9
dc1774acf
DEMO MANUAL DC1774A-C
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
1.
A
LL
R
ES
IS
TO
RS
A
RE
IN
OHMS,
0402.
A
LL
C
AP
ACITORS
ARE
0402.
2. ALL DNC PINS ON U1 AR
E
FO
R
LI
NE
AR
U
SE
O
NL
Y.
NOTE: UNLESS OTHERWISE SPECI
FI
ED
CAL IN
CAL OUT
GND
+5V
OPT
IONAL CIRCUIT
-C
O
PT
100-300 MHz
-A
FREQ.
100-1200 MHz
400-1000 MHz
LTC6430IUF-15
ASSY
U1
ADT2-1T+
LTC6431IUF-15
T3, T4
-B
ADTL2-18
*
0 OHM
OPT
R13,R14,R17,R18
OPT
R3, R4
0 OHM
0 OHM
OPT
LTC6430IUF-15
J8
STUFF
STUFF
OPT
OPT
OPT
OPT
1008
1008
+IN
-IN
+OUT
-OUT
J10
OPT
STUFF
OPT
560nH
OPT
OPT
0.1uF
C23
0.1uF
C14,C15
1000pF, 0402
L2
OPT
OPT
-C
O
PT
1000pF, 0603
-A
C5
1000pF, 0603
1000pF, 0402
ASSY
C2,C4
62pF
OPT
C9
-B
62pF
R1
348
OPT
348
1000pF, 0402
560nH
OPT
TH
IS
IS A UNIVERSAL PCB, DESIGNED TO
ACCOMMODATE
MU
LT
IP
LE
V
ER
SI
O
N
S O
F T
H
E I
C
.
REFER TO THE SIMPLIFIED SCHEMATIC IN FIGURE
3 OF THE DEM
O
MANUAL.
JOHN C.
PRODUCTION
2
08-03-12
__
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
1
Tuesday, August 07, 2012
11
IF AMP/ADC DRIVER
KIM T.
JOHN C.
N/A
LTC643XIU
F F
A
M
IL
Y
DEMO CIRCUIT 1774A
SIZE
DAT
E:
IC NO
.
R
EV
.
SHEE
T
O
F
TITL
E:
APPROVALS
PCB D
ES
.
APP ENG
.
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ilp
itas, CA 95035
Phone: (408)432-1900
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C
ar
th
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B
lv
d.
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C
on
fidential-For Customer Use Only
C
U
ST
O
M
ER NOTICE
LI
N
EAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESI
GN A
CI
RCUI
T THAT ME
ET
S
CUSTOMER-
SUPPLI
ED SPECI
FI
C
ATI
O
NS;
HOWEVER,
IT
REMAI
N
S THE CUSTOMER'
S RESPONSI
B
IL
IT
Y
TO
VERI
FY P
R
O
PE
R
AND RELI
ABLE OPERATI
O
N I
N
THE ACTUAL
APPLI
CATI
O
N.
C
O
M
PO
N
EN
T
SU
B
ST
IT
U
TI
O
N
AND PRI
N
TED
CI
RCUI
T BOARD LAYOUT MAY SI
GNI
FI
CANTL
Y
A
FF
EC
T
C
IRCUI
T
PERFORMANCE
OR
RELI
A
B
IL
IT
Y.
C
O
N
TA
C
T L
IN
EA
R
TECHNOLOGY APPLI
CATI
O
NS ENGI
NEERI
N
G FOR
ASSI
STANCE.
TH
IS
C
IR
C
U
IT
IS
PROPRI
ETARY TO LI
NEAR TECHNOLOGY AND
SCHEMATIC
SUPPLI
ED FOR USE WI
TH LI
NEAR TECHNOLOGY PART
S.
SC
A
LE
=
NONE
www.linear.com
VCC
VCC
VCC
VCC
C5 1000pF
J7
SMA
R5 348
C11
1000pF
C23 0.1u
F
R19
OPT
0
L1 560nH
C13 1000pF
R17
*
0603
C18 1000pF
JP2 HD2X4-100
1
2
3
4
5
6
7
8
C4
1000pF
R14
*
0603
L11 OPT
C14 1000pF
J9
SMA
OPT
R13
*
0603
C9 62pF
JP3 HD2X4-100
1
2
3
4
5
6
7
8
C21 1000pF
T4
*
6
4
1
5
3
J11
+5V
C2
1000pF
R2 348
C19 1000pF
L22 OPT
E6
R18
*
0603
C16 1000pF
J5
SMA
J8
*
SMA
T1
SEE BOM
6
4
1
5
3
C8 62pF
C22 0.1u
F
C17
1000pF
J6
SMA
C10 62pF
R4
*
0603
C12 62pF
C15 1000pF
R1 348
T2
SEE BO
M
6
4
1
5
3
JP1
HD2X6-100
12
34
56
78
91
0
11
12
E3
U1
*
2
14
1
24
4
6
8
10
21
19
17
22
20
18
16
5
7
9
11
15
12
13
3
23
25
DNC
GND
DNC
+IN
DNC
DNC
GND
DNC
DNC
DNC
GND
VCC
DNC
+OUT
T_DIODE
DNC
-IN
VCC
DNC
DNC
DNC
-OUT
DNC
GND
GND
R3
*
0603
C1
1000pF
R6 348
J18
GND
T3
*
6
4
1
5
3
J10
*
SMA
C7
1000pF
C20 1000pF
L2 560nH
C3
1000pF
