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Fig.4 thd as a function of output power, Fig.5 thd as a function of frequency, Fig.6 ripple rejection as a function of frequency – Philips TDA7056AT User Manual

Page 7

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1998 Feb 23

7

NXP Semiconductors

Product specification

3 W mono BTL audio amplifier with DC
volume control

TDA7056AT

Fig.3

Quiescent current as a function of the
supply voltage.

V

5

= 1.4 V; no load.

handbook, halfpage

20

0

4

MGM578

8

12

16

0

4

20

8

12

16

Iq

(mA)

VP (V)

Fig.4 THD as a function of output power.

V

DC

= 1.4 V.

(1) V

P

= 12 V; R

L

= 16

Ω.

handbook, halfpage

12

0

MGM579

Po (W)

THD

(%)

10

1

1

10

2

4

6

10

8

(1)

Fig.5 THD as a function of frequency.

V

P

= 12 V, P

o

= 0.5 W, V

DC

= 1.4 V.

(1) R

L

= 16

Ω.

handbook, halfpage

0

2

4

6

8

MGM580

10

10

2

10

3

10

4

10

5

f (Hz)

THD

(%)

(1)

Fig.6 Ripple rejection as a function of frequency.

V

P

= 12 V; R

L

= 16

Ω; V

r

= 200 mV.

(1) V

7

= 0.3 V; R

s

= 5 k

Ω.

(2) V

7

= 1.4 V; R

s

= 0

Ω.

(3) V

7

= 1.4 V; R

s

= 5 k

Ω.

handbook, halfpage

0

100

20

40

60

80

MGM581

10

10

2

10

3

10

4

10

5

f (Hz)

RR

(dB)

(2)

(3)

(1)