參數(shù)資料
型號: MCP6275
廠商: Microchip Technology Inc.
英文描述: 170 UA, 2 MHz Rail-to-Rail Op Amp
中文描述: 170聯(lián)合航空表示,2 MHz的軌到軌運算放大器
文件頁數(shù): 16/34頁
文件大?。?/td> 596K
代理商: MCP6275
MCP6271/2/3/4/5
DS21810D-page 16
2004 Microchip Technology Inc.
4.8.3.6
Second-Order Sallen-Key with an
Extra Pole-Zero Pair
Figure 4-14 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
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 4-14:
Low-Pass Filter with an Extra Pole-Zero Pair and
Chip Select.
Second-Order Sallen-Key
4.8.3.7
Capacitorless Second-Order
Low-Pass filter with Chip Select
The low-pass filter shown in Figure 4-15 does not
require external capacitors and uses only three exter-
nal resistors; the op amp’s GBWP sets the corner fre-
quency. R
1
and R
2
are used to set the circuit gain. R
3
is used to set the Q. To avoid gain-peaking in the
frequency response, Q needs to be low (lower values
need to be selected for R
3
). Note that the amplifier
bandwidth varies greatly over temperature and
process. This configuration, however, provides a low-
cost solution for applications with high bandwidth
requirements.
FIGURE 4-15:
Low-Pass Filter with Chip Select.
Capacitorless Second-Order
A
B
CS
R
2
C
1
R
1
V
IN
V
OUT
R
4
R
3
C
2
C
3
R
5
MCP6275
R
6
A
B
CS
V
REF
V
IN
V
OUT
R
2
R
1
R
3
MCP6275
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP6275-E/MS 功能描述:運算放大器 - 運放 Dual Connected 2MHz 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
MCP6275-E/P 功能描述:運算放大器 - 運放 Dual Connected 2MHz 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
MCP6275-E/SN 功能描述:運算放大器 - 運放 Dual Connected 2MHz 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
MCP6275T-E/MS 功能描述:運算放大器 - 運放 Dual Connected 2MHz 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
MCP6275T-E/SN 功能描述:運算放大器 - 運放 Dual Connected 2MHz 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