ILA19002

Korzhenevskogo 12, Minsk, 220108, Republic of

Belarus

Fax:

+375 (17) 278 28 22,

Phone: +375 (17) 278 07 11, 212 24 70, 212 24 61,

212 69 16

E-mail: office@bms.by

URL: www.bms.by

8

V

FMO

t

t

Due to comparator offset, the FMO low to high transition can be occur within a range as

shown above. The time between successive low to high transitions will be equal to the mains

voltage period.

TYPICAL APPLICATIONS

In the Application Circuits (Figures 1 and 2), the components required for power metering

applications, are shown.

In Figure 1 a shunt resistor is used for current sensing. In this application, the circuitry

requires a +2.5V, 0V, -2.5V DC supply.

In the case of Figure 2, when using a current transformer for current sensing, a +5V, 0V DC

supply is sufficient.

The most important external components for the ILA19002 integrated circuit are:

current.

Values for RSH of less than 200µ

Ω should be avoided.

Where

=

Line current

RSH =

Shunt resistor/termination resistor

The formula for calculating the output frequency is given below:

2

58

.

3

16

.

11

R

V

I

I

I

I

MHz

FOSC

FOUTX

f

⋅

∗

∗

∗

=

Where FOUTX = Normal rated frequency (1160Hz)

FOSC

= Oscillator frequency (2MHz ...... 4MHz)