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参数资料
| 型号： | TDA7492P13TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| 封装： | ROHS COMPLIANT, SSOP-36 |
| 文件页数： | 11/26页 |
| 文件大小： | 508K |
| 代理商： | TDA7492P13TR |
TDA7492P
Applications information
Doc ID 15068 Rev 3
19/26
6.2
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.
6.3
Input resistance and capacitance
The input impedance is set by an internal resistor Ri = 60 k
(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 23. For Ci = 470 nF the high-pass filter cut-off frequency is below 20 Hz:
fc = 1 / (2 *
π * Ri * Ci)
Figure 23.
Device input circuit and frequency response
Table 7.
Gain settings
GAIN0
GAIN1
Nominal gain, Gv (dB)
0021.6
0127.6
1031.1
1133.6
Ri
Input
Ci
Rf
Input
pin
signal
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