TDA7491LP datasheet(12/37 Pages) STMICROELECTRONICS

部件名	TDA7491LP

功能描述	2 x 5-watt dual BTL class-D audio amplifier

PDF	37 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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12 / 37 page

Characterization curves

TDA7491LP

12/37

Doc ID 13541 Rev 5

Characterization curves

The following characterization curves were made using the TDA7491LP demo board. The

LC filter for the 4-

Ω load uses components of 15 µH and 470 nF and that for the 8-Ω load

uses 33 µH and 220 nF.

4.1

With 4-

Ω load at VCC = 6.6 V

Figure 3.

Output power vs. supply voltage

Figure 4.

THD vs. output power (1 kHz)

THD =1%

THD =10%

Test Condition :

Vcc = 5~6.6V

RL = 4 ohm,

Rosc =39k

Ω, Cosc =100nF,

f =1kHz,

Gv =30dB,

Tamb =25

°C

Specification Limit:

Typical:

Vs =6.6V, Rl = 4 ohm

Po =5W @THD =10%

Po =3.7W @THD =1%

5. 4

5. 8

6. 2

6. 6

Supply voltage (V)

Test Condition:

Vcc =6.6V,

RL= 4 ohm,

Rosc =39k

Ω, Cosc =100nF,

f =1kHz,

Gv =30dB,

Tamb =25

°C

Specification Limit:

Typical:

Po =5W @ THD =10%

Po per Channel (W)

THD(%)

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