ADSST-EM-2030*

·3-Phase, 4-Wire Metering IC
·High Accuracy Support for 50 Hz/60 Hz, IEC1036
·Design Accuracy:
     0.5% over 5% of Ib to 6% of Ib
     0.65% over 2% of Ib to 5% of Ib
·Measures:
     kWh
     kW
     rms Voltage of Each Phase
     rms Current of Each Phase
·Phase and Nonlinearity Compensation for CTs
·Potentiometer-Free Design
·SPI Communication for:
     Data to Microcontroller
     Calibration
·Programmable E-Pulse
·Drive for:
     Electromechanical Counter
     2-Phase Stepper Motor Counter
·Low Power (50 mW Typ)

It  is a highly accurate and low cost phase energy measurement IC intended to be used in 3-phase, 4-wire systems. When used with an op amp and a multiplexer, the ADSST-EM-2030 surpasses the accuracy requirement of the IEC1036 standard.

It  is a MicroConverter^® consisting of a microcontroller, 6-channel, 12-bit ADC, SPI port, program memory and Flash for storage of constants. The only analog circuitry used in ADSST-EM-2030 is the ADC. All other signal processing is carried out in digital domain. This provides superior accuracy over extreme environmental conditions and time.

ADSST-EM-2030 can drive an electromechanical counter or a 2-phase stepper motor counter, or can be interfaced to a microcontroller to build a feature-rich meter with LCD, maximum demand, time of use, and communication. Ratio, phase, and nonlinearity errors of the CTs are compensated for by using software. This reduces the cost of CTs and reduces calibration time caused by unreliable potentiometers.

Because the ADSST-EM-2030 is a low power device, it can be powered by a simple R-C power supply, reducing the cost of operation.

ADSST-EM-2030 supplies average real power information on the low frequency outputs F1 and F2. These logic outputs can be used to drive an electromechanical counter. The CF logic pin gives the instantaneous real power information. This output is intended to be used for calibration.

ADSST-EM-2030 is available in a 28-lead SSOP package.