參數(shù)資料
型號(hào): AD6644ASTZ-40
廠商: Analog Devices Inc
文件頁(yè)數(shù): 3/24頁(yè)
文件大?。?/td> 0K
描述: IC ADC 14BIT 40MSPS CMOS 52-LQFP
標(biāo)準(zhǔn)包裝: 1
位數(shù): 14
采樣率(每秒): 40M
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 4
功率耗散(最大): 1.3W
電壓電源: 模擬和數(shù)字
工作溫度: -25°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 52-LQFP
供應(yīng)商設(shè)備封裝: 52-LQFP(10x10)
包裝: 托盤
輸入數(shù)目和類型: 1 個(gè)差分,雙極
AD6644
Rev. D | Page 11 of 24
FREQUENCY (MHz)
0
–120
–130
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
(d
B
F
S
)
0
5
10
15
20
25
30
ENCODE = 65MSPS
AIN = 15.5MHz @ –29.5dBFS
NO DITHER
009
71
-0
16
Figure 16. 1M FFT Without Dither
W
O
RS
T
-CAS
E
S
P
URI
O
US
(
d
Bc)
90
50
10
0
40
70
20
30
60
80
100
ANALOG INPUT POWER LEVEL (dBFS)
ENCODE = 65MSPS
AIN = 15.5MHz
NO DITHER
SFDR = 90dB
REFERENCE LINE
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
00
971
-0
17
Figure 17. SFDR Without Dither
ENCODE = 65MSPS
30.5MHz
ENCODE INPUT POWER (dBm)
S
N
R
,W
O
RS
T
S
P
U
RI
O
U
S
(d
B
a
n
d
B
c)
80
70
65
85
95
75
WORST SPUR
90
2.2MHz
30.5MHz
SNR
–15
–10
–5
0
5
10
15
009
71
-0
18
Figure 18. SNR, Worst Spurious vs. Clamped Encode Power (See Figure 27)
FREQUENCY (MHz)
0
–120
–130
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
ENCODE = 65MSPS
AIN = 15.5MHz @ –29.5dBFS
DITHER @ –19dBm
(dB
F
S)
0
5
10
15
20
25
30
009
71
-0
19
Figure 19. 1M FFT with Dither
W
O
R
S
T
-C
A
SE
SP
U
R
IO
U
S
(d
B
c)
90
50
10
0
40
70
20
30
60
80
100
ANALOG INPUT POWER LEVEL (dBFS)
ENCODE = 65MSPS
AIN = 15.5MHz
DITHER = –19dBm
SFDR = 100dB
REFERENCE LINE
SFDR = 90dB
REFERENCE LINE
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
00
97
1-
020
Figure 20. SFDR with Dither
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