LTC5577_15 Datasheet, PDF (18/20 Pages) Linear Technology – 300MHz to 6GHz High Signal Level Active Downconverting Mixer

LTC5577
Typical Applications
700MHz to 4GHz Wideband RF Application
100Ω DIFFERENTIAL LOAD
50Ω
50Ω
IF ⁺
IF ^–
50Ω
50Ω
C7
C8
1nF
1nF
L1 560nH
L2 560nH
R1 115Ω
R2 115Ω
RF_IN
700MHz
TO 4GHz
C3
3.9pF
L4
9.5nH
16
GND
1 GND
2 RF
C4
1pF
3 NC
DC2070A
EVAL BOARD
4 GND
EN
5
EN
C2
1nF
15
14
IF⁺
IF^–
LTC5577
17
GND
13
GND
TEMP 12
NC 11
LO 10
C3
2.7pF
GND 9
V_CC
V_CC
IADJ
6
7
8
C1
C9
1nF
1µF
L7
15nH
LO_IN
820MHz
TO 4.3GHz
V_CC
3.3V
5577 TA02a
Conversion Gain and IIP3
vs RF Input Frequency
34
7
32 IIP3
6
30
5
28
HIGH LOW
4
SIDE SIDE
26
LO LO
3
IF = 153MHz
24
P_LO = 0dBm 2
T_C = 25°C
22
1
20
LOW SIDE AND
G_{C 0}
HIGH SIDE LO
18
–1
0.7 1.0 1.3 1.6 1.9 2.2 2.5 2.8 3.1 3.4 3.7 4.0
RF FREQUENCY (GHz)
5577 TA02b
RF and LO Input Return Loss
0
–5
–10
LO
–15
RF
–20
–25
0.2 0.7 1.2 1.7 2.2 2.7 3.2 3.7 4.2 4.7
RF/LO FREQUENCY (GHz)
5577 TA02c
5577f
18
For more information www.linear.com/LTC5577