90E21 datasheet(49/57 Pages) IDT

49 / 57 page

90E21/22/23/24

SINGLE-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC

Electrical Specification

January 10, 2012

Human Body Model (HBM)

4000

JESD22-A114

Latch Up

100

JESD78A

Latch Up

4.95

JESD78A

Operating Conditions

AVDD, Analog Power Supply

2.8

3.3

3.6

Metering precision guaranteed within 3.0V~3.6V.

DVDD, Digital Power Supply

2.8

3.3

3.6

Metering precision guaranteed within 3.0V~3.6V.

IAVDD, Analog Current (90E21/22)

3.00

L line current channel and voltage channel are

open

IAVDD, Analog Current (90E23/24)

3.75

L line/ N line current channel and voltage channel

are open

IDVDD, Digital Current

2.75

VDD=3.3V

DC Characteristics

Digital Input High Level (all digital pins except OSCI)

2.0

VDD+2.6

VDD=3.3V±10%,

Digital Input High Level (OSCI)

2.0

VDD+0.3

VDD=3.3V±10%

Digital Input Low Level

0.8

VDD=3.3V±10%

Digital Input Leakage Current

µA

VDD=3.6V, VI=VDD or GND

Digital Output Low Level (CF1, CF2)

0.4

VDD=3.3V, IOL=10mA

Digital Output Low Level (IRQ, WarnOut, ZX, SDO)

0.4

VDD=3.3V, IOL=5mA

Digital Output High Level (CF1, CF2)

2.4

VDD=3.3V, IOH=-10mA

Digital Output High Level (IRQ, WarnOut, ZX, SDO)

2.4

VDD=3.3V, IOH=-5mA

Digital Output Low Level (OSCO)

0.4

VDD=3.3V, IOL=1mA

Digital Output High Level (OSCO)

2.4

VDD=3.3V, IOH=-1mA

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