AD71056ARZ-RL Analog Devices Inc, AD71056ARZ-RL Datasheet - Page 11

• Manufacturer Part Number: AD71056ARZ-RL
• Description: IC,Power Metering,CMOS,SOP,16PIN,PLASTIC
• Manufacturer: Analog Devices Inc

Specifications of AD71056ARZ-RL

• Input Impedance: 320 KOhm
• Measurement Error: 0.1%
• Voltage - I/o High: 2.4V
• Voltage - I/o Low: 0.8V
• Current - Supply: 5mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Meter Type: Single Phase
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

where:
i(t) is the instantaneous current.
I
I
β
Using Equation 2 and Equation 3, the real power, P, can be
expressed in terms of its fundamental real power (P
harmonic real power (P
where:
and P
0
h
h
is the dc component.
is the rms value of Current Harmonic h.
is the phase angle of the current harmonic.
P = P
P
ϕ
ϕ
t i
P
) (
H
1
1
h
H
= V
= α
= α
=
=
0 I
1
h
1
∞
∑
h
1
≠1
+ P
− β
− β
× I
V
+
h
H
1
1
h
× I
2
cos ϕ
×
h
h
cos ϕ
∞
∑
≠
1
o
H
I
) as
h
h
×
sin
(
h
ω
t
+
β
h
)
1
) and
Rev. A | Page 11 of 20
(5)
(3)
(4)
In Equation 5, a harmonic real power component is generated
for every harmonic, provided that harmonic is present in both
the voltage and current waveforms. The power factor calculation
has previously been shown to be accurate in the case of a pure
sinusoid. Therefore, the harmonic real power must also correctly
account for the power factor because it is made up of a series of
pure sinusoids.
Note that the input bandwidth of the analog inputs is 7 kHz at
the nominal internal oscillator frequency of 450 kHz.
AD71056