TDA7491P datasheet(13/42 Pages) STMICROELECTRONICS

部件名	TDA7491P

功能描述	2 x 10-watt dual BTL class-D audio amplifier

PDF	42 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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13 / 42 page

TDA7491P

Characterization curves

Doc ID 13540 Rev 6

13/42

Characterization curves

The following characterization curves were made using the TDA7491P demo board. The

LC filter for the 4-

Ω load uses components of 15 µH and 470 nF, whilst that for the 6-Ω load

uses 22 µH and 220 nF and that for the 8-

Ω load uses 33 µH and 220 nF.

4.1

With 4-

Ω load at VCC = 10 V

Figure 3.

Output power vs. supply voltage

Figure 4.

THD vs. output power (1 kHz)

Test Condition :

Vcc = 5~10V,

RL = 4 ohm,

Rosc = 39k

Ω,

Cosc =100nF,

f =1kHz,

Gv = 30dB,

Tamb = 25

℃

Specification Limit:

Typical:

Po = 10W @THD =10%

Po =8W @THD =1%

567

910

Output Power (W)

Supply Voltage (V)

Test Conditions:

Vcc = 10V

Rl = 4 ohm

Rosc = 39k ohm

Cosc = 100nF

f = 1kHz

Gv = 20 dB

Tamb. = 25

˚C

Specification limits:

Typical:

Po = 12W, THD = 10%

THD (%)

Output Power (W)

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