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TS4985EIJT Folha de dados(PDF) 2 Page - STMicroelectronics |
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TS4985EIJT Folha de dados(HTML) 2 Page - STMicroelectronics |
2 / 29 page Typical Application Schematic TS4985 2/29 1 Typical Application Schematic Figure 1 shows a typical application schematic for the TS4985. Table 1. External component descriptions Figure 1. Application schematic Components Functional Description RIN L,R Inverting input resistors which sets the closed loop gain in conjunction with Rfeed. These resistors also form a high pass filter with CIN (fc = 1 / (2 x Pi x RIN x CIN)) CIN L,R Input coupling capacitors which blocks the DC voltage at the amplifier input terminal RFEED L,R Feedback resistors which sets the closed loop gain in conjunction with RIN CS Supply Bypass capacitor which provides power supply filtering CB Bypass pin capacitor which provides half supply filtering AV L, R Closed loop gain in BTL configuration = 2 x (RFEED / RIN) on each channel VCC Cs 1u 1 2 3 VCC Rin-L Cin-L Input L GND Rin-R Cin-R Input R GND Cfeed-L Rfeed-L Cfeed-R Rfeed-R Cb 1u Neg. Output L Pos. Output L Neg. Output R Pos. Output R 22k 22k 22k 22k 100n 100n Bias AV = -1 Bypass Standby L + - + - AV = -1 + - + - VO-L VO+L VO-R VO+R IN-L IN+L IN+R IN-R Standby R A1 B2 C5 C3 D6 E5 C1 E1 D2 D4 E3 B4 A3 B6 A5 TS4985 1 2 3 VCC |
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