CS5490-ISZ View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS5490-ISZ

Two Channel Energy Measurement IC

Cirrus Logic 

CS5490

8. BASIC APPLICATION CIRCUITS

The CS5490 is configured to measure power in a

single-phase, two-wire single voltage and current

system, as illustrated in Figure 21. In this diagram, a

current transformer (CT) is used to sense the line load

current, and a resistive voltage divider is used to sense

the line voltage.

+3.3V

0.1µF

0.1µF

+3.3V

N

Line

VDDA MODE VDDD

Wh

1K 5 x250K

CT

LOA D

½ R BURDEN

½ R BURDEN

1K

27nF

27nF

1K

27nF

27nF

1K

VIN-

DO

VIN+

CS5490

RX

TX

IIN+

XIN

XOUT

IIN-

VREF+

VREF-

RESET

GNDA

+3. 3V

4.096 MHz

Application

Processor

0.1µF +3.3V

10K

0.1 µF

Figure 21. Typical Connection Diagram (Single-phase, Two-wire, Power Meter)

54

DS982F2

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