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TL032AID View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
TL032AID ENHANCED-JFET LOW-POWER LOW-OFFSET OPERATIONAL AMPLIFIERS TI
Texas Instruments TI
TL032AID Datasheet PDF : 68 Pages
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TL03x, TL03xA
ENHANCED-JFET LOW-POWER LOW-OFFSET
OPERATIONAL AMPLIFIERS
SLOS180C FEBRUARY 1997 REVISED DECEMBER 2001
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:
+ fO
2p
1
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.
15 V
R1
R3
VI
1.5 M1.5 M
VO
TL03x
C2
15 V
220 pF
R3
C1
750 k
C3
110 pF
110 pF
2
1
0
1
2
3
4
5
6
7
8
0.2 0.4 0.6 0.8 1 0.2 0.4 0.6 0.8 2
f Frequency kHz
Figure 64. High-Q Notch Filter
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
43
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