Datasheet

90E36A POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Electrical Specification 61 April 2, 2013
7 ELECTRICAL SPECIFICATION
7.1 ELECTRICAL SPECIFICATION
Parameter Min Typ Max Unit Test Condition/ Comments
Accuracy
DC Power Supply Rejection Ratio (PSRR) ±0.1 %
VDD=3.3V±0.3V, I=5A, V=220V, CT 1000:1, sampling
resistor 4.8Ω
AC Power Supply Rejection Ratio (PSRR) ±0.1 %
VDD=3.3V superimposes 400mVrms, I=5A, V=220V,
CT 1000:1, sampling resistor 4.8Ω
Active Energy Error (Dynamic Range 6000:1) ±0.1 %
CT 1000:1, sampling resistor 4.8Ω
ADC Channel
Differential Input Voltage
0.12
0.07
0.04
720
360
180
mVrms
PGA=1
PGA=2
PGA=4
Analog Input Pin Absolute Voltage Range GND-300
VDD-
1200
mV
Channel Input Impedance
120
80
50
KΩ
PGA=1
PGA=2
PGA=4
Channel Sampling Frequency 8 kHz
Channel Sampling Bandwidth 2 kHz
Temperature Sensor and Reference
Temperature Sensor Accuracy 1 °C
Reference voltage 1.2 3.3 V, 25 °C
Reference voltage temperature coefficient 6 15
ppm/
°C
From -40 to 85 °C
Current detectors
Current Detector threshold range 2 3 4 mVrms 3.3 V, 25 °C
Current Detector threshold setting step/ resolution 0.096 mVrms 3.3 V, 25 °C
Current Detector detection time (single-side) 32 ms
Current Detector detection time (double-side) 17 ms
Crystal Oscillator
Oscillator Frequency (
f
sys_clk
)
16.384 MHz
The Accuracy of crystal or external clock is ±20 ppm,
10pF ~ 20pF crystal load capacitor integrated.
Power Supply
AVDD 2.8 3.3 3.6
DVDD 2.8 3.3 3.6
VDD18 1.8 V
Operating Currents
Normal mode operating current (I-Normal) 23 mA 3.3 V, 25 °C
Normal mode operating current with DFT engine on
(I-Normal + DFT)
23.5 mA 3.3 V, 25 °C
Idle mode operating current (I-Idle) 0.1 4 μA
Detection mode operating current (I-Detection)
180
100
250
140
μA
Double-side detection (at 3.3 V, 25 °C)
Single-side detection (at 3.3 V, 25 °C)
Partial Measurement mode operating current
(I-Measurement)
6.8 mA 3.3 V, 25°C
SPI
Slave mode (SPI) bit rate 100
1200k
note 1
bps
Master mode (DMA) bit rate 1800k bps
ESD
Machine Model (MM) 400 V
JESD22-A115
Charged Device Model (CDM) 1000 V
JESD22-C101
Human Body Model (HBM) 6000 V
JESD22-A114
Latch Up ±100 mA
JESD78A
Latch Up 5.4 V
JESD78A