參數(shù)資料
型號: MC33178DG
廠商: ON Semiconductor
文件頁數(shù): 4/19頁
文件大?。?/td> 0K
描述: IC OPAMP DUAL LOW PWR/NS 8-SOIC
標準包裝: 98
放大器類型: 通用
電路數(shù): 2
轉換速率: 2 V/µs
增益帶寬積: 5MHz
電流 - 輸入偏壓: 100nA
電壓 - 輸入偏移: 1500µV
電流 - 電源: 1.7mA
電流 - 輸出 / 通道: 100mA
電壓 - 電源,單路/雙路(±): 4 V ~ 36 V,±2 V ~ 18 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SOICN
包裝: 管件
產品目錄頁面: 1130 (CN2011-ZH PDF)
其它名稱: MC33178DG-ND
MC33178DGOS
MC33178, MC33179
http://onsemi.com
12
If a high source of resistance is used (R1 > 1.0 k
W), a
compensation capacitor equal to or greater than the input
capacitance of the op amp (10 pF) placed across the
feedback resistor (see Figure 35) can be used to neutralize
that pole and prevent outer loop oscillation. Since the closed
loop transient response will be a function of that
capacitance, it is important to choose the optimum value for
that capacitor. This can be determined by the following
Equation:
(1)
CC + (1 ) [R1 R2])2
CL (ZO R2)
where: ZO is the output impedance of the op amp.
For moderately high capacitive loads (500 pF < CL
< 1500 pF) the addition of a compensation resistor on the
order of 20
W between the output and the feedback loop will
help to decrease miller loop oscillation (see Figure 36). For
high capacitive loads (CL > 1500 pF), a combined
compensation scheme should be used (see Figure 37). Both
the compensation resistor and the compensation capacitor
affect the transient response and can be calculated for
optimum performance. The value of CC can be calculated
using Equation 1. The Equation to calculate RC is as follows:
(2)
RC + ZO
R1 R2
Figure 35. Compensation for
High Source Impedance
Figure 36. Compensation Circuit for
Moderate Capacitive Loads
Figure 37. Compensation Circuit for
High Capacitive Loads
R2
+
R1
ZL
CC
R2
RC
CL
R1
+
R2
CC
RC
CL
R1
+
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相關代理商/技術參數(shù)
參數(shù)描述
MC33178DG 制造商:ON Semiconductor 功能描述:Operational Amplifier (Op-Amp) IC
MC33178DMR2 功能描述:運算放大器 - 運放 2-18V Dual Low Power 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
MC33178DMR2G 功能描述:運算放大器 - 運放 2-18V Dual Low Power Industrial 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
MC33178DR2 功能描述:運算放大器 - 運放 2-18V Dual Low Power 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
MC33178DR2G 功能描述:運算放大器 - 運放 2-18V Dual Low Power Industrial 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel