TDA7492P STMicroelectronics, TDA7492P Datasheet - Page 19

• Manufacturer Part Number: TDA7492P
• Description: IC, AMP, AUDIO, CLASS D, 36POWERSO
• Manufacturer: STMicroelectronics

Specifications of TDA7492P

• Amplifier Class: D
• No. Of Channels: 2
• Supply Voltage Range: 8V To 26V
• Load Impedance: 8ohm
• Operating Temperature Range: 0°C To +70°C
• Amplifier Case Style: PowerSO
• No. Of Pins: 36
• Svhc: No SVHC
• Output Power: 25W
• Thd + N: 0.1% @ 1W, 8ohm, VCC=20V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7492P
6.2
6.3
Gain setting
The gain of the TDA7492P is set by the two inputs, GAIN0 (pin 30) and GAIN1 (pin31).
Internally, the gain is set by changing the feedback resistors of the amplifier.
Table 7.
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. Device input circuit and frequency response
0
0
1
1
fc = 1 / (2 * π * Ri * Ci)
23. For Ci = 470 nF the high-pass filter cut-off frequency is below 20 Hz:
GAIN0
Gain settings
Input
signal
Ci
Doc ID 15068 Rev 3
0
1
0
1
Input
pin
GAIN1
Ri
Rf
21.6
27.6
31.1
33.6
Applications information
Nominal gain, G
v
(dB)
19/26