CDB5461AU Cirrus Logic Inc, CDB5461AU Datasheet - Page 14

• Manufacturer Part Number: CDB5461AU
• Description: Eval Bd Sngl Phase Power/Energy
• Manufacturer: Cirrus Logic Inc

Specifications of CDB5461AU

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: CS5461A
• Primary Attributes: 1-Phase, Energy-to-Frequency Output
• Secondary Attributes: GUI, USB, SPI, Microwire Interfaces
• Processor To Be Evaluated: CS5461A, C8051F320
• Interface Type: USB
• Operating Supply Voltage: 5 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 598-1552

To generate a value for the accumulated active energy
over the last computation cycle, the active power can be
multiplied by the time duration of the computation cycle.
The apparent power is the combination of the active
power and reactive power, without reference to an im-
pedance phase angle, and is calculated by the
CS5461A using the following formula:
The apparent power is registered once every computa-
tion cycle.
4.4 Linearity Performance
The linearity of the V
surements (before calibration) will be within ±0.1% of
14
S
RMS
=
V
, I
RMS
RMS
×
, and active power mea-
I
RMS
reading over the ranges specified, with respect to the in-
put voltage levels required to cause full-scale readings
in the I
formance Specifications
Until the CS5461A is calibrated, the accuracy of the
CS5461A (with respect to a reference line-voltage and
line-current level on the power mains) is not guaranteed
to within ±0.1%. See
page 35. The accuracy of the internal calculations can
often be improved by selecting a value for the Cycle
Count Register that will cause the time duration of one
computation cycle to be equal to (or very close to) a
whole-number of power-line cycles (and N must be
greater than or equal to 4000).
RMS
and V
RMS
Section 7. System Calibration
registers. Refer to
on page 7.
CS5461A
Linearity Per-
DS661F2
on