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| 型號： | MCP6544T |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Push-Pull Output Sub-Microamp Comparators |
| 中文描述： | 推挽式輸出子微安比較 |
| 文件頁數(shù)： | 14/29頁 |
| 文件大小： | 573K |
| 代理商： | MCP6544T |
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MCP6541/2/3/4
DS21696C-page 14
2003 Microchip Technology Inc.
3.9
Typical Applications
3.9.1
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 3-9 shows an
example of this approach.
FIGURE 3-9:
Comparator.
Precise Inverting
3.9.2
WINDOWED COMPARATOR
Figure 3-10 shows one approach to designing a win-
dowed comparator. The AND gate produces a logic ‘
1
’
when the input voltage is between V
RB
and V
RT
(where
V
RT
> V
RB
).
FIGURE 3-10:
Windowed Comparator.
3.9.3
BISTABLE MULTI-VIBRATOR
A simple bistable multi-vibrator design is shown in
Figure 3-11. V
REF
needs to be between the power
supplies (V
SS
= GND and V
DD
) to achieve oscillation.
The output duty cycle changes with V
REF
.
FIGURE 3-11:
Bistable Multi-vibrator.
V
REF
V
DD
V
DD
R
1
R
2
V
OUT
V
IN
V
REF
MCP6041
MCP654X
V
RT
MCP6542
V
RB
V
IN
1/2
MCP6542
1/2
MCP6541
V
DD
R
1
R
2
R
3
V
REF
C
1
V
OUT
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