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MCP3909 Datasheet(PDF) 13 Page - Microchip Technology

Part # MCP3909
Description  Energy Metering IC with SPI Interface and Active Power Pulse Output
PDF  44 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP3909 Datasheet(HTML) 13 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
DS22025B-page 13
MCP3909
Note: Unless otherwise specified, DVDD, AVDD = 5V; AGND, DGND = 0V; VREF = Internal, HPF = 1 (AC mode),
MCLK = 3.58 MHz, CH1 input = 660 mVP-P at 50 Hz, CH0 amplitude sweeps at 50 Hz.
FIGURE 2-25:
Signal-to-Noise and
Distortion Ratio vs. Input Signal Amplitude
(G = 2).
FIGURE 2-26:
Signal-to-Noise and
Distortion Ratio vs. Input Signal Amplitude
(G = 8).
FIGURE 2-27:
Signal-to-Noise and
Distortion Ratio vs. Input Signal Amplitude
(G = 16).
FIGURE 2-28:
Frequency Spectrum,
50 Hz Input Signal.
0
10
20
30
40
50
60
70
80
90
100
0.000100 0.001000 0.010000 0.100000 1.000000
CH0 Vp-p Amplitude (V)
0
10
20
30
40
50
60
70
80
90
100
SINAD (dBFS)
SINAD (dB)
0
10
20
30
40
50
60
70
80
90
100
0.00001
0.0001
0.001
0.01
0.1
CH0 Vp-p Amplitude (V)
0
10
20
30
40
50
60
70
80
90
100
SINAD (dB)
SINAD (dBFS)
0
10
20
30
40
50
60
70
80
90
100
0.000010 0.000100 0.001000 0.010000 0.100000
CH0 Vp-p Amplitude (V)
0
10
20
30
40
50
60
70
80
90
100
SINAD (dBFS)
SINAD (dB)
-160
-140
-120
-100
-80
-60
-40
-20
0
0
2000
4000
6000
Frequency (Hz)



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