Rainbow Electronics MAX19998 - Manual (Page 23)

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
______________________________________________________________________________________ 23
Typical Operating Characteristics (continued)
(Typical Application Circuit with tuning elements outlined in Table 1, V
CC = 5.0V, f RF = 2300MHz to 2900MHz, LO is high-side injected
for a 300MHz IF, P RF = -5dBm, P LO = 0dBm, T C = +25NC, unless otherwise noted.)
2LO LEAKAGE AT RF PORT vs.
LO FREQUENCY
MAX19998 toc130
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
3500 3000
-50
-40
-30
-20
-60
2500 4000
T C = +25NC
T C = -40NC
T C = +85NC
2LO LEAKAGE AT RF PORT vs.
LO FREQUENCY
MAX19998 toc131
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
3500 3000
-50
-40
-30
-20
-60
2500 4000
P LO = 0dBm
P LO = -3dBm
P LO = +3dBm
2LO LEAKAGE AT RF PORT vs.
LO FREQUENCY
MAX19998 toc132
LO FREQUENCY (MHz)
2LO LEAKAGE AT RF PORT (dBm)
3500 3000
-50
-40
-30
-20
-60
2500 4000
V CC = 5.0V V CC = 4.75V
V CC = 5.25V
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
2600 2450 2300 2900 2750
RF PORT RETURN LOSS vs.
RF FREQUENCY
MAX19998 toc133
30
20
10
0
40
P LO = -3dBm, 0dBm, +3dBm
f IF = 300MHz
IF PORT RETURN LOSS vs.
IF FREQUENCY
IF FREQUENCY (MHz)
IF PORT RETURN LOSS (dB)
410 320 230 140
40
30
20
10
0
50
50 500
MAX19998 toc13
4
f LO = 3000MHz
V CC = 4.75V, 5.0V, 5.25V
LO PORT RETURN LOSS (dB)
20
10
0
30
LO PORT RETURN LOSS vs.
LO FREQUENCY
MAX19998 toc13
5
LO FREQUENCY (MHz)
3650 3300 2950 2600 4000
P LO = 0dBm P LO = +3dBm
P LO = -3dBm
SUPPLY CURRENT vs.
TEMPERATURE (T
C
)
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
60 35 10 -15
210
220
230
240
250
200
-40 85
MAX19998 toc136
V CC = 4.75V
V CC = 5.0V
V CC = 5.25V