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TS4994 データシート(PDF) 24 Page - STMicroelectronics |
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TS4994 データシート(HTML) 24 Page - STMicroelectronics |
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24 / 35 page  Application information TS4994 24/35 The three following graphs show PSRR versus frequency and versus bypass capacitor Cb in worst-case conditions ( ΔR = 0.1%). Figure 70. PSRR vs. frequency (worst case conditions) Figure 71. PSRR vs. frequency (worst case conditions) Figure 72. PSRR vs. frequency (worst case conditions) 100 1000 10000 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 Cb=0.1 μF Cb=1 μF Cb=0 20k 20 Cb=0.47 μF Vcc = 5V, Vripple = 200mVpp Av = 1, Cin = 4.7 μF ΔR/R = 0.1%, RL ≥ 8Ω Tamb = 25 °C, Inputs = Grounded Frequency (Hz) 100 1000 10000 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 Cb=0.1 μF Cb=1 μF Cb=0 20k 20 Cb=0.47 μF Vcc = 3.3V, Vripple = 200mVpp Av = 1, Cin = 4.7 μF ΔR/R = 0.1%, RL ≥ 8Ω Tamb = 25 °C, Inputs = Grounded Frequency (Hz) 100 1000 10000 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 Cb=0.1 μF Cb=1 μF Cb=0 20k 20 Cb=0.47 μF Vcc = 2.5V, Vripple = 200mVpp Av = 1, Cin = 4.7 μF ΔR/R = 0.1%, RL ≥ 8Ω Tamb = 25 °C, Inputs = Grounded Frequency (Hz) |
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