TDA7491P13TR STMicroelectronics, TDA7491P13TR Datasheet - Page 36

• Manufacturer Part Number: TDA7491P13TR
• Description: AMP, AUDIO, DUAL, CLASS D, 36PSSOEPD
• Manufacturer: STMicroelectronics

Specifications of TDA7491P13TR

• Amplifier Class: D
• No. Of Channels: 2
• Output Power: 9.5W
• Supply Voltage Range: 5V To 18V
• Thd + N: 0.1% @ 1W, 6ohm, VCC=11V
• Load Impedance: 6ohm
• Operating Temperature Range: 0°C To +70°C
• Rohs Compliant: Yes

Applications information
7.6
36/40
Output low-pass filter
To avoid EMI problems, it may be necessary to use a low-pass filter before the speaker. The
cutoff frequency should be larger than 22 kHz and much lower than the output switching
frequency. It is necessary to choose the L-C component values depending on the loud
speaker impedance. Some typical values, which give a cut-off frequency of 27 kHz, are
shown in
Figure 55. Typical LC filter for a 8-Ω speaker
Figure 56. Typical LC filter for a 4-Ω speaker
Figure 55
and
Figure 56
Doc ID 13540 Rev 4
below.
TDA7491P