參數(shù)資料
型號: AD7643BSTZRL
廠商: Analog Devices Inc
文件頁數(shù): 4/28頁
文件大小: 0K
描述: IC ADC 18BIT DIFFER W/REF 48LQFP
標(biāo)準(zhǔn)包裝: 2,000
系列: PulSAR®
位數(shù): 18
采樣率(每秒): 1.25M
數(shù)據(jù)接口: 串行,并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 80mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-LQFP
供應(yīng)商設(shè)備封裝: 48-LQFP(7x7)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 1 個差分,雙極
配用: EVAL-AD7643CBZ-ND - BOARD EVALUATION FOR AD7643
AD7643
Rev. 0 | Page 12 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
3.0
–3.0
0
262144
CODE
IN
L
(
L
S
B
)
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
65536
131072
196608
06
02
4-
00
5
Figure 5. Integral Nonlinearity vs. Code
40000
0
1F
F
E
1FFE
F
1F
F
0
1F
F
1
1F
F
2
1F
F
3
1F
F
4
1F
F
5
1F
F
6
1F
F
7
1F
F
8
1F
F
9
1F
F
A
1F
FFB
1F
FFC
1F
FFD
1FFF
E
1F
F
CODE IN HEX
CO
UNT
S
06
024
-0
06
35000
30000
25000
20000
15000
10000
5000
σ = 1.67
VREF = 2.5V
01
3
16
30
228
59
33606
26875
23521
17320
4848
3062
13376
6371
1295
488
Figure 6. Histogram of 131,072 Conversions of a DC Input at
the Code Center (External Reference)
2.0486
2.0484
2.0482
2.0480
2.0478
2.0476
2.0474
2.0472
2.0470
–55
125
105
85
65
45
25
5
–15
–35
TEMPERATURE (°C)
V
RE
F
(V
)
06
02
4-
0
07
Figure 7. Typical Reference Voltage Output vs. Temperature (2 Units)
1.25
–1.0
0
262144
CODE
DN
L
(
L
S
B)
0.5
65536
131072
196608
1.0
0
–0.5
06
02
4-
0
08
Figure 8. Differential Nonlinearity vs. Code
35000
0
2002
7
2002
8
2002
9
2002
A
20
02B
20
02C
20
02D
2002
E
20
02F
2003
0
2003
1
2003
2
2003
3
2003
4
2003
5
2003
6
2003
7
2003
8
CODE IN HEX
CO
UNT
S
06
024
-0
09
30000
25000
20000
15000
10000
5000
21 28 305 665
297 108 32
4726 5401
15505
18613
28621
24350
16141
3807
10173
2306
σ = 2.04
VREF = 2.048V
Figure 9. Histogram of 131,072 Conversions of a DC Input at
the Code Center (Internal Reference)
12
–12
–10
–8
–6
–4
–2
0
2
4
6
8
10
–55
125
105
85
65
45
25
5
–15
–35
TEMPERATURE (°C)
Z
E
R
O
E
R
RO
R
,G
AI
N
E
RRO
R
(
L
S
B)
06
02
4-
0
10
GAIN ERROR
ZERO ERROR
Figure 10. Zero Error, Gain Error vs. Temperature
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