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參數資料
| 型號： | TL031MD |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS |
| 中文描述： | 增強型場效應低功耗低失調運算放大器 |
| 文件頁數： | 49/56頁 |
| 文件大?。?/td> | 887K |
| 代理商： | TL031MD |
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TL03x, TL03xA, TL03xY
ENHANCED-JFET LOW-POWER LOW-OFFSET
OPERATIONAL AMPLIFIERS
SLOS180B – FEBRUARY 1997 – REVISED FEBRUARY 1999
49
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
high-Q notch filter
In general, Texas Instruments enhanced-JFET operational amplifiers serve as excellent filters. The circuit in
Figure 64 provides a narrow notch at a specific frequency. Notch filters are designed to eliminate frequencies
that are interfering with the operation of an application. For this filter, the center frequency can be calculated as:
f
O
1
2
R1
C1
With the resistors and capacitors shown in Figure 64, the center frequency is 1 kHz. C1 = C3 = C2 + 2 and
R1 = R3 = 2
×
R2. The center frequency can be modified by varying these values. When adjusting the center
frequency, ensure that the operational amplifier has sufficient gain at the frequency required.
–
+
0.2
–8
G
f – Frequency – kHz
2
2
0.4
0.6
0.8
1
0.2
0.4
0.6
0.8
–7
–6
–5
–4
–3
–2
0
1
R1
R3
1.5 M
C2
220 pF
R3
750 k
C1
C3
110 pF
110 pF
1.5 M
15 V
–15 V
TL03x
VO
VI
–1
Figure 64. High-Q Notch Filter
相關PDF資料 |
PDF描述 |
|---|---|
| TL031MFK | ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL031MJG | ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL031MP | ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL031Y | ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL084FK | JFET-INPUT OPERATIONAL AMPLIFIERS |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TL031MFK | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL031MJG | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL031MLB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TL031MP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL031Y | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS |
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