AV
參數(shù)資料
型號: EVAL-AD7262EDZ
廠商: Analog Devices Inc
文件頁數(shù): 5/33頁
文件大?。?/td> 0K
描述: BOARD EVAL CONTROL AD7262
標準包裝: 1
ADC 的數(shù)量: 2
位數(shù): 12
采樣率(每秒): 1M
數(shù)據(jù)接口: 串行
輸入范圍: 5 Vpp
在以下條件下的電源(標準): 120mW @ 1MSPS
工作溫度: -40°C ~ 105°C
已用 IC / 零件: AD7262
已供物品: 板,CD
AD7262
Rev. 0 | Page 12 of 32
–90
–88
–86
–84
–82
–78
–76
–74
–72
–80
–70
1
2
3
4
6
8
12 16 24 32 48 64 96 128
GAIN
CM
R
(
d
B)
AVCC = 5V
VDRIVE = 5V
fS = 1MSPS
INTERNAL REFERENCE
fRIPPLE = 50kHz
07
60
6-
0
17
Figure 17. Common-Mode Rejection vs. Gain
–80
–79
–78
–77
–76
–75
–74
–73
–72
–71
–70
0
20
40
60
80
100
120
140
160
180
200
RIPPLE FREQUENCY (kHz)
CM
R
(
d
B)
AVCC = 5V
VDRIVE = 5V
fS = 1MSPS
VRIPPLE = 700mV p-p
GAIN = 2
INTERNAL REFERENCE
07
60
6-
0
18
Figure 18. Common-Mode Rejection vs. Common-Mode Ripple Frequency
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7
VCM RANGE (V)
TH
D
(
d
B
)
AVCC = 5V
VDRIVE = 5V
fS = 1MSPS
INTERNAL REFERENCE
fIN = 100kHz
GAIN 1
GAIN 2
GAIN 3
GAIN 4
GAIN 12
GAIN 24
GAIN 6
GAIN ≥ 32
GAIN 8
GAIN 16
07
60
6-
01
9
Figure 19. THD vs. Common-Mode Range for Various PGA Gain Settings
OVERDRIVE VOLTAGE (mV)
P
R
O
P
AG
AT
IO
N
D
E
L
A
Y
(
s)
0
1
2
3
4
5
6
7
8
9
10
0
10
203040
5060
7080
90
100
L TO H, CA_CBVCC = 4.5V
L TO H, CA_CBVCC = 5V
H TO L, CA_CBVCC = 3.6V
H TO L, CA_CBVCC = 4.5V
H TO L, CA_CBVCC = 5V
H TO L, CA_CBVCC = 2.7V
L TO H, CA_CBVCC = 3.6V
L TO H, CA_CBVCC = 2.7V
AVCC = 5V
VDRIVE = 3.3V
TA = 25°C
07
60
6-
0
20
Figure 20. Propagation Delay for Comparator A and Comparator B vs.
Overdrive Voltage for Various Supply Voltages
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
OVERDRIVE VOLTAGE (mV)
P
R
O
P
AG
AT
IO
N
D
E
L
A
Y
(
s)
0
10203040506070
8090
100
H TO L, CC_CDVCC = 4.5V
H TO L, CC_CDVCC = 5V
L TO H, CC_CDVCC = 3.6V
L TO H, CC_CDVCC = 4.5V
L TO H, CC_CDVCC = 5V
L TO H, CC_CDVCC = 2.7V
H TO L, CC_CDVCC = 3.6V
H TO L, CC_CDVCC = 2.7V
AVCC = 5V
VDRIVE = 3.3V
TA = 25°C
07
60
6-
0
21
Figure 21. Propagation Delay for Comparator C and Comparator D vs.
Overdrive Voltage for Various Supply Voltages
SUPPLY RIPPLE FREQUENCY (kHz)
P
S
RR
(
d
B)
–120
–115
–110
–105
–100
–95
–90
–85
–80
–75
0
200
400
600
800
1000
–70
VDRIVE = 5V
GAIN = 2
TA = 25°C
INTERNAL REFERENCE
100mV p-p SINE WAVE ON AVCC
AVCC DECOUPLED WITH
10F AND 100nF CAPACITORS
07
60
6-
0
22
Figure 22. Power Supply Rejection Ratio vs. Supply Ripple Frequency?
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