TDA7491HV13TR STMicroelectronics, TDA7491HV13TR Datasheet - Page 37

• Manufacturer Part Number: TDA7491HV13TR
• Description: IC AMP AUD CLASS D BTL PWRSSO36
• Manufacturer: STMicroelectronics
• Type: Class Dr

Specifications of TDA7491HV13TR

• Output Type: 2-Channel
• Max Output Power X Channels @ Load: 20W x 2 @ 8 Ohm
• Voltage - Supply: 5 V ~ 18 V
• Features: Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Surface Mount
• Package / Case: *
• Amplifier Class: D
• No. Of Channels: 2
• Output Power: 20W
• Supply Voltage Range: 5V To 18V
• Thd + N: 0.1% @ 1W, 8ohm, VCC=18V
• Load Impedance: 8ohm
• Operating Temperature Range: 0°C To +70°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-11055-2

TDA7491HV
7.6
Reconstruction low-pass filter
Standard applications use a low-pass filter before the speaker. The cut-off frequency should
be higher 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 57
Figure 56. Typical LC filter for a 8-Ω speaker
Figure 57. Typical LC filter for a 4-Ω speaker
below.
Doc ID 14242 Rev 5
Application information
Figure 56
and
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