage Reference Precision One Shot Open Collector Logic Output Transistor Open Loop Comparator Switched Current Source Output Switched Reference Output Open Collector Output Ground RC4152 Voltage-to-Frequency Converters Rev. 1.0.1 |
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