DC333A - Schematic

5
4
3
2
1
VCC2
C9 1.0UF
7
E1
1. ALL RESISTORS ARE IN OHMS.
D
R8 51.1K
C10 1.0UF
2. THERE ARE TWO ASSEMBLY VERSIONS FOR THE BOARD:
3
+
2
-
E2
6
C11 1.0UF
R6
2.55K
R10
C12
3. POPULATED UPON SPECIFIC CUSTOMER REQUEST FOR
ADDITIONAL IF FILTERING.
J2
IOUT
1
C13
1.0UF
D
R7
49.9
4
VERSION -A: C21, C22 AND C6 ARE NOT LOADED
AND R3=241 OHMS.
VERSION -B: T1 IS NOT LOADED AND R3 IS 68 OHM.
C24
10UF 10V
U2
LT1809CS8
2
3
4
5
NOTES: UNLESS OTHERWISE SPECIFIED
R9 51.1K
5.11K
E5
VCC2
1.0PF
VCC2
C20 1.0UF
E6
E7
R14
VCC1
51.1K
R15 51.1K
7
C14 1.0UF
1NF
U1
2
SEE NOTES FOR ASSEMBLY
3
22NF
4
C5
22NF
T1
1
1
5
4
3
2
J1
IFIN
6
2
5
3
4
5
6
R3
SEE NOTE 2
7
8
JTX-4-10T
C22
22NF
C6
22NF
-
6
VCC2
9
R1
R2
B
20K
20K
C23
1.0UF
10
11
12
IOUT+
QOUT+
IOUT-
QOUT-
VEE5
VCC3
VCC1
VEE3
VEE4
VEE2
IFIN+
2XLO+
IFIN-
2XLO-
VEE1
VCC2
VEE6
VCCR
EN
RSSI
STBY
VEE7
IFT+
IFT-
24
C15 1.0UF R12 2.55K
R13
23
22
21
C16
J3
QOUT
1
C17
1.0UF
1.0UF
1
C21
+
2
R16
49.9
C
4
C1
C
3
2
3
4
5
C2
C25
10UF 10V
U3
LT1809CS8
5.11K
1.0PF
C3 1NF
20
4
T2
3
J4
2XLO
1
19
R4
241
18
5
2
6
17
C18
16
C4
1.0UF
2
3
4
5
E4
VCC1
1
JTX-4-10T
1NF
E3
RSSI
15
B
14
C7
1.8PF
13
E8
GND
LT5502GN
SW1
1
2
4
3
DM02
R17
L1
C8
241
22NH
TZC03
C19
22NF
OPTIONAL
CIRCUIT
SEE NOTE 3
LINEAR TECHNOLOGY CORP
LTC CONFIDENTIAL-FOR CUSTOMER USE ONLY
A
A
1630 McCARTHY BLVD. MILPITAS, CA 95035
PH. (408) 954-8400 FAX (408) 434-0507
Title
400MHZ I/Q DEMODULATOR
Size
Document Number
Wednesday, March 14, 2001
Date:
5
4
3
Rev
DC333A-2*LT5502GN
A
2
Sheet
1
1
of
1
A
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