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TS4990JT Folha de dados(PDF) 4 Page - STMicroelectronics |
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TS4990JT Folha de dados(HTML) 4 Page - STMicroelectronics |
4 / 6 page TS4990 4/6 ELECTRICAL CHARACTERISTICS V CC = 2.6V, GND = 0V, Tamb = 25°C (unless otherwise specified) REMARKS 1. All measurements, except PSRR measurements, are made with a supply bypass capacitor Cs = 1µF. 2. The standby response time is about 1µs. Symbol Parameter Min. Typ. Max. Unit ICC Supply Current No input signal, no load 4 6 mA ISTANDBY Standby Current 1) No input signal, Vstdby = GND, RL = 8Ω 1. Standby mode is actived when Vstdby is tied to Vcc 10 1000 nA Voo Output Offset Voltage No input signal, RL = 8 Ω 520 mV Po Output Power THD = 1% Max, f = 1kHz, RL = 8 Ω 210 260 mW THD + N Total Harmonic Distortion + Noise Po = 200mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8 Ω 0.15 % PSRR Power Supply Rejection Ratio2) RL = 8 Ω, Gv = 2, Vripple = 200mVpp, Input Grounded F = 217Hz F = 1kHz 2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc. 55 55 62 66 dB TWU Wake-Up Time 130 TBD ms Components Functional Description Rin Inverting input resistor which sets the closed loop gain in conjunction with Rfeed. This resistor also form a high pass filter with Cin (fc = 1 / (2 x Pi x Rin x Cin)) Cin Input coupling capacitor which blocks the DC voltage at the amplifier input terminal Rfeed Feed back resistor 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 Cfeed Low pass filter capacitor allowing to cut the high frequency (low pass filter cut-off frequency 1 / (2 x Pi x Rfeed x Cfeed)) Gv Closed loop gain in BTL configuration = 2 x (Rfeed / Rin) |
Nº de peça semelhante - TS4990JT |
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Descrição semelhante - TS4990JT |
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