參數(shù)資料
型號: AD7608BSTZ-RL
廠商: Analog Devices Inc
文件頁數(shù): 7/32頁
文件大?。?/td> 0K
描述: IC DAS W/ADC 18BIT 8CH 64LQFP
標準包裝: 1,500
類型: 數(shù)據采集系統(tǒng)(DAS),ADC
分辨率(位): 18 b
采樣率(每秒): 200k
數(shù)據接口: DSP,MICROWIRE?,并聯(lián),QSPI?,串行,SPI?
電壓電源: 模擬和數(shù)字
電源電壓: 2.3 V ~ 5.25 V,4.75 V ~ 5.25 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應商設備封裝: 64-LQFP(10x10)
包裝: 帶卷 (TR)
Data Sheet
AD7608
Rev. A | Page 15 of 32
–1.0
–0.7
–0.3
–0.1
0.1
0.3
0.5
0.9
–0.9
–0.4
–0.5
–0.2
0
0.2
0.4
0.7
1.0
DN
L
(L
SB
)
CODE
–0.6
–0.8
0.8
0.6
08938-
013
AVCC, VDRIVE = 5V
INTERNAL REFERENCE
fSAMPLE = 200 kSPS
TA = 25°C
±5V RANGE
0
25,
000
50,
000
75,
000
100,
000
125,
000
150,
000
175,
000
200,
000
225,
000
250,
000
262,
144
Figure 14. Typical DNL, ±5 V Range
80
60
40
20
0
–20
–40
–60
–40
–25
–10
5
20
35
50
65
80
–80
NF
S
E
RRO
R
(
L
S
B)
TEMPERATURE (°C)
200kSPS
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
±5V RANGE
±10V RANGE
08938-
017
Figure 15. NFS Error vs. Temperature
80
60
40
20
0
–20
–40
–60
–40
–25
–10
5
20
35
50
65
80
–80
PF
S
ER
R
O
R
(L
SB
)
TEMPERATURE (°C)
200kSPS
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
±5V RANGE
±10V RANGE
08938-
118
Figure 16. PFS Error vs. Temperature
40
–40
–25
–10
5
20
35
50
65
80
–40
–32
–24
–16
–8
0
8
16
24
32
NF
S
/P
F
S
CHANNE
L
M
AT
CHI
NG
(
L
S
B)
TEMPERATURE (°C)
±10V RANGE
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
PFS ERROR
NFS ERROR
08938-
018
Figure 17. NFS/PFS Error Matching
10
8
6
4
2
0
120k
100k
80k
60k
40k
20k
–2
PF
S/
N
F
S
ER
R
O
R
(%
F
S)
SOURCE RESISTANCE ()
AVCC, VDRIVE = 5V
fSAMPLE = 200 kSPS
TA = 25°C
EXTERNAL REFERENCE
SOURCE RESISTANCE IS MATCHED ON
THE VxGND INPUT
±10V AND ±5V RANGE
08938-
019
Figure 18. PFS/NFS Error vs. Source Resistance
80
85
90
95
100
105
10
100
1k
10k
100k
S
NR
(
d
B)
INPUT FREQUENCY (Hz)
AVCC, VDRIVE = 5V
fSAMPLE CHANGES WITH OS RATE
TA = 25°C
INTERNAL REFERENCE
±10V RANGE
08938-
119
OS × 64
OS × 32
OS × 16
OS × 8
OS × 4
OS × 2
NO OS
Figure 19. SNR vs. Input Frequency for Different Oversampling Rates, ±10 V Range
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