90E32 Datasheet, PDF (8/71 Pages) Integrated Device Technology – Poly-Phase High-Performance Wide-Span Energy Metering IC

90E32
BLOCK DIAGRAM
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
OSCI
OSCO
RESET
PM1
PM0
I1P / I1N
I2P / I2N
I3P / I3N
V1P / V1N
V2P / V2N
V3P / V3N
Vref
Power On Reset
Power Mode
Configuration
Current Detector
ADC-I1
ADC-I2
ADC-I3
ADC-V1
ADC-V2
ADC-V3
Temperature Sensor
Reference Voltage
VDD18 Regulator
Crystal Oscillator
Energy Metering
(Forward/Reverse
Active/Reactive/CF Generator)
CF Out
DSP
Zero
Measure and Monitoring
Crossing
(V/I/rms / SAG / Phase /
Frequency)
Warn
Out
IRQ
Control Logic
SPI Interface
CF1
CF2
CF3
CF4
ZX0
ZX1
ZX2
WarnOut
IRQ0
IRQ1
CS
SCLK
SDO
SDI
Figure-1 90E32 Block Diagram
Block Diagram
8
December 9, 2011