参数资料
型号: AD7608BSTZ-RL
厂商: Analog Devices Inc
文件页数: 20/32页
文件大小: 0K
描述: IC DAS W/ADC 18BIT 8CH 64LQFP
标准包装: 1,500
类型: 数据采集系统(DAS),ADC
分辨率(位): 18 b
采样率(每秒): 200k
数据接口: DSP,MICROWIRE?,并联,QSPI?,串行,SPI?
电压电源: 模拟和数字
电源电压: 2.3 V ~ 5.25 V,4.75 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 带卷 (TR)
Data Sheet
AD7608
Rev. A | Page 27 of 32
Figure 46 to Figure 52 illustrates the effect of oversampling on
the code spread in a dc histogram plot. As the oversample rate
is increased, the spread of codes is reduced. (In Figure 46 to
Figure 52, AVCC = VDRIVE = 5 V and the sampling rate was scaled
with OS ratio.)
0
200
400
600
800
1000
1200
1400
1600
–9 –8 –7 –6 –5 –4 –3 –2 –1
0
CODE
1
2
3
4
5
6
7
8
9
3
3 35
82
708
1001
NO OVERSAMPLING
1170
1377
1208
852
588
328
146
66
21 5 0
NUM
BE
R
O
F
O
CCURE
NCE
S
188
411
08938-
044
Figure 46. Histogram of Codes—No OS (18 Codes)
0
200
400
600
800
1000
1400
1800
1200
1600
2000
–8
–7
–6
–5
–4 –3 –2 –1
0
CODE
1
2
3
4
5
6
0
1
15
OVERSAMPLING BY 2
1524
1759
1397
902
498
165
57
9
NUM
BE
R
O
F
O
CCURE
NCE
S
54
208
08938-
045
538
1065
Figure 47. Histogram Of Codes—OS × 2 (14 Codes)
500
0
1000
1500
2000
2500
–5
–4
–3
–2
–1
0
CODE
1
2
3
4
5
OVERSAMPLING BY 4
1551
2224
1913
1072
427
64
14
NUM
BE
R
O
F
O
CCURE
NCE
S
4
40
08938-
046
199
684
Figure 48. Histogram of Codes—OS × 4 (11 Codes)
0
500
1000
1500
2000
2500
3000
3500
–4
–3
–2
–1
0
CODE
1
2
3
4
OVERSAMPLING BY 8
3027
1756
457
44
2
NUM
BE
R
O
F
O
CCURE
NCE
S
4
78
08938-
047
2176
648
Figure 49. Histogram of Codes—OS × 8 (9 Codes)
OVERSAMPLING BY 16
0
500
1000
1500
2000
3000
4000
2500
3500
4500
–2
–1
0
CODE
1
3
2
3947
385
2703
7
NUM
BE
R
O
F
O
CCURE
NCE
S
08938-
148
1081
69
Figure 50. Histogram of Codes—OS × 16 (6 Codes)
OVERSAMPLING BY 32
0
1000
2000
3000
4000
5000
6000
–2
–1
0
CODE
1
2
5403
17
1460
NUM
BE
R
O
F
O
CCURE
NCE
S
08938-
149
1301
11
Figure 51. Histogram of Codes—OS × 32 (5 Codes)
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