Single Phase Bidirectional Power/Energy
Metering IC with Instantaneous Pulse Output
FEATURES
Functionally compatible with the SA9602H with reduced
external components
Bidirectional power and energy measurement
Meets the IEC 521/1036 Specification requirements for
Class 1 AC Watt hour meters
Protected against ESD
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
DESCRIPTION
The SA2002H is an enhancement of the SA9602H, as the
circuit contains the oscillator on chip.
The SA2002H single phase bidirectional power/energy
metering integrated circuit generates a pulse rate output with
a frequency proportional to the power consumption.
The SA2002H 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.
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 SA2002H integrated circuit is available in 8 pin dual inline
(PDIP8) as well as 20 pin and 16 pin small outline (SOIC20,
SOIC16) RoHS compliant package options.
Figure 1: Block diagram
*FMO and DIR not available in PDIP8 package type
VREF
VSS
OSCILLATOR
AND
TIMING
VOLTAGE REFERENCE
AND
CURRENT BIASING
AGND
IVP
IIN
IIP
FOUT
POWER TO
FREQUENCY
DIR
FMO
VDD
POWER
INTEGRATOR
ANALOG SIGNAL
PROCESSING
CURRENT
CHANNEL
ADC
VOLTAGE
CHANNEL
ADC
