TDA7491HV datasheet(20/50 Pages) STMICROELECTRONICS

Part #	TDA7491HV

Description	20 W 20 W dual BTL class-D audio amplifier

PDF	50 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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20 / 50 page

Figure 27. Power supply rejection ratio vs. frequency

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

20k

100

200

500

10k

Test Condition:

Vcc =16V,

RL= 6 ohm,

Rosc =39k , Cosc =100nF,

Vin=0,

Gv =30dB,

Tamb =25 ,

0dB refers to 500mV, 100Hz

Ripple frequency=100Hz

Ripple voltage=500mV

Figure 28. Power dissipation and efficiency vs. output power

Test Condition:

Vcc =16V,

RL= 6 ohm,

Rosc =39k , Cosc =100nF,

f =1kHz,

Gv =30dB,

Tamb =25

Vcc=16V

Rload=6ohm

Gain=30dB

f=1kHz

Figure 29. Closed-loop gain vs. frequency

-5

-4.5

-4

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

-0

+0.5

+1.5

30k

100

200

500

10k

20k

Gain=32dB

Gain=22dB

Gain=30dB

Gain=26dB

Test Condition:

Vcc =16V,

RL= 6 ohm,

Rosc =39k , Cosc =100nF,

0dB@f=1kHz,Po=1w,

Gv=32dB,

Tamb =25

TDA7491HV

6 Ω loads at VCC = 16 V

DS5624 - Rev 10

page 20/50

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