LM231中文资料具有 1Hz 至 100KHz 满量程频率的精密压频转换器（宽工作温度）数据手册TI规格书

描述 Description

The LMx31 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 LMx31A attain a new high level of accuracy versus temperature which could only be attained with expensive voltage-to-frequency modules. Additionally the LMx31 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 LMx31 uses 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 V. 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 40 V, yet is short-circuit-proof against VCC.

特性 Features

• Ensured Linearity 0.01% Maximum
• Improved Performance in Existing Voltage-to- Frequency Conversion Applications
• Split or Single-Supply Operation
• Operates on Single 5-V Supply
• Pulse Output Compatible With All Logic Forms
• Excellent Temperature Stability: ±50 ppm/°C Maximum
• Low Power Consumption: 15 mW Typical at 5 V
• Wide Dynamic Range, 100 dB Minimum at 10-kHz Full Scale Frequency
• Wide Range of Full Scale Frequency: 1 Hz to 100 kHz
• Low-Cost

简介

LM231属于集成电路（IC）的V/FF/V转换器。由TI制造生产的LM231V/F 和 F/V 转换器压频转换集成电路 (IC) 监视输入电压并输出比例频率，以用于汽车传感、电池监测、模数转换和信号隔离等应用。频压转换 IC 输出与输入频率成比例的模拟电压，用于速度感应、转速计、巡航控制和触摸式开关等仪器和仪表。