90E21 Datasheet, PDF (52/57 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
Table-14 Zero-Crossing Specification
Symbol
T_ZX
T_D
Description
High Level Width
Delay Time
6.5 VOLTAGE SAG TIMING
Min.
Typical
5
V
Voltage Sag
Threshold
Voltage Sag
Threshold
T_D
WarnOut
IRQ
Figure-14 Voltage Sag Timing Diagram
Table-15 Voltage Sag Specification
Symbol
T_D
Delay Time
Description
6.6 PULSE OUTPUT
Tp=80ms
CFx
T≥160ms
Min.
Typical
Tp=0.5T
10ms≤T<160ms
Figure-15 Output Pulse Width
Max.
Unit
ms
0.5
ms
Max.
Unit
0.5
ms
Tp=5ms
if T<10ms,
force T=10ms
Electrical Specification
52
January 10, 2012