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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TS4999 датащи(PDF) 28 Page - STMicroelectronics |
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TS4999 датащи(HTML) 28 Page - STMicroelectronics |
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28 / 36 page  Application information TS4999 28/36 4.7 Consumption in shutdown mode Between the shutdown pin and GND there is an internal 300 k Ω (+-/20%) resistor. This resistor forces the TS4999 to be in shutdown mode when the shutdown input is left floating. However, this resistor also introduces additional shutdown power consumption if the shutdown pin voltage is not at 0 V. With a 0.4 V shutdown voltage pin for example, you must add 0.4 V/300 k Ω = 1.3 µA typical (0.4 V/240 k Ω = 1.66 µA in maximum) for each shutdown pin to the standby current specified in Table 8, Table 9 and Table 10. Of course, this current will be provided by the external control device for standby pins. 4.8 Single-ended input configuration It is possible to use the TS4999 in a single-ended input configuration. Input coupling capacitors are also mandatory in this configuration. The schematic diagram in Figure 59 shows a typical single-ended input application. Figure 59. Typical single-ended input application TS4999 Left speaker Right speaker Cin Cin Left Input Cin Cin Right Input Standby C ontrol VCC CsL 1uF Cs 0.1uF Gain Select Control CsR 1uF 3D Effect Control VCC VCC Gain Select Oscillator PWM PWM Gain Select Standby Control Protection Circuit Bridge H Bridge H Lin+ Lin- G0 G1 Rin+ Rin- STBYL STBYR Lout+ A5 A7 E5 E7 E3 A3 D2 E1 C5 C3 B2 A1 Lout- Rout+ Rout- RPVCC PGND AGN D AVCC LPVC C |
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