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SA4106ASAR Datasheet(PDF) 1 Page - Sames |
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SA4106ASAR Datasheet(HTML) 1 Page - Sames |
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1 / 18 page  Single Channel Single Phase Energy Metering IC SPEC-1587 (REV. 5) 1/18 29-09-2017 SA4106A FEATURES Meets the IEC62053, CBIP-88 and IS137799-1999 specification requirements for Class 1 AC static watt- hour meters for active energy Motor drive outputs (MOP, MON) provide average active power information and can drive an electro-mechanical counter or an impulse counter directly LED pulse output for calibration purposes supplies average active power information Configurable for different meter ratings Unidirectional or bidirectional power and energy measurement Precision on-chip oscillator (70ppm/°C drift) Precision on-chip voltage reference (10ppm/°C drift) Selectable on-chip anti-creep function (0.01% of FMAX, 0.004% of FMAX, disabled) Anti-creep state indicator pin Low power consumption (<20mW typical) Measures AC inputs only DESCRIPTION The SA4106A is an accurate single phase power/energy metering integrated circuit providing a single chip solution for single phase energy meters. Very few external components are required and the chip includes a direct drive capability for electro-mechanical counters. The SA4106A does not require an external crystal or voltage reference. A precision oscillator and a precision voltage reference to supply the circuitry with a stable frequency and stable reference currents are integrated on the chip. The SA4106A metering integrated circuit generates a pulse output, the frequency of which is proportional to the active power consumption. Programmable inputs allow the meter manufacturer to configure the SA4106A for different meter maximum currents (IMAX) and nominal voltages (VNOM) without having to change the stepper motor counter or impulse counter gear ratio. The LED pulse output follows the average active power consumption measured and is intended for meter calibration purposes. In fast calibration mode this output provides a high frequency pulse rate following the average active power consumption and can be used for fast calibration or to interface with a microcontroller. The SA4106A includes an anti-creep feature preventing any creep effects in the meter under no-load conditions. The anti- creep threshold can be set to 0.01% or 0.004% of FMAX. The anti-creep function can also be disabled. The SA4106A integrated circuit is available in a 20 pin small outline (SOIC20) RoHS compliant package. Figure 1: Block diagram VREF VSS MON MOP COUNTER DRIVE BUFFERS DIVISION FOR COUNTER OUTPUT OSCILLATOR AND TIMING VOLTAGE REFERENCE AND CURRENT BIASING VOLTAGE CHANNEL ADC CURRENT CHANNEL ADC AGND IVP IIN IIP VDD POWER ON RESET DIGITAL OUTPUT DIGITAL OUTPUT Instantaneous power SIGNAL PROCESSING Average power ACSEL DIRI DIRO DIVISION FOR CALIBRATION LED OUTPUT LED R0 R1 R2 R3 FMS PIN STATE DETECTION PULSE GENERATION ACST LPF |
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