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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) 27 Page - STMicroelectronics |
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TS4998 датащи(HTML) 27 Page - STMicroelectronics |
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27 / 33 page  TS4998 Application information 27/33 external input capacitors CIN, some noise might remain at startup. To eliminate the effect of mismatched components, the TS4998 includes pop reduction circuitry. With this circuitry, the TS4998 is close to zero pop for all possible common applications. In addition, when the TS4998 is in standby mode, due to the high impedance output stage in this configuration, no pop is heard. 4.12 Single-ended input configuration It is possible to use the TS4998 in a single-ended input configuration. However, input coupling capacitors are needed in this configuration. The schematic diagram in Figure 67 shows an example of this configuration for a gain of +6dB set by the input resistors. Figure 67. Typical single-ended input application The component calculations remain the same for the gain. In single-ended input configuration, the formula is: with RIN expressed in kΩ. Cin1 330nF Cb 1uF Cs 1uF Cin2 330nF Cin3 330nF Cin4 330nF VCC Left Speaker 8 Ohms Right Speaker 8 Ohms P1 Diff. input L- P2 Diff. input R- Rin1 25k Rin2 25k Rin3 25k Rin4 25k 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 Av SE = V O+ V O- – V e -------------------------- R feed R IN -------------- 50k Ω R IN -------------- == |
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