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LM331AN PDF预览

LM331AN

更新时间: 2024-01-10 07:08:38
品牌 Logo 应用领域
美国国家半导体 - NSC 转换器模拟特殊功能转换器光电二极管
页数 文件大小 规格书
16页 281K
描述
Precision Voltage-to-Frequency Converters

LM331AN 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:DIP, DIP8,.3Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.23转换器类型:VOLTAGE TO FREQUENCY CONVERTER
JESD-30 代码:R-PDIP-T8JESD-609代码:e3
长度:9.817 mm最大线性误差 (EL):0.02%
湿度敏感等级:1最大负输入电压:-0.2 V
功能数量:1端子数量:8
最大工作频率:0.1 MHz最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP8,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):260最大正输入电压:3 V
电源:5 V认证状态:Not Qualified
座面最大高度:5.08 mm子类别:Analog Special Function Converters
最大压摆率:8 mA最大供电电压:20 V
最小供电电压:4.5 V标称供电电压:5 V
表面贴装:NO技术:BIPOLAR
温度等级:COMMERCIAL端子面层:Matte Tin (Sn)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:7.62 mmBase Number Matches:1

LM331AN 数据手册

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December 1994  
LM131A/LM131, LM231A/LM231, LM331A/LM331  
Precision Voltage-to-Frequency Converters  
General Description  
The LM131/LM231/LM331 family of voltage-to-frequency  
converters are ideally suited for use in simple low-cost cir-  
cuits for analog-to-digital conversion, precision frequency-  
to-voltage conversion, long-term integration, linear frequen-  
cy 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 ad-  
vantages of the voltage-to-frequency conversion tech-  
niques, and is easy to apply in all standard voltage-to-fre-  
quency converter applications. Further, the LM131A/  
LM231A/LM331A attains a new high level of accuracy ver-  
sus temperature which could only be attained with expen-  
sive voltage-to-frequency modules. Additionally the LM131  
is ideally suited for use in digital systems at low power sup-  
ply voltages and can provide low-cost analog-to-digital con-  
version in microprocessor-controlled systems. And, the fre-  
quency from a battery powered voltage-to-frequency con-  
verter can be easily channeled through a simple photoisola-  
tor to provide isolation against high common mode levels.  
has low bias currents without degrading the quick response  
necessary for 100 kHz voltage-to-frequency conversion.  
And the output is capable of driving 3 TTL loads, or a high  
voltage output up to 40V, yet is short-circuit-proof against  
V
CC  
.
Features  
Y
Guaranteed linearity 0.01% max  
Y
Improved performance in existing voltage-to-frequency  
conversion applications  
Y
Split or single supply operation  
Y
Operates on single 5V supply  
Y
Pulse output compatible with all logic forms  
Y
g
Excellent temperature stability, 50 ppm/ C max  
§
Y
Y
Low power dissipation, 15 mW typical at 5V  
Wide dynamic range, 100 dB min at 10 kHz full scale  
frequency  
Y
Y
Wide range of full scale frequency, 1 Hz to 100 kHz  
Low cost  
The LM131/LM231/LM331 utilizes  
a new temperature-  
compensated band-gap reference circuit, to provide excel-  
lent accuracy over the full operating temperature range, at  
power supplies as low as 4.0V. The precision timer circuit  
Typical Applications  
V
R
1
TL/H/5680–1  
IN  
S
e
f
#
#
OUT  
2.09 V  
R
R C  
t t  
L
*Use stable components with low temperature coefficients. See Typical Applications section.  
**0.1mF or 1mF, See ‘‘Principles of Operation.’’  
FIGURE 1. Simple Stand-Alone Voltage-to-Frequency Converter  
e
g
with 0.03% Typical Linearity (f  
10 Hz to 11 kHz)  
C
1995 National Semiconductor Corporation  
TL/H/5680  
RRD-B30M115/Printed in U. S. A.  

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