參數(shù)資料
型號(hào): AD7678ASTZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 4/28頁(yè)
文件大小: 0K
描述: IC ADC 18BIT SAR 100KSPS 48-LQFP
標(biāo)準(zhǔn)包裝: 1
系列: PulSAR®
位數(shù): 18
采樣率(每秒): 100k
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): 26mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類(lèi)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: 托盤(pán)
輸入數(shù)目和類(lèi)型: 1 個(gè)差分,雙極
產(chǎn)品目錄頁(yè)面: 778 (CN2011-ZH PDF)
配用: EVAL-AD7678CB-ND - BOARD EVALUATION FOR AD7678
AD7678
Rev. A | Page 12 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
CODE
2.5
0
65536
131072
196608
262144
INL-LSB
(18-Bit)
1.5
1.0
0
–2.5
0.5
–0.5
03084-0-005
–1.5
2.0
–2.0
–1.0
Figure 5. Integral Nonlinearity vs. Code
CODE IN HEX
70000
20015
COUNTS
60000
40000
20000
0
30000
10000
50000
20016 20017 20018 20019 2001A2001B2001C2001D 2001E
VREF = 5V
03084-0-006
032
5919
60158 59966
3931
42
00
0
Figure 6. Histogram of 131,072 Conversions of a
DC Input at the Code Transition
FREQUENCY (kHz)
0
5
10
50
AMP
LITUDE
(dB
of
Full
S
c
a
le
)
–40
–60
–100
–180
–80
–120
03084-0-012
–140
–20
–160
15
20
25
30
35
40
45
fS = 100kSPS
fIN = 11kHz
VREF = 4.096V
SNR = 99.6dB
THD = –116dB
SFDR = 116.2dB
S/(N+D) = 99.5dB
Figure 7. FFT (11 kHz Tone)
CODE
2.0
0
65536
131072
196608
262144
DNL-LS
B
(1
8
-Bit)
1.5
1.0
0
–1.0
0.5
–0.5
03084-0-008
Figure 8. Differential Nonlinearity vs. Code
CODE IN HEX
90000
2001B
COUNTS
60000
40000
20000
0
30000
10000
50000
2001C 2001D 2001E 2001F 20020 20021 20022 20023
VREF = 5V
70000
80000
03084-0-009
0
522
21862
83610
23000
1053
1
00
Figure 9. Histogram of 131,072 Conversions of a
DC Input at the Code Center
FREQUENCY (kHz)
102
0
S
NR
AND
S
/[N+D]
(dB)
100
98
94
96
10
40
50
03084-0-015
ENOB
S/(N+D)
SNR
16.6
16.4
16.0
16.2
15.8
ENOB
(
B
it
s)
20
30
Figure 10. SNR, S/(N+D), and ENOB vs. Frequency
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