Cirrus Logic CS5484 - Manual (Page 9)

CS5484
DS981F3 9
3. CHARACTERISTICS AND SPECIFICATIONS
RECOMMENDED OPERATING CONDITIONS
POWER MEASUREMENT CHARACTERISTICS
Notes: 1. Specifications guaranteed by design and characterization.
2. Active energy is tested with power factor (PF) = 1.0. Reactive energy is tested with Sin(

) = 1.0. Energy error measured at
system level using a single energy pulse. Where: 1) One energy pulse = 0.5Wh or 0.5Varh; 2) VDDA = +3.3V, T
A
= 25°C, MCLK
= 4.096MHz; 3) System is calibrated.
3. Calculated using register values; N ≥ 4000.
4. I
RMS
error calculated using register values. 1) VDDA = +3.3V; T
A
= 25°C; MCLK = 4.096MHz; 2) AC offset calibration applied.
TYPICAL LOAD PERFORMANCE
• Energy error measured at system level using single energy pulse; where one energy pulse = 0.5Wh or 0.5Varh
• I
RMS
error calculated using register values
• VDDA = +3.3V; T
A
= 25°C; MCLK = 4.096MHz
Parameter Symbol Min Typ Max Unit
Positive Analog Power Supply VDDA 3.0 3.3 3.6 V
Specified Temperature Range T
A
-40 - +85 °C
Parameter Symbol Min Typ Max Unit
Active Energy All Gain Ranges
(Note 1 and 2) Current Channel Input Signal Dynamic Range 4000:1
P
Avg
- ±0.1 - %
Reactive Energy All Gain Ranges
(Note 1 and 2) Current Channel Input Signal Dynamic Range 4000:1
Q
Avg
- ±0.1 - %
Apparent Power All Gain Ranges
(Note 1 and 3) Current Channel Input Signal Dynamic Range 1000:1
S - ±0.1 - %
Current RMS All Gain Ranges
(Note 1, 3, and 4) Current Channel Input Signal Dynamic Range 1000:1
I
RMS
- ±0.1 - %
Voltage RMS
(Note 1 and 3) Voltage Channel Input Signal Dynamic Range 20:1
V
RMS
- ±0.1 - %
Power Factor All Gain Ranges
(Note 1 and 3) Current Channel Input Signal Dynamic Range 1000:1
PF - ±0.1 - %
-1
-0.5
0
0.5
1
0 500 1000 1500 2000 2500 3000 3500 4000 4500
Perce
nt Erro
r (%)
Current Dynamic Range (x : 1 )
Lagging PF = 0.5
Leading PF = 0.5
PF = 1
Figure 4. Active Energy Load Performance