參數(shù)資料
型號: AD6645ASVZ-80
廠商: Analog Devices Inc
文件頁數(shù): 4/24頁
文件大?。?/td> 0K
描述: IC ADC 14BIT 80MSPS 52TQFP
設計資源: Low Jitter Sampling Clock Generator for High Performance ADCs Using AD9958/9858 and AD9515 (CN0109)
標準包裝: 1
位數(shù): 14
采樣率(每秒): 80M
數(shù)據(jù)接口: 并聯(lián)
轉換器數(shù)目: 4
功率耗散(最大): 1.75W
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: 52-TQFP 裸露焊盤
供應商設備封裝: 52-TQFP-EP(10x10)
包裝: 托盤
輸入數(shù)目和類型: 1 個差分,雙極
AD6645
Rev. D | Page 12 of 24
FREQUENCY (MHz)
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
5
3
2
6
4
A
M
PL
IT
U
D
E
(
d
B
F
S)
ENCODE = 80.0MSPS
AIN = 30.5MHz @ –29.5dBFS
NO DITHER
5
0
101520
25303540
02
64
7-
0
28
Figure 22. 1 M Sample FFT Without Dither
ANALOG INPUT LEVEL (dBFS)
0
10
20
30
40
50
60
70
80
90
100
110
W
O
R
S
T
-CAS
E
S
P
URI
O
US
(
d
Bc)
90
80
70
60
50
40
30
20
10
0
SFDR = 90dB
REFERENCE LINE
ENCODE = 80.0MSPS
AIN = 30.5MHz
NO DITHER
02
64
7-
02
9
Figure 23. SFDR Without Dither
FREQUENCY (MHz)
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
AM
P
L
IT
UDE
(
d
BF
S
)
2
6
5
4
3
ENCODE = 76.8MSPS
AIN = 69.1MHz @ –1dBFS
SNR = 73.5dB
SFDR = 89.0dBc
5
0
10152025303540
02
64
7-
03
0
Figure 24. Single Tone @ 69.1 MHz, Encode = 76.8 MSPS
FREQUENCY (MHz)
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
5
3
2
6
4
AM
P
L
IT
UDE
(
d
BF
S
)
5
0
10152025303540
ENCODE = 80.0MSPS
AIN = 30.5MHz @ –29.5dBFS
WITH DITHER @ –19.2 dBm
02
64
7-
0
31
Figure 25. 1 M Sample FFT with Dither
ANALOG INPUT LEVEL (dBFS)
0
10
20
30
40
50
60
70
80
90
100
110
W
O
R
S
T
-C
A
SE
SPU
R
IO
U
S
(d
B
c)
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
SFDR = 90dB
REFERENCE LINE
SFDR = 100dB
REFERENCE LINE
ENCODE = 80.0MSPS
AIN = 30.5MHz
WITH DITHER @ –19.2dBm
0
264
7-
0
32
Figure 26. SFDR with Dither
FREQUENCY (MHz)
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
AM
P
L
IT
UDE
(
d
BF
S
)
2
6
5
4
3
ENCODE = 76.8MSPS
AIN = W-CDMA @ 69.1MHz
0
5
10
15
20
25
30
35
40
02
64
7-
0
33
Figure 27. W-CDMA Tone @ 69.1 MHz, Encode = 76.8 MSPS
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