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Description
Precision Voltage-to-Frequency Converters
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The parameters and performance indicators of this product are sourced from the internet. In case of discrepancies, please refer to the manufacturer's technical specifications!！
Below is the parameter table and instructions for the LM331AN Frequency-to-Voltage (F/V) Converter.
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Supply Voltage | Vcc | 5 | 10 | 30 | V | |
| Supply Current | ICC | 2.5 | 4.5 | 8.0 | mA | Vcc = 30V |
| Output Voltage Range | Vout | 0.01 | - | Vcc - 1.5 | V | |
| Frequency Input Range | fin | 0.1 | - | 1000 | kHz | |
| Temperature Coefficient | TC | -50 | 0 | 50 | ppm/°C | Vout = 10V, fin = 1kHz |
| Linearity Error | LinErr | -0.01 | 0 | 0.01 | % | fin = 1kHz |
| Rise Time | tr | - | 10 | 20 | μs | Vout = 10V, fin = 1kHz |
| Fall Time | tf | - | 10 | 20 | μs | Vout = 10V, fin = 1kHz |
| Power Dissipation | Pd | - | 750 | 1000 | mW | Tj = 25°C |
| Operating Temperature Range | Toper | -40 | 25 | 125 | °C | |
| Storage Temperature Range | Tstg | -65 | - | 150 | °C |
Supply Voltage (Vcc):
Frequency Input (fin):
Requiredf_in pin.Output Voltage (Vout):
Temperature Coefficient:
Linearity Error:
Rise and Fall Time:
Power Dissipation:
Operating and Storage Temperature:
Pin Configuration:
Circuit Design:
Testing and Troubleshooting:
By following these instructions, you can effectively use the LM331AN in your frequency-to-voltage conversion applications.
(For reference only)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 Temperafure Stability : ±50 ppm/℃ 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
● Low Cost
DESCRIPTION
The LM231/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 LM231A/LM331A attain a new high level of accuracy versus temperature which could only be attained with expensive voltage-to-frequency modules. Additionally the LM231/331 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.
The LM231/LM331 utilize a new temperature-compensated band-gap reference circuit, to provide excellent accuracy over the full operating temperature range, at power supplies as low as 4.0V. The precision timer circuit has low bias currents without degrading the quick response necessary for 100 kHz voltage-to-frequency conversion. And the output are capable of driving 3 TTL loads, or a high voltage output up to 40V, yet is short-circuit-proof against VCC.
| QUANTITY | UNIT PRICE | PLUS UNIT PRICE | TOTAL PRICE |
|---|---|---|---|
| ≥1: | US $0.98208 | US $0.88387 | US $0.88387 |
| ≥5: | US $0.73656 | US $0.66290 | US $3.31450 |
| ≥10: | US $0.51559 | US $0.46403 | US $4.64030 |
| ≥20: | US $0.49104 | US $0.44194 | US $8.83880 |
| ≥50: | US $0.44194 | US $0.39775 | US $19.88750 |
| ≥100: | US $0.42966 | US $0.38669 | US $38.66900 |
| ≥200: | US $0.41738 | US $0.37564 | US $75.12800 |
| ≥500: | US $0.40511 | US $0.36460 | US $182.30000 |
| ≥1000: | US $0.39283 | US $0.35355 | US $353.55000 |
Substitute (equivalent) Product
| Substitute Product | Description |
|---|---|
| NE555P | A general-purpose timer IC suitable for applications requiring precision time delays or oscillation. |
| LM2907N | A frequency-to-voltage converter with improved performance, designed for automotive and industrial applications. |
| LM565CN | A phase-locked loop (PLL) IC used for precise frequency control applications. |
| LMx93N | A series of voltage-controlled oscillators (VCOs) for use in a variety of timing and frequency control applications. |
| LM2917N | A versatile frequency-to-voltage converter designed for a wide range of automotive and industrial frequency sensing and control applications. |
Product Usage
The LM331AN is a voltage-to-frequency (V/F) and frequency-to-voltage (F/V) converter, making it versatile for a variety of applications. Here are some typical circuits that use the LM331AN:
Voltage-to-Frequency Converter Circuit:
Frequency-to-Voltage Converter Circuit:
Analog Signal Transmission:
Analog Data Acquisition Systems:
Phase-Locked Loops (PLLs):
Measurement Instruments:
PWM Demodulation:
Function Generators:
Frequency Counters:
Analog-to-Digital Conversion Front-End:
In these applications, the LM331AN is appreciated for its accuracy, stability, and the simplicity of the peripheral circuits needed to implement the desired functionality.
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All UTSOURCE purchases have a 90 days money back return policy, plus a 100 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
LM331AN
LM331AN has several brands around the world that may have alternate names for LM331AN due to regional differences or acquisition. LM331AN may also be known as the following names:
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