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TS4974IQT Datasheet(PDF) 5 Page - STMicroelectronics |
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TS4974IQT Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 8 page Electrical Characteristics TS4974 5/8 Table 4: V CC = +3.3V, GND = 0V, Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit ICC Supply Current No input signal, no load 3.0 mA ISTANDBY Standby Current No input signal, Vstdby = Gnd, RL = 8 Ω 230 2000 nA Voo Output Offset Voltage No input signal, RL = 8 Ω, Floating inputs 520 mV Po Output Power THD = 1% Max, f = 1kHz, RL = 8 Ω 300 380 mW THD + N Total Harmonic Distortion + Noise Po = 250mW rms, 20Hz < F < 20kHz, RL = 8 Ω, 0dB gain, Cb=1µF, Cin=330nF 0.5 % PSRR Power Supply Rejection Ratio1 F = 217Hz, RL = 8 Ω, ) Vripple = 200mVpp, Input Grounded, Cb=1µF, Cin=330nF 75 85 dB CMRR Common Mode Rejection Ratio2 F = 217Hz, RL = 8 Ω, Vincm = 200mVpp, Cb = 1µF, Cin=330nF 45 61 dB SNR Signal-to-Noise Ratio ( Weighted A, 6dB gain ) ( RL = 8 Ω, THD + N ≤ 0.5%, 20Hz < F < 20kHz) 100 dB Gs Start up Gain -12 dB G Digital Gain Range -33 +12 dB Gain Step size 3dB Gain accu- racy -1 +1 dB Twu Wake-up Time 15 ms VN Output Voltage Noise F = 20Hz to 20kHz, RL = 8 Ω Unweighted Weighted A 21 17 µV RMS Zin Differential input impedance 48 60 75 k Ω Tdebounce Debouncing time 10 ms Tautorepeat time between volume change 160 ms Trange During autorepeat mode, necessary time to cover the whole gain range 2500 ms 1) Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to Vcc @ F = 217Hz. 2) Dynamic measurements - 20*log(rms(Vout)/rms(Vincm)). |
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