參數(shù)資料
型號: EVAL-AD7946SDZ
廠商: Analog Devices Inc
文件頁數(shù): 23/24頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD7946
標準包裝: 1
系列: *
AD7946
Rev. A | Page 8 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
CODE
INL
(
L
SB)
04656-006
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
4096
8192
12288
16384
POSITIVE INL = +0.17LSB
NEGATIVE INL = –0.26LSB
Figure 6. Integral Nonlinearity vs. Code
04656-
046
0
50000
100000
150000
200000
250000
300000
2009
200A
200B
200C
200D
200E
200F
CODE IN HEX
COUNTS
00
0
261120
0
VDD = REF = 5V
Figure 7. Histogram of a DC Input at the Code Center
FREQUENCY (kHz)
AM
P
L
IT
UDE
(
d
B
o
fF
u
ll
S
cal
e)
04
65
6-
00
8
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
20
40
60
80 100 120 140 160 180 200 220 240
8192 POINT FFT
VDD = REF = 5V
fS = 500kSPS
fIN = 20.14kHz
SNR = 85.3dB
THD = –105.2dB
SECOND HARMONIC = –106dB
THIRD HARMONIC = –110dB
Figure 8. FFT Plot
CODE
DNL
(LS
B
)
04656-009
POSITIVE DNL = +0.20LSB
NEGATIVE DNL = –0.13LSB
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
4096
8192
12288
16384
Figure 9. Differential Nonlinearity vs. Code
04656-047
0
25000
50000
75000
100000
125000
150000
2059
205A
205B
205C
205D
205E
CODE IN HEX
COUNTS
0
131592
129528
0
VDD = REF = 5V
Figure 10. Histogram of a DC Input at the Code Transition
INPUT LEVEL (dB)
S
NR
RE
FE
RE
NCE
TO
FULL
S
CALE
(dB)
04656-011
80
82
84
86
88
90
–10
–8–6–4–2
Figure 11. SNR vs. Input Level
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