TDA7498 STMicroelectronics, TDA7498 Datasheet - Page 22

• Manufacturer Part Number: TDA7498
• Description: Audio Amplifiers 100W +100W Dual BTL Class-D 4-Select dB
• Manufacturer: STMicroelectronics

Specifications of TDA7498

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Applications information
5.4
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Input resistance and capacitance
The input impedance is set by an internal resistor Ri = 60 kΩ (typical). An input capacitor
(Ci) is required to couple the AC input signal.
The equivalent circuit and frequency response of the input components are shown in
Figure
Figure 23. Input circuit and frequency response
f
C
23. For Ci = 470 nF the high-pass filter cut-off frequency is below 20 Hz:
= 1 / (2 * π * Ri * Ci)
Input
signal
Ci
Doc ID 16107 Rev 4
Input
pin
Ri
Rf
TDA7498