SA9102C Datasheet, PDF (7/12 Pages) Sames – SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC PULSE OUTPUT

SA9102C
The formula for calculating the output frequency (f) is given below:
f = 11.16 _* FOUTX _*
FOSC
I .I
*^{I V}
3.58MHz
I²
R
Where FOUTX = Nominall rated frequency (4Hz or 1160Hz)
FOSC = Oscillator frequency (2MHz ...... 4MHz)
I_I
= Input currents for current input (16µA at rated)
I_V
= Input current for voltage input (14µA at rated)
I_R
= Reference current (typically 50µA)
XTAL is a colour burst TV crystal (f = 3.5795MHz) for the oscillator. The oscillator
frequency is divided down to 1.7897MHz on-chip to supply the digital circuitry and the
A/D converters.
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