Rainbow Electronics MAX19998 - Manual (Page 12)

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
12 _____________________________________________________________________________________
Typical Operating Characteristics (continued)
(Typical Application Circuit with tuning elements outlined in Table 1, V
CC = 3.3V, f RF = 3100MHz to 3900MHz, LO is low-side injected
for a 300MHz IF, P RF = -5dBm, P LO = 0dBm, T C = +25NC, unless otherwise noted.)
CONVERSION GAIN vs. RF FREQUENCY
MAX19998 toc35
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
3800 3600 3400 3200
7
8
9
10
6
3000 4000
T
C
= -40NC
T C = +25NC
T C = +85NC
V
CC
= 3.3V
CONVERSION GAIN vs. RF FREQUENCY
MAX19998 toc36
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
3800 3600 3400 3200
7
8
9
10
6
3000 4000
P LO = -3dBm, 0dBm, +3dBm
V
CC
= 3.3V
CONVERSION GAIN vs. RF FREQUENCY
MAX19998 toc37
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
3800 3600 3400 3200
7
8
9
10
6
3000 4000
V CC = 3.0V, 3.3V, 3.6V
INPUT IP3 vs. RF FREQUENCY
MAX19998 toc38
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
3800 3600 3400 3200
19
20
21
22
18
3000 4000
T C = +85NC
T C = +25NC
T C = -40NC
V CC = 3.3V
P RF = -5dBm/TONE
INPUT IP3 vs. RF FREQUENCY
MAX19998 toc39
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
3800 3600 3400 3200
19
20
21
22
18
3000 4000
P LO = -3dBm, 0dBm, +3dBm
V CC = 3.3V
P RF = -5dBm/TONE
INPUT IP3 vs. RF FREQUENCY
MAX19998 toc40
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
3800 3600 3400 3200
19
20
21
22
18
3000 4000
V CC = 3.6V V CC = 3.3V
P RF = -5dBm/TONE
V CC = 3.0V
2RF - 2LO RESPONSE
vs. RF FREQUENCY
RF FREQUENCY (MHz)
2RF - 2LO RESPONSE (dBc)
50
60
70
80
90
40
MAX19998 toc41
3800 3600 3400 3200 3000 4000
V CC = 3.3V
P RF = -5dBm
T C = +85NC
T C = -40NC
T C = +25NC
2RF - 2LO RESPONSE
vs. RF FREQUENCY
RF FREQUENCY (MHz)
2RF - 2LO RESPONSE (dBc)
50
60
70
80
90
40
MAX19998 toc42
3800 3600 3400 3200 3000 4000
V CC = 3.3V
P RF = -5dBm
P LO = +3dBm
P LO = 0dBm
P LO = -3dBm
2RF - 2LO RESPONSE
vs. RF FREQUENCY
RF FREQUENCY (MHz)
2RF - 2LO RESPONSE (dBc)
50
60
70
80
90
40
MAX19998 toc43
3800 3600 3400 3200 3000 4000
P RF = -5dBm
V CC = 3.0V, 3.3V, 3.6V