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MCP6542-I/SN 参数 Datasheet PDF下载

MCP6542-I/SN图片预览
型号: MCP6542-I/SN
PDF下载: 下载PDF文件 查看货源
内容描述: 推挽输出亚微安比较 [Push-Pull Output Sub-Microamp Comparators]
分类和应用: 比较器放大器放大器电路光电二极管PC
文件页数/大小: 34 页 / 1169 K
品牌: MICROCHIP [ MICROCHIP ]
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MCP6541/1R/1U/2/3/4  
4.10.3  
BISTABLE MULTI-VIBRATOR  
4.10 Typical Applications  
A simple bistable multi-vibrator design is shown in  
Figure 4-13. VREF needs to be between the power  
supplies (VSS = GND and VDD) to achieve oscillation.  
4.10.1  
PRECISE COMPARATOR  
Some applications require higher DC precision. An  
easy way to solve this problem is to use an amplifier  
(such as the MCP6041) to gain-up the input signal  
before it reaches the comparator. Figure 4-11 shows an  
example of this approach.  
The output duty cycle changes with VREF  
.
R1  
R2  
VREF  
VDD  
VDD  
VREF  
VOUT  
MCP6541  
MCP6041  
VDD  
MCP654X  
VIN  
C1  
R3  
R1  
R2  
VREF  
VOUT  
FIGURE 4-13:  
Bistable Multi-vibrator.  
FIGURE 4-11:  
Precise Inverting  
Comparator.  
4.10.2  
WINDOWED COMPARATOR  
Figure 4-12 shows one approach to designing a win-  
dowed comparator. The AND gate produces a logic ‘1’  
when the input voltage is between VRB and VRT (where  
VRT > VRB).  
VRT  
1/2  
MCP6542  
VIN  
1/2  
MCP6542  
VRB  
FIGURE 4-12:  
Windowed Comparator.  
DS21696E-page 18  
© 2006 Microchip Technology Inc.  
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