SC3333
ENERGY METERING IC WITH PULSE OUTPUT
DESCRIPTION
The SC3333 is a high accuracy electrical energy measurement IC
that can provides superior stability and accuracy over extremes in
environmental conditions and over time. The SC3333 does not exhibit
any creep when there is no load.
The SC3333 supplies average real power information on the low
frequency outputs F1 and F2. This logic outputs may be used to
directly drive an electromechanically counter or interface to an MCU.
The CF logic output gives instantaneous real power information. This
output is intended to be used for calibration purposes, or interfacing to
an MCU.
The SC3333 includes a power supply monitoring circuit on the VDD
supply pin. If the supply falls below 4V, the SC3333 will be reset and
time.
The SC3333 provides synchronous frequency output for auto-
reading meter system. The CF logic output is synchronous with the F1
and F2 logic output to ensure the show value of the meter is
consonant with the real value.
F1, F2 will be set to logic high, CF will be set to logic low at the same
ORDERING INFORMATION
Device
SC3333
Package
SOP-16-225-1.27
SOP-16-225-1.27
FEATURES
* Single 5V supply, low power.
* On-chip power supply monitoring.
* On-chip reference with external overdrive capability.
* Supplies average real power on the frequency outputs F1 and F2, which can drive for electromechanical
counters directly.
* The high frequency output CF is intended for calibration and supplies instantaneous real power.
* Less than 0.1% error over a dynamic range of 500 to 1.
* On-chip creep protection (No load threshold).
* The logic output REVP can be used to indicate a potential miswiring or negative power.
* A PGA in the current channel make flexible to select the shunt and burden resistance.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http
:
www.silan.com.cn
REV:1.1
2008.04.29
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