TDA7491LP View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7491LP

2 x 5-watt dual BTL class-D audio amplifier

STMicroelectronics 

Characterization curves

4

Characterization curves

TDA7491LP

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

Test Condition :

Vcc = 5~6.6V

RL = 4 ohm,

Rosc =39kΩ, 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%

6

5

4

3

2

1

0

5

5. 4

5. 8

6. 2

Supply voltage (V)

THD =10%

THD =1%

6. 6

Figure 4. THD vs. output power (1 kHz)

THD(%)

Test Condition:

Vcc =6.6V,

RL= 4 ohm,

Rosc =39kΩ, Cosc =100nF,

f =1kHz,

Gv =30dB,

Tamb =25°C

Specification Limit:

Typical:

Po =5W @ THD =10%

12/37

Po per Channel (W)

Doc ID 13541 Rev 5

Share Link: