LTC559X View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC559X Datasheet PDF : 20 Pages
| |||
LTC5567
Typical Applications
300MHz RF Application with 70MHz Highpass IF Matching
LOIN
50Ω
370MHz ±40MHz
22pF
330pF
LTC5567 LO
RFIN
50Ω
300MHz ±40MHz
120pF
3.3nH
RF
22pF
EN
EN
LO
RF
BIAS
VCC
10nF
22pF
IF+
TC4-1W
4:1
1.1k 390nH
IF–
IADJ
1.1k
10nF
390nH
22pF
3.3V
89mA
IFOUT
50Ω
70MHz NOM
TYPICAL PERFORMANCE
(RF = 300MHz, IF = 70MHz, LO = 370MHz AT 0dBm)
GC = 0.6dB
IIP3 = 26.3dBm
SSB NF = 13.3dB
INPUT P1dB = 10.9dBm
5567 TA03a
Conversion Gain, IIP3 and NF
vs RF Frequency
28
26
24
IIP3
22
HIGH SIDE LO
20
PLO = 0dBm
18
IF = 70MHz
16
TC = 25°C
14
12
NF
10
8
6
4
2
GC
0
–2
260 280 300 320 340 360 380 400
RF FREQUENCY (MHz)
5567 TA03b
RF Isolation and LO leakage vs
RF and LO Frequency
70
0
65
–10
RF-LO
60
–20
55
RF-IF
50
–30
LO-IF
–40
45
–50
40
–60
LO-RF
35
–70
30
260
–80
300 340 380 420 460
RF/LO FREQUENCY (MHz)
5567 TA03c
RF, LO and IF Port Return Losses
10
5
0
–5
–10
– 15
IF
– 20
– 25
LO
RF
– 30
– 35
– 40
50 100 150 200 250 300 350 400 450
FREQUENCY (MHz)
5567 TA03d
5567f
18
Share Link: 