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TS4974IQT Fiches technique(PDF) 4 Page - STMicroelectronics |
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TS4974IQT Fiches technique(HTML) 4 Page - STMicroelectronics |
4 / 25 page Typical application schematics TS4974 4/25 2 Typical application schematics Figure 1. Typical application schematics for the TS4974 Table 3. External component descriptions Components Functional description Rpu1, Rpu2 Rpd1, Rpd2 Pair of pull-up (Rpu1, Rpu2) or pull down (Rpd1, Rpd2) resistors that are connected to the digital volume control pins UP/DVC and DOWN/DVC. See Section 4.9: Volume setting on page 20. CIN Input coupling capacitors that block the DC voltage at the amplifier input terminal. They form together with the amplifier’s differential input impedance ZIN a first order high pass filter with a -3dB cut-off frequency (fcut-off = 1 / (2 x π x ZIN x CIN)). See Section 4.2: Low frequency response on page 16. CS Supply bypass capacitor that provides power supply filtering. See Section 4.4: Decoupling of the circuit on page 19. CB Bypass pin capacitor that provides half supply filtering. See Section 4.4: Decoupling of the circuit on page 19. Cin1 330nF Cin2 330nF P1 Vin- P2 Vin+ Cb 1µF S1 Volume DOWN S2 Volume UP VCC Cs 1µF STBY control Speaker 8 Ohms 470k Rpd1 470k Rpd1 470k Rpu1 470k Rpu2 VCC VCC DIGITAL VOLUME CONTROL BIAS STBY + 1 2 3 9 8 Vin- Vin+ BYP ASS STBY Vout- Vout+ U1 TS4974 DFN10 |
Numéro de pièce similaire - TS4974IQT |
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Description similaire - TS4974IQT |
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