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參數(shù)資料
| 型號： | MCP6285 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 450 UA, 5 MHz Rail-to-Rail Op Amp |
| 中文描述： | 450聯(lián)合航空表示，5兆赫軌到軌運算放大器 |
| 文件頁數(shù)： | 15/32頁 |
| 文件大?。?/td> | 580K |
| 代理商： | MCP6285 |
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2004 Microchip Technology Inc.
DS21811D-page 15
MCP6281/2/3/4/5
4.8.3.4
Buffered Non-inverting Integrator
Figure 4-12 shows a lossy non-inverting integrator that
is buffered and has a Chip Select input. Op amp A is
configured as a non-inverting integrator. In this config-
uration, matching the impedance at each input is
recommended. R
F
is used to provide a feedback loop
at frequencies << 1/(2
π
R
1
C
1
) and makes this a lossy
integrator (it has a finite gain at DC). Op amp B is used
to isolate the load from the integrator.
FIGURE 4-12:
Integrator with Chip Select.
Buffered Non-inverting
4.8.3.5
Inverting Integrator with Active
Compensation and Chip Select
Figure 4-13 uses an active compensator (op amp B) to
compensate for the non-ideal op amp characteristics
introduced at higher frequencies. This circuit uses
op amp B as a unity-gain buffer to isolate the integration
capacitor C
1
from op amp A and drives the capacitor
with low-impedance source. Since both op amps are
matched very well, they provide a higher quality
integrator.
FIGURE 4-13:
Compensation.
Integrator Circuit with Active
4.8.3.6
Second-Order MFB Low-Pass Filter
with an Extra Pole-Zero Pair
Figure 4-14 is a second-order multiple feedback low-
pass filter with Chip Select. Use the FilterLab
software
from Microchip to determine the R and C values for the
op amp A’s second-order filter. Op amp B can be used
to add a pole-zero pair using C
3
, R
6
and R
7
.
FIGURE 4-14:
Feedback Low-Pass Filter with an Extra
Pole-Zero Pair.
Second-Order Multiple
4.8.3.7
Second-Order Sallen-Key Low-Pass
Filter with an Extra Pole-Zero Pair
Figure 4-15 is a second-order Sallen-Key low-pass
filter with Chip Select. Use the FilterLab
software from
Microchip to determine the R and C values for the op
amp A’s second-order filter. Op amp B can be used to
add a pole-zero pair using C
3
, R
5
and R
6
.
FIGURE 4-15:
Low-Pass Filter with an Extra Pole-Zero Pair and
Chip Select.
Second-Order Sallen-Key
A
B
CS
R
F
C
1
R
2
C
2
R
1
V
IN
V
OUT
MCP6285
R
1
C
1
R
2
R
F
||
(
)
C
2
=
A
CS
B
V
IN
V
OUT
R
1
C
1
MCP6285
A
B
CS
R
1
C
1
R
5
R
4
V
IN
V
OUT
C
2
R
3
R
2
R
6
C
3
MCP6285
R
7
A
B
CS
R
2
C
1
R
1
V
IN
V
OUT
R
4
R
3
C
2
C
3
R
5
MCP6285
R
6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP6285-E/MS | 功能描述:運算放大器 - 運放 Dual Connected 5MHz 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 |
| MCP6285-E/P | 功能描述:運算放大器 - 運放 Dual Connected 5MHz 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 |
| MCP6285-E/SN | 功能描述:運算放大器 - 運放 Dual Connected 5MHz 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 |
| MCP6285T-E/MS | 功能描述:運算放大器 - 運放 Dual Connected 5MHz 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 |
| MCP6285T-E/SN | 功能描述:運算放大器 - 運放 Dual Connected 5MHz 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 |
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