AD9857AST Analog Devices Inc, AD9857AST Datasheet - Page 37
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AD9857AST
Manufacturer Part Number
AD9857AST
Description
IC QUADRATURE DGTL UPCONV 80LQFP
Manufacturer
Analog Devices Inc
Series
AD9857r
Datasheet
1.AD9857PCB.pdf
(40 pages)
Specifications of AD9857AST
Rohs Status
RoHS non-compliant
Function
Upconverter
Frequency
5MHz ~ 200MHz
Rf Type
HFC Cable Network
Package / Case
80-LQFP
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W8 W10 W9 W7
PARALLEL PORT
P1
DVDD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
1
CONNECTION
C29
10µF
C30
10µF
AVDD
GND
GND
GND
GND
C31
10µF
POWER
2
TB1
3
GND
10
W1
1
2
3
4
5
6
7
8
9
GND
AVDD
VCC
DVDD
C2
0.1µF
C9
0.1µF
C14
0.1µF
4
10
OUT_EN
D0
D1
D2
D3
D4
D5
D6
D7
GND
1
2
3
4
5
6
7
8
9
GND
GND
VCC
OUT_EN
D0
D1
D2
D3
D4
D5
D6
D7
GND
74HC574
74HC574
VCC
GND
U7
CLOCK
C3
0.1µF
C10
0.1µF
C15
0.1µF
U1
CLOCK
VCC
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
VCC
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
20
19
18
17
16
15
14
13
12
11
VCC
C4
0.1µF
C11
0.1µF
C16
0.1µF
20
19
18
17
16
15
14
13
12
11
VCC
C5
0.1µF
C12
0.1µF
C17
0.1µF
VCC
1
2
3
4
5
6
7
SN74HC14
GND
1A
1Y
2A
2Y
3A
3Y
GND
C6
0.1µF
C13
0.1µF
U2
VCC
6A
5A
4A
6Y
5Y
4Y
W13
14
13
12
11
10
9
8
C7
0.1µF
RBE
RBE
J8
C8
0.1µF
Figure 37. Schematic of AD9857 Evaluation PCB
1
2
3
4
5
6
7
GND
74HC125
EN1
D1
Q1
EN2
D2
Q2
GND
VCC
U3
VCC
EN4
EN3
Q4
Q3
D4
D3
14
13
12
11
10
9
8
U10
Rev. C| Page 37 of 40
J2
VCC
GND
GND
DVDD
GND
D13
D12
D11
D10
W5
R7
50Ω
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
J7
W11
R10
TxENABLE
0
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
21 22
D13
D12
D11
D10
D9
D8
D7
DVDD
DVDD
DVDD
DGND
DGND
DGND
D6
D5
D4
D3
D2
D1
D0
R8
TFORMCT
3
2
1
0
CIC TEST POINT
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
J1
4
5
6
J6
W12
W2
50Ω
CLOCK INPUT
R12
W3
J3
50Ω
GND
R9
0.01µF
C1
2000Ω
R1
AD9857
C25
22pF
68nH
33pF
C22
L1
U5
2
3
MC100LEVL16
LOW-PASS FILTER
SDIO
SDIO
SYNCIO
PS1
PSO
CS
SCLK
82.5MHz ELLIPTIC
D
D
100nH
C26
56pF
15pF
GND
C23
L2
5 4 8
U6
RESET
DPD
120nH
C27
68pF
5.6pF
Q
Q
C24
L3
7
6
DIFF_CLKEN
50Ω
PLL_FILTER
R3
DAC_RSET
50V
R2
C28
47pF
DAC_BP
AGND
AGND
AGND
AGND
AGND
AGND
AVDD
AVDD
AVDD
AVDD
IOUT
IOUT
J4
GND
GND
VCC
GND
NC
NC
NC
NC
GND
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
AVDD
0.01µF
C19
AVDD
DVDD
GND
AD9857
R4
1.3kΩ
C20
0.01µF
VCC
GND
3.9kΩ
3.9kΩ
R5
R6
W4
W6
GND
GND