Single Phase Uni-directional Power / Energy
Metering IC with Instantaneous Pulse Output
SA2002E
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FEATURES
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Functionally compatible with the SA9602E with reduced
external components
sames
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Total power consumption rating below 25mW
Adaptable to different types of current sensors
Operates over a wide temperature range
Precision voltage reference on-chip
Precision oscillator on-chip
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Uni-directional power and energy measurement
Meets the IEC 521/1036 Specification requirements for
Class 1 AC Watt hour meters
Protected against ESD
DESCRIPTION
The SAMES SA2002E is an enhancement of the SA9602E, as
the circuit contains the oscillator on chip.
The SAMES SA2002E single phase uni-directional
power/energy metering integrated circuit generates a pulse
rate output with a frequency proportional to the power
consumption.
The SA2002E performs a calculation for active power. The
method of calculation takes the power factor into account.
Energy consumption can be determined by the power
measurement being integrated over time.
V
DD
V
SS
This innovative universal single-phase power/energy metering
integrated circuit is ideally suited for energy calculations in
applications such as residential municipal metering and factory
energy metering and control.
The SA2002E integrated circuit is available in 8, 14 and 20 pin
dual-in-line plastic (PDIP) as well as 16 and 20 pin small outline
(SOIC) package types.
IIP
POWER
IIN
INTEGRATOR
ANALOG
SIGNAL
PROCESSING
VOLTAGE
REF.
IVP
GND
OSC
TIMING
TO
FREQUENCY
POWER
FOUT
DR-01586
VREF
Figure 1: Block diagram
SA2002E (REV. 7)
1/10
17-03-02
SAMES [ SAMES ]
