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参数资料
| 型号： | LM331MWC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟专用变换器 |
| 英文描述： | VOLTAGE-FREQUENCY CONVERTER, 0.1 MHz, UUC |
| 封装： | WAFER |
| 文件页数： | 9/18页 |
| 文件大小： | 418K |
| 代理商： | LM331MWC |
National P/N LM331 - Precision Voltage-to-Frequency Converter
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 photoisolator 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.
Features
q
Guaranteed linearity 0.01% max
q
Improved performance in existing voltage-to-frequency conversion applications
q
Split or single supply operation
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Operates on single 5V supply
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Pulse output compatible with all logic forms
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Excellent temperature stability, ±50 ppm/°C max
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Low power dissipation, 15 mW typical at 5V
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Wide dynamic range, 100 dB min at 10 kHz full scale frequency
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Wide range of full scale frequency, 1 Hz to 100 kHz
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Low cost
Application Notes
Title
Size in Kbytes Date
View Online Download Receive via Email
AN-C: V/F Converter ICs Handle
Frequency-to-Voltage Needs
145 Kbytes
4-Nov-95 View Online
AN-240: Wide-Range Current-to-
Frequency Converters
128 Kbytes
4-Nov-95 View Online
AN-210: New Phase-Locked-
Loops Have Advantages as
Frequency to Voltage Converters
(and more)
183 Kbytes
4-Nov-95 View Online
AN-D: Versatile Monolithic V/Fs
Can Compute as Well as Convert
with High Accuracy
169 Kbytes
4-Nov-95 View Online
CN-1: Analog to Digital
Conversion Techniques with COPS
Family Microcontrollers
601 Kbytes
28-Jun-96 View Online
AN-285: An Acoustic Transformer
Powered Super-High Isolation
Amplifier
113 Kbytes
9-Apr-96 View Online
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM331.html (2 of 3) [Aug-09-2002 3:12:02 PM]
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM331N | 功能描述:电压频率转换及频率电压转换 RoHS:否 制造商:Texas Instruments 全标度频率:4000 KHz 线性误差:+/- 1 % FSR 电源电压-最大: 电源电压-最小: 最大工作温度:+ 85 C 最小工作温度:- 25 C 安装风格:Through Hole 封装 / 箱体:PDIP-14 封装:Tube |
| LM331N | 制造商:Texas Instruments 功能描述:IC V/F CONVERTER DIP8 331 |
| LM331N/A+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-to-Frequency Converter |
| LM331N/B+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-to-Frequency Converter |
| LM331N/HALF | 制造商:Texas Instruments 功能描述:IC V/F CONVERTER DIP8 331 |
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