90E21 Datasheet, PDF (48/57 Pages) Integrated Device Technology – Single-Phase High-Performance Wide-Span Energy Metering IC

90E21/22/23/24
SINGLE-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
6
ELECTRICAL SPECIFICATION
6.1 ELECTRICAL SPECIFICATION
Parameters and Description
DC Power Supply Rejection Ratio (PSRR)
AC Power Supply Rejection Ratio (PSRR)
Active Energy Error (Dynamic Range 5000:1)
Sampling Frequency
L Line Current Channel Equivalent Input Noise
N Line Current Channel Equivalent Input Noise
Voltage Channel Equivalent Input Noise
Total Harmonic Distortion for Each Channel
Reactive Energy Metering Bandwidth
Active Energy Metering Bandwidth
Irms and Vrms Measurement Bandwidth
Measurement Error
L Line Current Channel Differential Input
N Line Current Channel Differential Input
Voltage Channel Differential Input
L Line Current Channel Input Impedance
N Line Current Channel Input Impedance
Voltage Channel Input Impedance
L Line Current Channel DC Offset
N Line Current Channel DC Offset
Voltage Channel DC Offset
On-Chip Reference (90E21/22/23/24)
Reference Voltage Temperature Coefficient
Crystal or External Clock
SPI Interface Bit Rate
CFx Pulse Width
Machine Model (MM)
Charged Device Model (CDM)
Min. Typical
Max.
Unit
Accuracy
±0.1
%
±0.1
%
±0.1
%
Channel Characteristics
8
kHz
80
5µ
7.5µ
15µ
30µ
120µ
30µ
60µ
120µ
120µ
1.398
200
19.1
458.4
458.4
4
4
4
±0.5
Analog Input
25m
37.5m
75m
150m
600m
150m
300m
600m
600m
1
50
50
10
10
10
Reference
1.417
1.440
±15
±40
Clock
8.192
SPI Interface
160k
Pulse Width
nV/ Hz
nV/ Hz
nV/ Hz
dB
kHz
kHz
kHz
%
Vrms
Vrms
Vrms
KΩ
KΩ
KΩ
mV
mV
mV
V
ppm/°C
MHz
bps
80
ms
ESD
400
V
1000
V
Test Conditions and Comments
VDD=3.3V±0.3V, 100Hz, I=5A, V=220V, L line
shunt resistor 150µΩ, N line CT 1000:1, sampling
resistor 4.8Ω
VDD=3.3V superimposes 400mVrms, 100Hz Sinu-
soidal signal, I=5A, V=220V, L line shunt resistor
150µΩ, N line CT 1000:1, sampling resistor 4.8Ω
L line current gain is ‘24’; N line current gain is ‘1’
Single side band noise (measured at 50Hz, and
PGA gain is ‘24’)
Single side band noise (measured at 50Hz, and
PGA gain is ‘1’)
Single side band noise (measured at 50Hz, and
PGA gain is ‘1’)
25°C, PGA gain is ‘1’, 500mVrms input
PGA gain is ‘24’
PGA gain is ‘16’
PGA gain is ‘8’
PGA gain is ‘4’
PGA gain is ‘1’
PGA gain is ‘4’
PGA gain is ‘2’
PGA gain is ‘1’
PGA gain is ‘1’
PGA gain is ‘24’
PGA gain is ‘1’
PGA gain is ‘1’
Reference voltage test mode
The Accuracy of crystal or external clock is ±100
ppm
If T ≥ 160 ms, width=80ms; if T<160 ms, width =
0.5T. Refer to Section 6.6
JESD22-A115
JESD22-C101
Electrical Specification
48
January 10, 2012