TL080 datasheet(17/19 Pages) TI

17 / 19 page

TL080, TL081, TL082, TL084, TL081A, TL082A, TL084A

TL081B, TL082B, TL084B

JFET-INPUT OPERATIONAL AMPLIFIERS

SLOS081A–D2297, FEBRUARY 1977–REVISED NOVEMBER 1992

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77001

TYPICAL APPLICATION DATA

1/4

Output B

Output A

1.5 k

Ω

VCC –

43 k

Ω

220 pF

43 k

Ω

VCC +

30 k

Ω

VCC +

43 k

Ω

VCC –

16 k

Ω

43 k

Ω

Input

220 pF

16 k

Ω

VCC –

VCC +

30 k

Ω

VCC +

43 k

Ω

220 pF

43 k

Ω

VCC –

1.5 k

Ω

1/4

TL084

1/4

TL084

2 kHz/div

Second-Order Bandpass Filter

fo = 100 kHz, Q = 30, GAIN = 4

2 kHz/div

Cascaded Bandpass Filter

fo = 100 kHz, Q = 69, GAIN = 16

Output A

Output

Figure 28. Positive-Feedback Bandpass Filter

Rext

100

Ω

Balance

µF

50 pF

47 k

Ω

10 pF

TL080

27 k

Ω

µF

0.01

µF

0.00375

µF

220 k

Ω

VCC +

VCC –

VCC +

TL080

10 pF

5 k

Ω

Gain

µF

0.03

µF

10 k

Ω

10 k

Ω

0.03

µF

10 k

Ω

3.3 k

Ω

0.003

µF

0.003

µF

MAX

Treble

100 k

Ω

MIN

68 k

Ω

Output

Input

100

Ω

MIN

100 k

Ω

Bass

MAX

Figure 29. IC Preamplifier

TL080 数据表(PDF) 17 Page - Texas Instruments

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