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MCP3911 датащи(PDF) 13 Page - Microchip Technology

номер детали MCP3911
подробное описание детали  3.3V Two-Channel Analog Front End
PDF  72 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP3911 датащи(HTML) 13 Page - Microchip Technology

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© 2012 Microchip Technology Inc.
DS22286A-page 13
MCP3911
Note:
Unless otherwise indicated, AVDD = 3.3V, DVDD = 3.3V; TA = 25 °C, MCLK = 4 MHz; PRESCALE = 1; OSR
= 256; GAIN = 1; Dithering = Maximum; VIN = -0.5 dBFS @ 60 Hz, VREFEXT = 0; CLKEXT = 1, AZ_FREQ
= 0; BOOST = 1X.
FIGURE 2-13:
SINAD vs. OSR.
L
FIGURE 2-14:
SNR vs.OSR.
FIGURE 2-15:
SFDR vs. OSR.
FIGURE 2-16:
THD vs. MCLK.
FIGURE 2-17:
SINAD vs. MCLK.
FIGURE 2-18:
SNR vs. MCLK.
40
50
60
70
80
90
100
110
120
Dithering = Maximum
Dithering = Medium
Dithering = Minimum
Dithering = None
0
10
20
30
40
32
64
128
256
512
1024 2048 4096
Oversampling Ratio (OSR)
40
50
60
70
80
90
100
110
120
Dithering = Maximum
Dithering = Medium
Dithering = Minimum
Dithering = None
0
10
20
30
40
32
64
128
256
512
1024
2048
4096
Oversampling Ratio (OSR)
50
60
70
80
90
100
110
120
130
140
Dithering = Maximum
Dithering = Medium
Dithering = Minimum
Dithering = None
0
10
20
30
40
32
64
128
256
512
1024 2048 4096
Oversampling Ratio (OSR)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
Boost = 0.5x
Boost = 0.66x
Boost = 1x
-120
-110
-100
90
0
5
10
15
20
25
30
MCLK Frequency (MHz)
Boost = 2x
40
50
60
70
80
90
100
110
120
Boost =05x
Boost = 0.66x
Boost = 2x
Boost = 1x
0
10
20
30
40
0
5
10
15
20
25
30
MCLK Frequency (MHz)
Boost =0.5x
40
50
60
70
80
90
100
110
120
Boost = 0.5x
Boost = 0.66x
Boost = 2x
Boost = 1x
0
10
20
30
0
5
10
15
20
25
30
MCLK Frequency (MHz)



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