MC34119D 查看數據表（PDF） - Contek Microelectronics

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MC34119D

LOW POWER AUDIO AMPLIFIER

Contek Microelectronics 

Freescale SMemC3i4c1o19nductor, Inc.

Figure 22. Audio Amplifier with Bass Suppression

75 k

0.05 0.05

6 VCC

5.1 k 5.1 k

4

3

0.1

Input

5.0 µF 2

–

#1

+

4.0 k 4.0 k

50 k

125 k

–#2

+

50 k

MC34119

7

Bias

Circuit

Gnd

5

Speaker

8

1

Disable

Figure 23. Frequency Response of Figure 22

36

32

24

16

8.0

0

100

1.0 k

10 k 20 k

f, FREQUENCY (Hz)

Figure 24. Audio Amplifier with Bandpass

1000 pF

100 k

1000 pF

0.05 0.05

100 k

6 VCC

5.1 k 5.1 k

4

3

0.1

Input

5.0 µF 2

–

#1

+

4.0 k 4.0 k

50 k

–

125 k

#2

+

50 k

MC34119

7

Bias

Circuit

Gnd

5

Speaker

8

1 Disable

Figure 25. Frequency Response of Figure 24

36

32

24

16

8.0

0

100

1.0 k

10 k 20 k

f, FREQUENCY (Hz)

Audio Input

Figure 26. Split Supply Operation

Ci

0.1

Ri

3.0 k

Vin 4

FC1 3

Rf 75 k

6 VCC (+1.0 V to +8.0 V)

–

#1

+

4.0 k 4.0 k

5 VO1

Speaker

50 k

–

FC2 2 125 k

#2

+

8 VO2

50 k

MC34119

Bias 1 CD

Circuit

4700

7

VEE

(–1.0 V to –8.0 V)

10 k VCC

NOTE: If VCC and VEE are not symmetrical about ground then FC1 must be

connected through a capacitor to ground as shown on the front page.

VEE

20 k

Chip Disable

20 k

MOTOROLA ANALOG IC DEVICEFDoArTMA ore Information On This Product,

9

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