DC1662A - Schematic

5
4
3
2
1
REVISION HISTORY
VCC
ECO
REV
__
I+OUT
l-OUT
J4
J3
C25
OPT
APPROVED
PRODUCTION
SUNNY H.
DATE
01-27-2012
Q-OUT
Q+OUT
C24
OPT
DESCRIPTION
3
J5
J6
D
D
R9
100
C23
OPT
C29
1uF
R1
0
0805
C1
OPT
OPTIONAL
LOW PASS
FILTER
VCTRL
R4
0
0805
C4
OPT
L3
L4
0
0805
0
0805
C7
OPT
R8
OPT
R7
OPT
C26
OPT
OPTIONAL
LOW PASS
FILTER
C8
OPT
REF IP2I IP2Q DCOI DCOQ
GND
E7
C3
OPT
R14
100
C30
1uF
0
0805
C6
R6 OPT
OPT
R5
OPT
C22
1uF
L2
E1
E6
E2
E3
E4
C
E5
C10
0.1uF
11
12
3
C34
0.1uF
4
5
6
0 Ohm
J1
21
19
CMI
LO-
U1
IP2I
LO+
RF
GND
EN
L6
1.2pF
C17
OPT
20
VCAP
DCOI
7
C18
RF
-Q
DCOQ
C35
0.1uF
B
CMQ
GND
GND
GND
T1
4:1 XFMR
ANAREN
BD0826J50200A00
C36
1000pF
18
C12
L5
1.0pF
0 Ohm
LO
17
3
C28
OPT
16
15
C27
OPT
C37
1000pF
14
13
25
1
2
6
4
5
J2
C14
OPT
C13
5.1nH
EIP2
10
C11
0.1uF
12
9
+Q
2
EDC
8
VCC
7
LTC5585IUF
IP2Q
11
1
10
6
22
5
C33
0.1uF
-I
4
+I
2
3
24
1
23
C31
0.1uF
VBIAS
C32
0.1uF
GND
JP1
9
PT5
PT4
PT3
PT2
PT1
500 Ohm 500 Ohm 500 Ohm 500 Ohm 500 Ohm
REF
1.0 V
R2
R3
0
0
0805 0805
8
C
R13
100
C2
OPT
L1
0
0805
C5
OPT
VCTRL
R11
100
C21
1uF
C19
5.1nH
VCC
C9
OPT
0603
R16
OPT
EN
C15
1000pF
C16
4.7uF
0805
R15
1 Ohm
EDC
E8
V SUPPLY
E11
0805
4.95V - 5.45V
E13
E10
A
CUSTOMER NOTICE
2. INSTALL SHUNTS AS SHOWN.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
1. ALL RESISTORS ARE IN OHMS, 0402
ALL CAPACITORS ARE IN MICROFARADS, 0402
4
3
TECHNOLOGY
A.K..
SUNNY H.
TITLE: SCHEMATIC
SIZE
N/A
SCALE = NONE
2
DATE:
IC NO.
VCC SENSE
GND
E12
NOTE: UNLESS OTHERWISE SPECIFIED
B
EIP2
E9
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
WIDEBAND I/Q DEMODULATOR
With IIP2 and DC Offset Control
LTC5585IUF
REV.
3
DEMO CIRCUIT 1662A
Monday, February 13, 2012
SHEET 1
1
OF 1
A
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