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MCP3918 Datenblatt(PDF) 13 Page - Microchip Technology

Teilenummer MCP3918
Bauteilbeschribung  3V Single-Channel Analog Front End
PDF  88 Pages
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP3918 Datenblatt(HTML) 13 Page - Microchip Technology

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 2014 Microchip Technology Inc.
DS20005287A-page 13
MCP3918
Note:
Unless otherwise indicated, AVDD =3V, DVDD =3V; TA = +25°C, MCLK = 4 MHz; PRESCALE = 1;
OSR = 256; GAIN = 1; Dithering = Maximum; VIN = -0.5 dBFS @ 60 Hz on all channels, VREFEXT = 0; CLKEXT = 1;
BOOST<1:0> = 10.
FIGURE 2-13:
SNR vs.OSR.
FIGURE 2-14:
SFDR vs. OSR.
FIGURE 2-15:
THD vs. MCLK.
FIGURE 2-16:
SINAD vs. MCLK.
FIGURE 2-17:
SNR vs. MCLK.
FIGURE 2-18:
SFDR vs. MCLK.
110
95
100
105
85
90
95
75
80
85
Dithering=Maximum
65
70
75
Dithering Maximum
Dithering=Medium
Dithering=Minimum
Dithering=Off
60
32
64
128
256
512
1024 2048 4096
O
li
R ti (OSR)
Oversampling Ratio (OSR)
120
110
115
100
105
110
95
100
Dithering=Maximum
85
90
g
Dithering=Medium
Dithering=Minimum
Dithering=Off
80
32
64
128
256
512 1024 2048 4096
O
li
R ti (OSR)
Dithering Off
Oversampling Ratio (OSR)
100
-95
-90
-85
-80
-75
-70
-65
-60
Boost = 00
Boost = 01
Boost = 10
Boost = 11
-110
-105
-100
2
4
6
8
10
12
14
16
18
20
MCLK Frequency (MHz)
100
90
95
80
85
75
80
65
70
Boost = 00
Boost = 01
60
2
4
6
8
10
12
14
16
18
Boost = 10
MCLK Frequency (MHz)
100
90
95
80
85
75
80
65
70
Boost = 00
Boost = 01
Boost = 10
60
2
4
6
8
1012141618
Boost = 10
Boost = 11
MCLK Frequency (MHz)
120
110
90
100
80
90
70
80
Boost = 00
Boost = 01
Boost = 10
60
2
4
6
8
10
12
14
16
18
20
Boost = 11
2
4
6
8
10
12
14
16
18
20
MCLK Frequency (MHz)



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