Datasheet

LTC6412
19
6412fa
Figure 3. Demo Board DC1464A Circuit Schematic. Test Circuit A
APPLICATIONS INFORMATION
V
CC
GND SHDN
LTC6412
EN GND V
CC
DECL1
GND
+IN
–IN
V
CM
V
CM
V
CC
V
CC
V
CC
V
CC
GND
1
2
C5
10nF
V
CC
V
CC
V
CC
C2 1000pF
C3 0.1μF
C2 1000pF
C4 0.1μF
C8
10nF
C13
1000pF
C14
0.1μF
C16
1000pF
C22
0.1μF
C15
0.1μF
C11
10nF
C17
0.1μF
CA1
1μF
CB1
4.7μF
NOTE:
[1] DO NOT PLACE
C12
1000pF
C21
0.1μF
+OUT
–OUT
C6
0.1μF
C9
[1]
C20
[1]
C7 0.1μF
V
CC
R17
100Ω
T1
1:1
3
1
2
3
5
R7
[1]
R9
0Ω
40dB
+IN
–IN
4
5
6
18
24 23 22 21 20 19
789101112
17
16
15
14
13
+OUT
–OUT
GND
DECL2
V
CC
GND +V
G
V
REF
–V
G
GND
••
V
CC
GND
3.00V TO 3.60V
T3
1:1
T4
1:1
13
2
1
4
5
C18 0.1μF
C19 0.1μF
2
3
5
R21
0Ω
4
TEST IN TEST OUT
6412 F03
•• ••
R15 0Ω
T2
4:1
1
2
3
5
4
R14 [1]
V
GAIN
+V
G
–V
G
R18 [1]
R20
100Ω
R19 0Ω
•
R5
1k
R6
1k
R3
[1]
R1
1k
R4
1k
R2
[1]
V
CC
SHDN EN
R22
0Ω
BALUN
T1, T3, T4
T2
PART NUMBER
TYCO MABA-007159
MINI-CIRCUITS TCM4-19+
Figure 4. 4-Port Analysis Schematic. Test Circuit B
V
CC
SHDN
EN
GND
V
CM
V
REF
DECL1
DECL2
+V
G
–V
G
+IN
10nF
10nF
10nF
3.3V
1nF
0.1μF
+OUT
I
DC
–OUT
6412 F04
0.1μF
0.1μF0.1μF
GAIN CONTROL
(– SLOPE MODE)
INPUT REF
PLANE
OUTPUT REF
PLANE
LTC6412
–IN
PORT 3
50Ω
PORT 4
50Ω
1/2 AGILENT
E5071C
PORT 1
50Ω
PORT 2
50Ω
1/2 AGILENT
E5071C
I
DC