MCP3909 Microchip Technology, MCP3909 Datasheet - Page 11

• Manufacturer Part Number: MCP3909
• Description: Energy Metering IC with SPI Interface and Active Power Pulse Output
• Manufacturer: Microchip Technology

Note: Unless otherwise specified, DV
MCLK = 3.58 MHz, CH1 input = 660 mV
FIGURE 2-19:
Error with External V
FIGURE 2-20:
Error with External V
FIGURE 2-21:
Error with External V
© 2006 Microchip Technology Inc.
-0.2
-0.4
-0.6
-0.8
-0.2
-0.4
-0.6
-0.8
-0.2
-0.4
-0.6
-0.8
0.8
0.6
0.4
0.2
0.8
0.6
0.4
0.2
0.8
0.6
0.4
0.2
-1
-1
-1
0.0001
0.0000
0.0000
1
0
1
0
1
0
+25°C
+25°C
+25°C
0.0010
0.0001
0.0001
CH1 Vp-p Amplitude (V)
CH1 Vp-p Amplitude (V)
CH1 Vp-p Amplitude (V)
-40°C
Active Power Measurement
Active Power Measurement
Active Power Measurement
REF
REF
REF
0.0010
0.0100
0.0010
(G = 2, PF = 0.5).
(G = 8, PF = 1).
(G = 8, PF = 0.5).
+85°C
0.0100
0.0100
0.1000
-40°C
DD
+85°C
-40°C
, AV
P-P
+85°C
at 50 Hz, CH0 amplitude sweeps at 50 Hz.
DD
1.0000
0.1000
0.1000
= 5V; A
GND
, D
GND
FIGURE 2-22:
Error with External V
FIGURE 2-23:
Error with External V
FIGURE 2-24:
Distortion Ratio vs. Input Signal Amplitude
(G = 1).
= 0V; V
100
90
80
70
60
50
40
30
20
10
-0.2
-0.4
-0.6
-0.8
-0.2
-0.4
-0.6
-0.8
0.0001
0.8
0.6
0.4
0.2
0.8
0.6
0.4
0.2
0
-1
-1
0.0000
0.0000
1
0
1
0
- 40°C
REF
+25°C
= Internal, HPF = 1 (AC mode),
0.0010
SINAD (dBFS)
0.0001
0.0001
CH0 Vp-p Amplitude (V)
+85°C
CH1 Vp-p Amplitude (V)
CH1 Vp-p Amplitude (V)
Active Power Measurement
Active Power Measurement
Signal-to-Noise and
REF
REF
0.0100
0.0010
0.0010
(G = 16, PF = 1).
(G =16, PF = 0.5).
SINAD(dB)
MCP3909
0.1000
-40°C
0.0100
0.0100
+85°C
DS22025A-page 11
1.0000
+25°C
0.1000
100
90
80
70
60
50
40
30
20
10
0
0.1000