lt5521 Linear Technology Corporation, lt5521 Datasheet - Page 9

• Manufacturer Part Number: lt5521
• Description: Very High Linearity Active Mixer
• Manufacturer: Linear Technology Corporation

BLOCK DIAGRA
TEST CIRCUITS
50
IF
IN
C2
W
Z14
Table 1. Demonstration Board Bill of Materials
Z3
C6
Note 1: Tabulated values are used for characterization measurements.
Note 2: Components shown on the schematic are included for consistency with the demo board.
If no value is shown for the component, the site is unpopulated.
Note 3: T1 also M/A-COM ETC1-1-13 and Sprague Goodman GLSW4M202. These alternative transformers
have been measured and have similar performance.
C2, C4, C6
C1, C13
R1, R7
L1, L2
Z1, Z7
REF
C12
C11
Z14
Z3
T1
T2
C3
R8
T1
f
THIS COMPONENT CAN BE REPLACED BY PCB TRACE ON FINAL APPLICATION
IF
M/A-COM MABACT0010
M/A-COM ETC1.6-4-2-3
f
= 250MHz, f
LO
= 1.7GHz, V
Figure 1. Demonstration Board Schematic
110 , 1%
1
2
3
4
2.7nH
6.8pF
10pF
82pF
82pF
1nF
1 F
10k
0
0
GND
IN
IN
GND
LO
50
C13
17
R1
R7
Z7
OPT
Z1
OPT
+
–
RF
IN
EXPOSED
PAD
= 1.95GHz
CC
= 5V
BIAS
1
2
3
4
5
EN
3
GND
GND
IN
IN
GND
EN
EN
16
+
–
C1
16
5
GND
R8
f
IF
f
M/A-COM MABACT0010
LO
6
M/A-COM ETC1.6-4-2-3
V
EXPOSED
= 44MHz, f
L0
PAD (17)
V
LT5521
CC
15
= 1.001GHz, V
6
CC
15
LO
GND GND
110 , 1%
V
CC
120nH
150pF
10nH
3.9pF
27pF
14
7
7
1 F
1nF
1nF
10k
0
V
RF
OUT
OUT
CC
GND
GND
V
14
= 1.045GHz
CC
GND
13
8
+
–
CC
12
11
10
9
8
1, 2
= 5V
V
CC
3
OUT
OUT
13
GND
GND
GND
5521 BD
+
–
f
IF
f
12
11
10
M/A-COM MABACT0010
L1
C4
L2
LO
9
M/A-COM ETC1.6-4-2-3
= 250MHz, f
0.062"
= 1.7GHz, V
22.6 , 1%
0.017"
0.017"
100nH
2.7nH
6.8pF
10pF
82pF
82pF
5521 F01
1nF
1 F
10k
0
C11
RF
CC
V
= 1.95GHz
r
CC
= 3.3V
= 4.4
T2
3
RF
GND
DC
GND
C12
C3
RF
50
OUT
LT5521
9
5521f