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参数资料
| 型号： | MCP3911A0T-E/ML |
| 厂商： | Microchip Technology |
| 文件页数： | 5/17页 |
| 文件大小： | 0K |
| 描述： | IC AFE 24BIT 125KSPS 2CH 20-QFN |
| 标准包装： | 3,300 |
| 位数： | 24 |
| 通道数： | 2 |
| 电压 - 电源，模拟： | 2.7 V ~ 3.6 V |
| 电压 - 电源，数字： | 2.7 V ~ 3.6 V |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（4x4） |
| 包装： | 带卷 (TR) |
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
o
-Noise
and
Distortion
Ratio
(dB)
Dithering = Maximum
Dithering = Medium
Dithering = Minimum
Dithering = None
0
10
20
30
40
32
64
128
256
512
1024 2048 4096
Signal-t
o
Oversampling Ratio (OSR)
40
50
60
70
80
90
100
110
120
-to-Noise
Ratio
(dB)
Dithering = Maximum
Dithering = Medium
Dithering = Minimum
Dithering = None
0
10
20
30
40
32
64
128
256
512
1024
2048
4096
Signal
-
Oversampling Ratio (OSR)
50
60
70
80
90
100
110
120
130
140
ree
Dy
namic
Range
(dBFS)
Dithering = Maximum
Dithering = Medium
Dithering = Minimum
Dithering = None
0
10
20
30
40
32
64
128
256
512
1024 2048 4096
Spurious
F
r
Oversampling Ratio (OSR)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
rmonic
Distortion
(dBc)
Boost = 0.5x
Boost = 0.66x
Boost = 1x
-120
-110
-100
90
0
5
10
15
20
25
30
To
ta
lH
a
MCLK Frequency (MHz)
Boost = 2x
40
50
60
70
80
90
100
110
120
-Noise
and
Distortion
Ratio
(dB)
Boost =05x
Boost = 0.66x
Boost = 2x
Boost = 1x
0
10
20
30
40
0
5
10
15
20
25
30
Signal-to
-
MCLK Frequency (MHz)
Boost =0.5x
40
50
60
70
80
90
100
110
120
al
to
Noise
Ratio
(dB)
Boost = 0.5x
Boost = 0.66x
Boost = 2x
Boost = 1x
0
10
20
30
0
5
10
15
20
25
30
Sign
MCLK Frequency (MHz)
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