Unless otherwise indicated, AVDD
參數(shù)資料
型號: MCP3911A0-E/SS
廠商: Microchip Technology
文件頁數(shù): 4/17頁
文件大小: 0K
描述: IC AFE 24BIT 125KSPS 2CH 20-SSOP
標(biāo)準(zhǔn)包裝: 67
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-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 20-SSOP
包裝: 管件
MCP3911
DS22286A-page 12
2012 Microchip Technology Inc.
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 2-7:
Spurious Free Dynamic
Range Histogram.
FIGURE 2-8:
SNR Histogram.
FIGURE 2-9:
Noise Histogram.
FIGURE 2-10:
ENOB SINAD Histogram.
FIGURE 2-11:
ENOB SNR Histogram.
FIGURE 2-12:
THD vs. OSR.
e
ncy
of
Occurrence
104.5
106
107.5
109
110.5
112
113.5
115
Frequ
e
Spurious Free Dynamic Range (dBFS)
u
ency
of
Occurrence
94.5 94.6 94.8 94.9 95.1 95.2 95.4 95.5 95.6 95.8 95.9
Frequ
Signal to Noise Ratio (dB)
1000
1500
2000
2500
3000
3500
4000
4500
5000
u
ency
Of
Occurrence
Channel 1
V
IN = 0V
T
A = 25 C
16384 Consecutive
Readings
0
500
1000
Freq
u
Output Code (LSB)
q
uencyofOccurr
ence
15.3 15.4
15.4 15.4 15.5
15.5 15.5 15.5 15.6
15.6
Fr
e
q
EffectiveNumberofBits(SINAD)
q
uencyofOccurr
ence
15.4
15.5
15.6
Fr
e
q
EffectiveNumberofBits(SNR)
-80
-70
-60
-50
-40
-30
-20
-10
0
m
onic
Distortion
(dBc)
Dithering = Medium
Dithering = Minimum
Dithering = None
-120
-110
-100
-90
80
32
64
128
256
512
1024
2048
4096
To
ta
lH
a
rm
Oversampling Ratio (OSR)
Dithering = Maximum
te
g
ed u
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