Datasheet

LTC6421-20
13
642120fb
TYPICAL APPLICATIONS
Test Circuit B, 4-Port Measurements
(Only the Signal-Path Connections Are Shown)
642120 F04b
–OUTA
+OUTA
+INA
0.1μF
0.1μF
PORT 1
(507)
1/2
AGILENT
E5071C
PORT 2
(507)
+
+
–
–
–INA
2007
R
OUT
12.57
R
F
10007
(B CHANNEL NOT SHOWN)
R
G
1007
R
F
10007
R
OUT
12.57
37.47
37.47
R
G
1007
+
+
–
–
0.1μF
0.1μF
PORT 3
(507)
1/2
AGILENT
E5071C
PORT 4
(507)
Parallel ADC Drivers to Reduce Wideband Noise
+
–
R5
49.9Ω
3.3V 3.3V
R3
10Ω
R4
10Ω
R7
49.9Ω
R8
49.9Ω
C6
2.2μF
V
OCM
R6
49.9Ω
1/2
LTC6421-20
1/2
LTC6421-20
V
IN
C5
12pF
C2
12pF
C3
12pF
642120 TA02
C1
0.1μF
C4
0.1μF
–3dB FILTER BANDWIDTH = 120MHz
LTC2208
V
CM