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AD8331 Datasheet(PDF) 28 Page - Analog Devices

Part # AD8331
Description  Ultralow Noise VGAs with Preamplifier and Programmable RIN
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD8331 Datasheet(HTML) 28 Page - Analog Devices

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AD8331/AD8332
Rev. C | Page 28 of 32
VREF
VIN+_A
VIN –_A
VIN –_B
VIN+_B
MUX_SELECT
1
2
3
17
AVDD
62
SHARED_REF
6
7
REFT_A
REFB_A
SENSE
11
10
REFT_B
REFB_B
14
15
CLK_A
18
CLK_B
63
DCS
19
DFS
20
PDWN_B
PDWN_A
60
21
OEB_B
22
16
4
13
AGND
AGND
64
12
5
AVDD
AVDD
AVDD
8
9
AGND
AGND
D5_B
D4_B
D3_B
DRGND
D2_B
D1_B
D0_B
DNC
DNC
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
DRVDD
D10_A
D11_A
OTRA_A
D11_A(MSB)
DRGND
D8_A
DRVDD
D7_A
D6_A
D5_A
D4_A
D3_A
D2_A
D1_A
D0_A
DRVDD
D10_A
DRGND
OTRB_B
61
D9_A
59
58
57
56
55
54
53
OTR_A
D9_A
D8_A
D6_A
D7_A
D5_A
D4_A
D3_A
D2_A
D1_A
D0_A
DNC
DNC
D4_B
D3_B
D2_B
D1_B
D0_B
DNC
DNC
OTR_B
D11_B
D10_B
D9_B
D8_B
D7_B
D6_B
D5_B
20MHz
ADCLK
+3.3VCLK
ADCLK
+3.3VAVDD
VIN–B
VIN+B
+
+3.3VADDIG
SG-636PCE
1
4
3
2
U5
74VHC04
+
+
TP 9
TP 12
4
31
2
12
13
10
11
U5
74VHC04
U5
74VHC04
U5
74VHC04
U5
74VHC04
U5
74VHC04
SPARES
8
9
6
5
TP 13
JP 1
3
2
1
VDD
OUT
GND
OE
JP 4
S2
EXT CLOCK
+
JP 11
JP 3
JP 2
SHARED
REF
+3.3VADDIG
Y
D10_B
D9_B
D8_B
D7_B
D6_B
D11_B(MSB)
DNC
DNC
OEB_A
EXT
INT
VIN+_A
VIN–_A
N
DATA
CLK
VREF
C11
10
µF
6.3V
C14
0.1
µF
C23
0.1
µF
C25
1nF
R14
4.7k
Ω
R11
100
Ω
R10
0
Ω
R15
0
Ω
C22
0.1
µF
C21
1nF
C86
0.1
µF
C47
10
µF
6.3V
ADCLK
C2
10
µF
6.3V
C18
1nF
C17
0.1
µF
C52
10nF
C57
10nF
C61
18pF
C40
0.1
µF
R5
33
Ω
R6
33
Ω
R4
1.5k
Ω
R12
1.5k
Ω
1.5k
Ω
1.5k
Ω
C12
10
µF
6.3V
R9
0
Ω
R8
33
Ω
R7
33
Ω
C19
1nF
C20
0.1
µF
C63
0.1
µF
C26
0.1
µF
C24
1nF
C33
10
µF
6.3V
C38
0.1
µF
C16
0.1
µF
C62
18pF
C15
1nF
C35
0.1
µF
C36
0.1
µF
C37
0.1
µF
R20
4.7k
Ω
R17
49.9
Ω
R41
4.7k
Ω
+3.3VCLK
R19
499
Ω
R16
5k
Ω
R18
499
Ω
+
+3.3VADDIG
3
2
1
C32
0.1
µF
C39
10
µF
C34
10
µF
6.3V
C44
1
µF
C31
0.1
µF
C30
0.1
µF
C29
0.1
µF
C1
0.1
µF
OUT
VR1
ADP3339AKC-3.3
L2
120nH FB
L3
120nH FB
L4
120nH FB
L5
120nH FB
IN
OUT
GND
31
2
TAB
+
+5V
C13
1nF
+3.3VCLK
+3.3VADDIG
+3.3VAVDD
+3.3VDVDD
U6
Figure 77. Converter Schematic



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