MCP3909 Microchip Technology, MCP3909 Datasheet - Page 12

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

MCP3909
Note: Unless otherwise specified, DV
MCLK = 3.58 MHz, CH1 input = 660 mV
FIGURE 2-25:
Distortion Ratio vs. Input Signal Amplitude
(G = 2).
FIGURE 2-26:
Distortion Ratio vs. Input Signal Amplitude
(G = 8).
DS22025A-page 12
100
100
0.000100 0.001000 0.010000 0.100000 1.000000
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0.00001
0
0
0.0001
CH0 Vp-p Amplitude (V)
CH0 Vp-p Amplitude (V)
SINAD (dBFS)
SINAD (dBFS)
Signal-to-Noise and
Signal-to-Noise and
0.001
SINAD (dB)
SINAD (dB)
0.01
DD
, AV
P-P
0.1
at 50 Hz, CH0 amplitude sweeps at 50 Hz.
DD
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
= 5V; A
GND
, D
GND
FIGURE 2-27:
Distortion Ratio vs. Input Signal Amplitude
(G = 16).
FIGURE 2-28:
Input Signal.
= 0V; V
100
0.000010 0.000100 0.001000 0.010000 0.100000
90
80
70
60
50
40
30
20
10
-100
-120
-140
-160
0
-20
-40
-60
-80
0
REF
0
= Internal, HPF = 1 (AC mode),
CH0 Vp-p Amplitude (V)
2000
SINAD (dBFS)
Signal-to-Noise and
Frequency Spectrum, 50 Hz
Frequency (Hz)
© 2006 Microchip Technology Inc.
SINAD (dB)
4000
6000
100
90
80
70
60
50
40
30
20
10
0