LT5502 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT5502 Datasheet PDF : 12 Pages
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LT5502
TYPICAL APPLICATIO S
IOUT+ IOUT–
VCC2
QOUT+ QOUT–
R8
51.1k
R9
51.1k
C10
C13
J2
R7
49.9
1µF
6
7 +3
1µF
U2
IOUT
LT1809CS
4
–2
R6
2.55k C11
1µF
R10 C12
5.11k 1.8pF
J1
IFIN
T1
JTX-4-10T
1
6
R3
C5
240Ω
22nF
1:4
MINI-CIRCUIT
VCC2
1 = EN
2 = STBY
C23
1µF
R2
20k
R1
20k
SW1
C9
C24
C25
C20
1µF
10µF
10µF
1µF
VCC1
C1
C2
1µF
1nF
1
2
3
IOUT+
IOUT–
GND
4
5
VCC
GND
6 IF+
7 IF–
8 GND
9 GND
10 EN
11 STBY
12 IFt+
U1
LT5502
÷2
QOUT+
QOUT–
24
23
22
VCC 21
GND 20
GND
2XLO+
2XLO–
19
18
17
VCC 16
VCC 15
RSSI 14
GND
IFt–
13
L1
C8
IF INTERSTAGE R17
OPTIONAL CIRCUIT
C19
22nF
5502 F02
R14
51.1k
R15
51.1k
C14
1µF
R12
C15 2.55k
1µF
C3
1nF
3
7
U3
LT1809CS
2
4
C17
1µF R16
6
49.9
C16 R13
1.8pF 5.11k
T2
JTX-4-10T
R4
240Ω
6
1
RSSI
4:1
MINI-CIRCUIT
C18
1µF
C4
C7
1nF
1.8pF
J3
QOUT
J4
2XLO
Figure 3. Evaluation Circuit Schematic With I/Q Output Buffers
8
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