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SA2002PPA Datasheet(PDF) 1 Page - Sames |
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SA2002PPA Datasheet(HTML) 1 Page - Sames |
1 / 14 page FEATURES + + + + + + + Provides a single chip solution for energy meters with a mechanical display No external crystal or resonator required Precision on chip oscillator (<60ppm/°C drift) Direct stepper motor/impulse counter drive Calibration and setup stored on external EEPROM - no trimpots required Flexible programmable features Unidirectional and bi-directional power and energy measurement sames Programmable Single Phase Kilowatt-hour Energy IC for Mechanical Counter Application SA2002P 1/14 SPEC-0087 (REV. 5) 05-09-02 + + + + + + + + Can measure AC or DC energy. Meets the IEC 61036 Specification for Class 1 AC Watt hour meters Less than 1% error over a dynamic range of 1:1000 Protected against ESD Total power consumption rating below 30mW Adaptable to different types of sensors Operates over a wide temperature range Precision voltage reference on-chip (<100ppm/°C drift) DESCRIPTION The SAMES SA2002P provides a single chip solution for single phase mechanical counter based energy meters. A precision oscillator, that replaces an external crystal is integrated on chip. The SA2002P does not require any external trim-pots. All required calibration and configuration data is read from a small external EEPROM. The data stored in the EEPROM consists of direction mode (unidirectional or bidirectional), calibration data, meter rated conditions, LED pulse rate, counter pulse width, counter resolution and creep threshold. A programmable high frequency pulse output is available on the LED output for meter calibration purposes. The SA2002P single phase kWh metering integrated circuit generates a pulse rate with a frequency proportional to the power consumption. The SA2002P performs active power measurement and takes the power factor into account. The SA2002P integrated circuit is available in 16 pin dual-in- line plastic (PDIP16) and small outline (SOIC16) package types. Figure 1: Block diagram IIP IIN IVP GND VREF DR-01607 POWER TO PULSE RATE DIRO V DD V SS POWER INTEGRATOR ANALOG SIGNAL PROCESSING TIMING OSC VOLTAGE REF. IIC BUS INTERFACE LED MOP MON RLOAD TEST SCL SDA FMO |
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