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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TS4998 датащи(PDF) 3 Page - STMicroelectronics |
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TS4998 датащи(HTML) 3 Page - STMicroelectronics |
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3 / 33 page  TS4998 Typical application schematics 3/33 1 Typical application schematics Figure 1 shows a typical application for the TS4998 with a gain of +6dB set by the input resistors. Figure 1. Typical application schematics Table 1. External component descriptions Components Functional description RIN Input resistors that set the closed loop gain in conjunction with a fixed internal feedback resistor (Gain = Rfeed/RIN, where Rfeed = 50kΩ). CIN Input coupling capacitors that block the DC voltage at the amplifier input terminal. Thanks to common mode feedback, these input capacitors are optional. However, if they are added, they form with RIN a 1st order high pass filter with -3dB cut-off frequency (fcut-off = 1 / (2 x π x RIN x CIN)). CS Supply bypass capacitors that provides power supply filtering. CB Bypass pin capacitor that provides half supply filtering. Cin1 330nF Cb 1uF Cs 1uF Rin1 25k Rin2 25k Rin3 25k Rin4 25k Cin2 330nF Cin3 330nF Cin4 330nF VCC Left Speaker 8 Ohms Right Speaker 8 Ohms P1 Diff. input L- P2 Diff. input L+ P3 Diff. input R- P4 Diff. input R+ Optional 1 2 4 3 14 12 11 9 10 BIAS STBY LEFT RIGHT LIN- RIN- LIN+ RIN+ Bypass GND GND LOUT- LOUT+ ROUT- ROUT+ - + + - Vcc TS4998 U1 TS4998 - QFN16 |
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