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參數(shù)資料
| 型號(hào)： | MCP6291RT |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 1.0 mA, 10 MHz Rail-to-Rail Op Amp |
| 中文描述： | 1.0毫安，10 MHz的軌到軌運(yùn)算放大器 |
| 文件頁數(shù)： | 13/32頁 |
| 文件大?。?/td> | 589K |
| 代理商： | MCP6291RT |
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2004 Microchip Technology Inc.
DS21812D-page 13
MCP6291/2/3/4/5
FIGURE 4-6:
for Inverting Gain.
Example Guard Ring Layout
1.
For Inverting Gain and Transimpedance
Amplifiers (convert current to voltage, such as
photo detectors):
a.
Connect the guard ring to the non-inverting
input pin (V
IN
+). This biases the guard ring
to the same reference voltage as the op
amp (e.g., V
DD
/2 or ground).
b.
Connect the inverting pin (V
IN
–) to the input
with a wire that does not touch the PCB
surface.
Non-inverting Gain and Unity-Gain Buffer:
a.
Connect the non-inverting pin (V
IN
+) to the
input with a wire that does not touch the
PCB surface.
b.
Connect the guard ring to the inverting input
pin (V
IN
–). This biases the guard ring to the
common mode input voltage.
2.
4.8
Application Circuits
4.8.1
MULTIPLE FEEDBACK LOW-PASS
FILTER
The MCP6291/2/3/4/5 op amp can be used in active-
filter applications. Figure 4-7 shows an inverting, third-
order, multiple feedback low-pass filter that can be
used as an anti-aliasing filter.
FIGURE 4-7:
Pass Filter.
Multiple Feedback Low-
This filter, and others, can be designed using
Microchip’s FilterLab
software, which is available on
our web site (www.microchip.com).
4.8.2
PHOTODIODE AMPLIFIER
Figure 4-8 shows a photodiode biased in the photovol-
taic mode for high precision. The resistor R converts
the diode current I
D
to the voltage V
OUT
. The capacitor
is used to limit the bandwidth or to stabilize the circuit
against the diode’s capacitance (it is not always
needed).
FIGURE 4-8:
Photodiode Amplifier.
Guard Ring
V
SS
V
IN
–
V
IN
+
MCP6291
V
OUT
V
IN
V
DD
/2
R
3
C
3
C
1
R
1
R
2
C
4
R
4
MCP6291
V
OUT
I
D
V
DD
/2
R
C
light
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP6291RT-E/OT | 功能描述:運(yùn)算放大器 - 運(yùn)放 Single 10 MHz OP E temp rvs pinout RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MCP6291RT-E/OT | 制造商:Microchip Technology Inc 功能描述:Operational Amplifier (Op-Amp) IC |
| MCP6291T-E/MS | 功能描述:運(yùn)算放大器 - 運(yùn)放 Single 10MHz RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MCP6291T-E/OT | 功能描述:運(yùn)算放大器 - 運(yùn)放 Single 10 MHz OP E temp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MCP6291T-E/OT-CUT TAPE | 制造商:Microchip 功能描述:MCP6291 Series 6 V 10 MHz Rail-to-Rail I/O Operational Amplifier - SOT-23-5 |
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