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LM331 - Precision Voltage-to-Frequency Converter
LM331 - Precision Voltage-to-Frequency Converter
The LM331 family of voltage-to-frequency converters are ideally suited for use in simple low-cost circuits for analog-to-digital conversion or precision frequency-to-voltage conversion.
Descrição
LM331 - Precision Voltage-to-Frequency Converter
The LM331 family of voltage-to-frequency converters are ideally suited for use in simple low-cost circuits for analog-to-digital conversion, precision frequency-to-voltage conversion, long-term integration, linear frequency modulation or demodulation, and many other functions. The output when used as a voltage-to-frequency converter is a pulse train at a frequency precisely proportional to the applied input voltage. Thus, it provides all the inherent advantages of the voltage-to-frequency conversion techniques, and is easy to apply in all standard voltage-to-frequency converter applications. Further, the LM331A attain a new high level of accuracy versus temperature which could only be attained with expensive voltage-to-frequency modules. Additionally the LM331 are ideally suited for use in digital systems at low power supply voltages and can provide low-cost analog-to-digital conversion in microprocessor-controlled systems. And, the frequency from a battery powered voltage-to-frequency converter can be easily channeled through a simple photo isolator to provide isolation against high common mode levels.
Features
- Ensured Linearity 0.01% max
- Improved Performance in Existing Voltage-to-Frequency Conversion Applications
- Split or Single Supply Operation
- Operates on Single 5V Supply
- Pulse Output Compatible with All Logic Forms
- Excellent Temperature Stability: ±50 ppm/°C max
- Low Power Consumption: 15 mW Typical at 5V
- Wide Dynamic Range, 100 dB min at 10 kHz Full Scale Frequency
- Wide Range of Full Scale Frequency: 1 Hz to 100 kHz