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3652

更新时间： 2024-01-03 21:10:34
品牌 Logo 应用领域
德州仪器 - TI 隔离放大器分离技术隔离技术
页数 文件大小 规格书
14页 149K
描述
Optically-Coupled Linear ISOLATION AMPLIFIERS

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中文翻译

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3652 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：MODULE包装说明：DIP-32
针数：32Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.69Is Samacsys：N
放大器类型：ISOLATION AMPLIFIER最大共模电压：2000 V
最小绝缘电压：2000 VJESD-30 代码：R-MDMA-P32
标称负供电电压 (Vsup)：-15 V功能数量：1
端子数量：32最高工作温度：85 °C
最低工作温度：封装主体材料：METAL
封装代码：DIP封装等效代码：DIP32,.9
封装形状：RECTANGULAR封装形式：MICROELECTRONIC ASSEMBLY
峰值回流温度（摄氏度）：NOT SPECIFIED电源：+-8/+-18 V
认证状态：Not Qualified子类别：Isolation Amplifier
标称供电电压 (Vsup)：15 V表面贴装：NO
温度等级：OTHER端子形式：PIN/PEG
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 SPECIFIEDBase Number Matches：1

3652 数据手册

 浏览型号3652的Datasheet PDF文件第7页浏览型号3652的Datasheet PDF文件第8页浏览型号3652的Datasheet PDF文件第9页浏览型号3652的Datasheet PDF文件第11页浏览型号3652的Datasheet PDF文件第12页浏览型号3652的Datasheet PDF文件第13页 
COMMON-MODE AND  
ISOLATION-MODE REJECTION  
APPLICATIONS  
Figure 8 shows a system where isolation amplifiers (3650)  
are used to measure the armature current and the armature  
voltage of a motor.  
The expression for the output error due to common-mode  
and isolation mode voltage is:  
VCM  
VISO  
The armature current of the motor is converted to a voltage  
by the calibrated shunt RS and then amplifier (adjustable  
gain) and isolated by the 3650.  
VOUT = G  
+
CMRR  
IMRR  
The armature voltage is sensed by the voltage divider (ad-  
justable) shown and then amplified and isolated by the 3650.  
GUARDING AND PROTECTION  
To preserve the excellent inherent isolation characteristics of  
these amplifiers, the following recommended practice should  
be noted.  
The 3650 provides the advantage of accurate current mea-  
surement in the presence of high common-mode voltage.  
Both 3650s provide the advantage of isolating the motor  
ground from the control system ground. Isolated power is  
provided by an isolated DC/DC converter (BB Model 722 or  
equivalent).  
1. Use shielded twisted pair of cable at the input as with  
any instrumentation amplifier.  
2. Care should be taken to minimize external capacitance.  
A symmetrical layout of external components to achieve  
balanced capacitance from the input terminals to output  
common will preserve high IMR.  
The 3652 is ideally suited for patient monitoring applica-  
tions as shown in Figure 9. The fact that it is a true balanced  
input instrumentation amplifier with very high differential  
and common-mode impedance means that it can greatly  
reduce the common-mode noise pick up due to imbalance in  
lead impedances that often appear in patient monitoring  
situations. The 3kV and 6kV shown in Figure 9 are the 10ms  
pulse ratings of the +IR and –IR inputs for the common-mode  
and differential input voltages with respect to input com-  
mon. The rating of the isolation barrier is 2000Vpk continu-  
3. External components and conductor patterns should be  
at a distance equal to or greater than the distance  
between the input and output terminals to prevent HV  
breakdown.  
4. Though not an absolute requirement, the use of lamin-  
ated or conformally coated printed circuit boards is  
recommended.  
G = 1V/V  
1MΩ  
4.99kΩ  
11  
+
9.76kΩ  
23  
17  
3650HG  
To  
500Ω  
4.99kΩ  
VA/100  
Voltage  
Sense  
20  
O/P Com  
VA  
(500V)  
10  
26  
–
–VCC  
13  
–V  
+VCC  
14  
12  
+V  
+VO  
V–  
E
O/P Com  
I/O Com  
C
V+  
722  
1.3kΩ  
–VO  
P+  
VOUT  
+V  
+15VDC  
–15VDC  
–V  
12  
14  
4.75kΩ  
13  
11  
+VCC  
26  
+
–VCC  
20  
500Ω  
23  
VS  
(100mV)  
3650JG  
RS  
To  
100VS  
Current  
Sense  
17  
O/P Com  
4.99kΩ  
10  
–
G = 100V/V  
FIGURE 8. Isolated Armature Current and Voltage Sensor.  
®
10  
3650/52  
1...7891011121314

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