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RC4152 Datasheet, PDF (1/12 Pages) Fairchild Semiconductor – Voltage-to-Frequency Converters | |||
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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:
â Current-to-Frequency
â Temperature-to-Frequency
â Pressure-to-Frequency
â Capacitance-to-Frequency
â Frequency-to-Current
⢠Signal isolation:
â VFCâopto-isolatonâFVC
â ADC with opto-isolation
⢠Signal encoding:
â FSK modulation/demodulation
â 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 ï¬rst monolithic VFC available and
offers guaranteed temperature and accuracy speciï¬cations.
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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