Unless otherwise indicated, AVDD
參數(shù)資料
型號: MCP3911A0-E/ML
廠商: Microchip Technology
文件頁數(shù): 6/17頁
文件大?。?/td> 0K
描述: IC AFE 24BIT 125KSPS 2CH 20-QFN
標(biāo)準(zhǔn)包裝: 91
位數(shù): 24
通道數(shù): 2
電壓 - 電源,模擬: 2.7 V ~ 3.6 V
電壓 - 電源,數(shù)字: 2.7 V ~ 3.6 V
封裝/外殼: 20-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 20-QFN(4x4)
包裝: 管件
MCP3911
DS22286A-page 14
2012 Microchip Technology Inc.
Note:
Unless otherwise indicated, AVDD = 3.3V, DVDD = 3.3 V; 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 2-19:
SFDR vs. MCLK.
FIGURE 2-20:
SINAD vs. GAIN.
FIGURE 2-21:
SINAD vs. GAIN (Dithering
Off).
FIGURE 2-22:
SINAD vs. GAIN vs. AZ
Speed Chart.
FIGURE 2-23:
THD vs. Input Signal
Amplitude.
FIGURE 2-24:
SINAD vs. Input Signal
Amplitude.
40
50
60
70
80
90
100
110
120
Free
Dy
namic
Range
(dBFS)
Boost = 0.5x
Boost = 0.66x
Boost = 2x
Boost = 1x
0
10
20
30
0
5
10
15
20
25
30
Spurious
Frequency (MHz)
40
50
60
70
80
90
100
110
120
N
oise
and
Distortion
R
atio
(dB)
OSR = 32 OSR = 64
OSR = 128
OSR = 256
OSR = 4096
OSR = 2048
OSR = 1024
OSR = 512
0
10
20
30
1248
16
32
Signal
to
N
R
Gain (V/V)
70
75
80
85
90
95
100
1248
16
32
Signal
to
Noise
and
Dis
tortion
Ra
tio
(dB)
Gain (V/V)
Auto Zero Speed = Fast
Auto Zero Speed = Slow
80
-70
-60
-50
-40
-30
-20
-10
0
o
nic
Distortion
(dBc)
-120
-110
-100
-90
-80
-6
-5
-4
-3
-2
-1
0
1
2
3
To
ta
lH
a
rm
o
Input Signal Amplitude (dBFS)
Channel 0
Channel 1
0
10
20
30
40
50
60
70
80
90
100
110
120
-6
-5
-4
-3
-2
-1
0
1
2
3
Signal
to
Noise
and
Distortion
Ratio
(dB)
Input Signal Amplitude (dBFS)
Channel 0
Channel 1
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