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TS4962 数据表(PDF) 19 Page - STMicroelectronics |
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TS4962 数据表(HTML) 19 Page - STMicroelectronics |
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19 / 44 page  DocID10968 Rev 9 19/44 TS4962 Electrical characteristics 44 3.1 Electrical characteristics curves The graphs shown in this section use the following abbreviations. • RL + 15 µH or 30 µH = pure resistor + very low series resistance inductor • Filter = LC output filter (1 µF + 30 µH for 4 Ω and 0. 5µF + 60 µH for 8 Ω) All measurements are done with CS1 = 1 µF and CS2 = 100 nF (see Figure 2), except for the PSRR where CS1 is removed (see Figure 3). Figure 2. Schematic used for test measurements Figure 3. Schematic used for PSSR measurements In+ In- Rin 150k Rin 150k Cin Cin GND Vcc + Cs1 1uF GND Cs2 100nF GND RL 4 or 8 Ohms 15uH or 30uH or LC Filter 5th order 50kHz low pass filter Audio Measurement Bandwidth < 30kHz Out+ Out- TS4962 In+ In- Rin 150k Rin 150k 4.7uF 4.7uF GND Cs2 100nF GND RL 4 or 8 Ohms 15uH or 30uH or LC Filter 5th order 50kHz low pass filter RMS Selective Measurement Bandwidth=1% of Fmeas Out+ Out- TS4962 GND 5th order 50kHz low pass filter Reference 20Hz to 20kHz Vcc GND |
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