MCP3901 Просмотр технического описания (PDF) - Microchip Technology
Номер в каталоге
Компоненты Описание
Список матч
MCP3901 Datasheet PDF : 62 Pages
| |||
MCP3901
Note: Unless otherwise indicated, AVDD = 5.0V, DVDD = 5.0V; TA = +25°C, MCLK = 4 MHz; PRESCALE = 1;
OSR = 64; GAIN = 1; Dithering OFF; VIN = -0.5 dBFS @ 60 Hz.
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
0
fIN = -0.5dBFS @ 60 Hz
fD = 15.6 ksps
16384 Point FFT
OSR = 64
Dithering ON
2000
4000
6000
Frequency (Hz)
8000
FIGURE 2-7:
Spectral Response.
120
110
Dithering ON
100
90
80
Dithering OFF
70
60
50
40
30
20
10
0
32
64
128
256
Oversampling Ratio (OSR)
FIGURE 2-10:
Spurious Free Dynamic
Range vs. Oversampling Ratio.
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
0
fIN = -60dBFS @ 60 Hz
fD = 15.6 ksps
16384 Point FFT
OSR = 64
Dithering ON
2000
4000
6000
Frequency (Hz)
8000
FIGURE 2-8:
Spectral Response.
12
fIN = 60 Hz
10
MCLK = 4 MHz
OSR = 256
Dithering On
8
6
4
2
0
107 107.5 108 108.5 109 109.5 110 110.5 111
Spurious Free Dynamic Range (dB)
FIGURE 2-9:
Spurious Free Dynamic
Range Histogram.
100
95
90
85
80 Dithering OFF
75
70
65
Dithering ON
60
55
50
32
64
128
16
15
14
13
12
11
10
9
8
256
Oversampling Ratio (OSR)
FIGURE 2-11:
Signal-to-Noise and
Distortion and Effective Number of Bits vs.
Oversampling Ratio.
95
90
OSR = 256 (Dithering ON)
85
OSR = 128 (Dithering ON)
80
75
70
65
60
OSR = 32
55
OSR = 64
50
45
40
1
2
4
8
16
32
Gain (V/V)
FIGURE 2-12:
Signal-to-Noise and
Distortion vs. Gain.
DS22192D-page 10
© 2011 Microchip Technology Inc.
Share Link: 