TDA7492 STMicroelectronics, TDA7492 Datasheet - Page 24

• Manufacturer Part Number: TDA7492
• Description: IC, AMP, AUDIO, CLASS D, 36POWERSO
• Manufacturer: STMicroelectronics

Specifications of TDA7492

• 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: 40W
• Thd + N: 0.1% @ 1W, 8ohm, VCC=25V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Applications information
6.2
6.3
24/32
Gain setting
The gain of the TDA7492 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 31. Device input circuit and frequency response
0
0
1
1
fc = 1 / (2 * π * Ri * Ci)
31. For Ci = 470 nF the high-pass filter cut-off frequency is below 20 Hz:
GAIN0
Gain settings
Input
signal
Ci
Doc ID 14926 Rev 4
0
1
0
1
Input
pin
Ri
GAIN1
Rf
21.6
27.6
31.1
33.6
Nominal gain, G
v
TDA7492
(dB)