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参数资料
| 型号： | MCP3911A0T-E/ML |
| 厂商： | Microchip Technology |
| 文件页数： | 4/17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) |
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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