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TC9400EJD PDF预览

TC9400EJD

更新时间： 2024-09-16 22:07:19
品牌 Logo 应用领域
美国微芯 - MICROCHIP 转换器模拟特殊功能转换器
页数 文件大小 规格书
20页 504K
描述
Voltage-to-Frequency/Frequency-to-Voltage Converters

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中文翻译

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TC9400EJD 技术参数

是否Rohs认证：符合生命周期：Obsolete
零件包装代码：DIP包装说明：DIP, DIP14,.3
针数：14Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.58Is Samacsys：N
转换器类型：VOLTAGE TO FREQUENCY CONVERTERJESD-30 代码：R-GDIP-T14
JESD-609代码：e3长度：19.305 mm
最大线性误差 (EL)：0.25%最大负输入电压：-2 V
最大负电源电压：-7.5 V最小负电源电压：-4 V
标称负供电电压：-5 V功能数量：1
端子数量：14最大工作频率：0.1 MHz
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：CERAMIC, GLASS-SEALED封装代码：DIP
封装等效代码：DIP14,.3封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT SPECIFIED
最大正输入电压：5 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最大供电电压：7.5 V
最小供电电压：4 V标称供电电压：5 V
表面贴装：NO技术：CMOS
温度等级：INDUSTRIAL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：NOT SPECIFIED
宽度：7.62 mmBase Number Matches：1

TC9400EJD 数据手册

 浏览型号TC9400EJD的Datasheet PDF文件第4页浏览型号TC9400EJD的Datasheet PDF文件第5页浏览型号TC9400EJD的Datasheet PDF文件第6页浏览型号TC9400EJD的Datasheet PDF文件第8页浏览型号TC9400EJD的Datasheet PDF文件第9页浏览型号TC9400EJD的Datasheet PDF文件第10页 
TC9400/9401/9402  
input is balanced out by fixed charges from the refer-  
ence voltage. As the input voltage is increased, the  
number of reference pulses required to maintain bal-  
ance increases, which causes the output frequency to  
also increase. Since each charge increment is fixed, the  
increase in frequency with voltage is linear. In addition,  
the accuracy of the output pulse width does not directly  
affect the linearity of the V/F. The pulse must simply be  
long enough for full charge transfer to take place.  
3.0  
3.1  
DETAILED DESCRIPTION  
Voltage-to-Frequency (V/F) Circuit  
Description  
The TC9400 V/F converter operates on the principal of  
charge balancing. The operation of the TC9400 is eas-  
ily understood by referring to Figure 3-1. The input volt-  
age (V ) is converted to a current (I ) by the input  
IN  
IN  
resistor. This current is then converted to a charge on  
the integrating capacitor and shows up as a linearly  
decreasing voltage at the output of the Op Amp. The  
lower limit of the output swing is set by the threshold  
detector, which causes the reference voltage to be  
applied to the reference capacitor for a time period long  
enough to charge the capacitor to the reference volt-  
age. This action reduces the charge on the integrating  
The TC9400 contains a "self-start" circuit to ensure the  
V/F converter always operates properly when power is  
first applied. In the event that, during power-on, the Op  
Amp output is below the threshold and C  
is already  
REF  
charged, a positive voltage step will not occur. The Op  
Amp output will continue to decrease until it crosses the  
-3.0V threshold of the "self-start" comparator. When  
this happens, an internal resistor is connected to the  
Op Amp input, which forces the output to go positive  
until the TC9400 is in its Normal Operating mode.  
capacitor by a fixed amount (q = C  
x V  
), causing  
REF  
REF  
the Op Amp output to step up a finite amount.  
At the end of the charging period, C is shorted out.  
REF  
The TC9400 utilizes low power CMOS processing for  
low input bias and offset currents, with very low power  
dissipation. The open drain N-channel output FETs  
provide high voltage and high current sink capability.  
This dissipates the charge stored on the reference  
capacitor, so that when the output again crosses zero,  
the system is ready to recycle. In this manner, the con-  
tinued discharging of the integrating capacitor by the  
FIGURE 3-1:  
10Hz TO 10kHz V/F CONVERTER  
+5V  
+
5V  
14  
V
R
10kΩ  
L
DD  
F
Threshold  
OUT  
8
11  
Detect  
3µsec  
Delay  
+
5V  
Threshold  
Detector  
R
10kΩ  
L
F
/2  
OUT  
10  
9
Self-  
Start  
÷2  
-3V  
12 AMP OUT  
Output  
Common  
V
OUT  
REF  
5
20kΩ  
C
INT  
820pF  
TC9400  
TC9401  
TC9402  
C
180pF  
REF  
12pF  
R
IN  
1MΩ  
INPUT  
60pF  
I
IN  
3
V
IN  
–
+5V  
Op Amp  
+
Zero Adjust  
0V –10V  
50kΩ  
510kΩ  
2
V
V
7
I
GND  
6
SS  
REF  
BIAS  
-5V  
Offset  
1
4
10kΩ  
R
Adjust  
BIAS  
100kΩ  
Reference Voltage  
(Typically -5V)  
-5V  
2002 Microchip Technology Inc.  
DS21483B-page 7  
1...45678910...20

中文翻译

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TC9400EJD 替代型号

型号 品牌 替代类型 描述 数据表
TC9402EJD MICROCHIP

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