TDA7491HV datasheet(10/50 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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10 / 50 page

Characterization curves

The following characterization curves have been produced by using the TDA7491HV evaluation board.

The LC filter for 4 Ω load uses components of 15 μH and 470 nF, whilst that for 6 Ω load uses 22 μH and 220 nF

and that for 8 Ω load uses 33 μH and 220 nF.

5.1

4 Ω loads at VCC = 14 V

Figure 4. Output power vs. supply voltage

Test Condition :

Vcc = 5~14V,

RL = 4 ohm,

Rosc = 39k , Cosc =100nF,

f =1kHz,

Gv = 30dB,

Tamb = 25

Specification Limit:

Typical:

Vs =14V,Rl = 4 ohm

Po = 20W @THD =10%

Po =16W @THD =1%

Supply voltage

Figure 5. THD vs. output power (1 kHz)

THD (%)

Output Power (W)

0.01

0.02

0.05

0.1

0.2

0.5

100m

200m

500m

Test Condition:

Vcc=14V,

RL=4 ohm,

Rosc=39k , Cosc=100nF,

f =1kHz,

Gv=30dB,

Tamb=25

Specification Limit:

Typical:

Po=20W @ THD=10%

TDA7491HV

Characterization curves

DS5624 - Rev 10

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