TL034CDG4 datasheet(43/72 Pages) TI1

43 / 72 page

TL03x, TL03xA

ENHANCED-JFET LOW-POWER LOW-OFFSET

OPERATIONAL AMPLIFIERS

SLOS180C − FEBRUARY 1997 − REVISED DECEMBER 2001

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:

O +

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

f − Frequency − kHz

0.4

0.6

0.8

0.2

0.4

0.6

0.8

−7

−6

−5

−4

−3

−2

1.5 M

220 pF

750 k

110 pF

1.5 M

15 V

−15 V

TL03x

−1

Figure 64. High-Q Notch Filter

TL034CDG4 Datasheet(PDF) 43 Page - Texas Instruments

TL034CDG4 Datasheet(HTML) 43 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

Datasheet Download

Link URL