Datasheet

MCP3909
DS22025C-page 10  2006-2012 Microchip Technology Inc.
Note: Unless otherwise specified, DV
DD
, AV
DD
= 5V; A
GND
, D
GND
= 0V; V
REF
= Internal, HPF = 1 (AC mode),
MCLK = 3.58 MHz, CH1 input = 660 mV
P-P
at 50 Hz, CH0 amplitude sweeps at 50 Hz.
FIGURE 2-7: Active Power Measurement
Error (Gain = 1, PF = 1).
L
FIGURE 2-8: Active Power Measurement
Error (Gain = 1, PF = 0.5).
FIGURE 2-9: Measurement Error,
Temperature = +125°C, Gain = 1.
FIGURE 2-10: Measurement Error,
Temperature = +125°C, Gain = 2.
FIGURE 2-11: Measurement Error,
Temperature = +125°C, Gain = 8.
FIGURE 2-12: Measurement Error,
Temperature = +125°C, Gain = 16.
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0.0001 0.0010 0.0100 0.1000 1.0000
CH0 Vp-p Amplitude (V)
Measurement Error (%)
+85°C
+25°C
- 40°C
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0.0001 0.0010 0.0100 0.1000 1.0000
CH0 Vp-p Amplitude (V)
Measurement Error (%)
+85°C
+25°C
-40°C
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0.0001 0.001 0.01 0.1 1
CH1 V A lit d (V)
Measurement Error (%)
+25°C; PF = 1
+25°C; PF = 0.5
+125°C; PF = 0.5
+125°C; PF = 1
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0.0001 0.001 0.01 0.1 1
CH1 Vp-p Amplitude (V)
Measurement Error (%)
+25°C; PF = 1
+25°C; PF = 0.5
+125°C; PF = 1
+125°C; PF = 0.5
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0.0001 0.001 0.01 0.1 1
CH1 Vp-p Amplitude (V)
Measurement Error (%)
+125°C; PF = 1
+125°C; PF = 0.5
+25°C; PF = 1
+25°C; PF = 0.5
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0.0001 0.001 0.01 0.1 1
CH1 Vp-p Amplitude (V)
Measurement Error (%)
+25°C; PF = 1
+25°C; PF = 0.5
+125°C; PF = 1
+125°C; PF = 0.5