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RC4152M fiches techniques PDF

Fairchild Semiconductor - Voltage-to-Frequency Converters

Numéro de référence RC4152M
Description Voltage-to-Frequency Converters
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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RC4152M fiche technique
RC4152
Voltage-to-Frequency Converters
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
Switched
Current 1
Source Output
Switched
Reference 2
Output
Open Collector
Output
3
Ground 4
4152
Switched
Current
Source
Switched
Voltage
Reference
Voltage
Reference
8 -VS
Open Loop
Comparator
7
Comparator
Inputs
Precision
One Shot
Open Collector
Logic Output
Transistor
6
One Shot
5 Timing
4152-01
Rev. 1.0.1

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