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STPM10 数据表(PDF) 9 Page - STMicroelectronics |
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STPM10 数据表(HTML) 9 Page - STMicroelectronics |
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9 / 51 page ![]() STPM10 Electrical characteristics Doc ID 17728 Rev 3 9/51 4 Electrical characteristics VCC = 5 V, TA = 25 °C,100 nF to 1 µF between VDDA and VSS, 100 nF to 1 µF between VDDD and VSS, 100 nF to 1 µF between VCC and VSS unless otherwise specified. Table 5. Electrical characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit Energy measurement accuracy fBW Effective bandwidth Limited by digital filtering (-3 dB) 4 800 Hz eAW Accuracy of active power Over 1 to 1000 of dynamic range 0.1 % eRW Accuracy of reactive power Over 1 to 1000 of dynamic range 0.1 % eSW Accuracy of apparent power Over 1 to 500 of dynamic range 0.1 % SNR Signal-to-noise ratio Over the entire bandwidth 52 db PSRRDC Power supply DC rejection Voltage signal: 200 mVrms/50Hz Current signal: 10 mVrms/50Hz fCLK= 4.194 MHz VCC=3.3V±10%, 5V±10% 0.2 % PSRRAC Power supply AC rejection Voltage signal: 200 mVrms/50 Hz Current signal: 10 mVrms/50 Hz fCLK= 4.194 MHz VCC=3.3 V+0.2 Vrms1@100 Hz VCC=5.0 V+0.2 Vrms1@100 Hz 0.1 % General section VCC Operating supply voltage 3.165 5.5 V ICC Supply current. Configuration registers cleared 4 MHz; VCC=5 V 3 4 mA 8 MHz; VCC=5 V 5 6 mA POR Power on reset on VCC 2.5 V VDDA Analog supply voltage 2.85 3.00 3.15 V VDDD Digital supply Voltage 1.725 1.80 1.875 V fCLK Oscillator clock frequency MDIV bit=0 4.000 4.194 MHz MDIV bit=1 8.000 8.192 MHz fLINE Nominal line frequency 45 65 Hz ILATCH Current injection latch-up immunity 300 mA Analog inputs (IIP1, IIN1, IIP2, IIN2, VIP, VIN) VMAX Maximum input signal levels Voltage channel -0.3 +0.3 V Current channels: Gain 8X -0.15 +0.15 V Gain 32X -0.035 +0.035 fADC A/D converter bandwidth 10 kHz fSPL A/D sampling frequency FCLK/4 Hz |
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