Rainbow Electronics MAX19998 - Manual (Page 21)

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
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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.)
3LO - 3RF RESPONSE
vs. RF FREQUENCY
MAX19998 toc112
RF FREQUENCY (MHz)
3LO - 3RF RESPONSE (dBc)
2750 2600 2450
65
75
85
95
55
2300 2900
P RF = -5dBm
T C = +25NC
T C = +85NC
T C = -40NC
3LO - 3RF RESPONSE
vs. RF FREQUENCY
MAX19998 toc113
RF FREQUENCY (MHz)
3LO - 3RF RESPONSE (dBc)
2750 2600 2450
65
75
85
95
55
2300 2900
P RF = -5dBm
P LO = -3dBm, 0dBm, +3dBm
3LO - 3RF RESPONSE
vs. RF FREQUENCY
MAX19998 toc114
RF FREQUENCY (MHz)
3LO - 3RF RESPONSE (dBc)
2750 2600 2450
65
75
85
95
55
2300 2900
P RF = -5dBm
V CC = 4.75V, 5.0V, 5.25V
NOISE FIGURE vs. RF FREQUENCY
MAX19998 toc115
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
9
10
11
12
13
8
2750 2600 2450 2300 2900
T C = +85NC
T C = +25NC
T C = -40NC
NOISE FIGURE vs. RF FREQUENCY
MAX19998 toc116
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
9
10
11
12
13
8
2750 2600 2450 2300 2900
P LO = -3dBm, 0dBm, +3dBm
NOISE FIGURE vs. RF FREQUENCY
MAX19998 toc117
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
9
10
11
12
13
8
2750 2600 2450 2300 2900
V CC = 4.75V
V CC = 5.0V
V CC = 5.25V
INPUT P 1dB vs. RF FREQUENCY
MAX19998 toc118
RF FREQUENCY (MHz)
INPUT
P
1d
B
(dBm)
10
11
12
13
9
2750 2600 2450 2300 2900
T C = -40NC
T C = +85NC
T C = +25NC
INPUT P 1dB vs. RF FREQUENCY
MAX19998 toc119
RF FREQUENCY (MHz)
INPUT
P
1d
B
(dBm)
10
11
12
13
9
2750 2600 2450 2300 2900
P LO = -3dBm, 0dBm, +3dBm
INPUT P 1dB vs. RF FREQUENCY
MAX19998 toc120
RF FREQUENCY (MHz)
INPUT
P
1d
B
(dBm)
10
11
12
13
9
2750 2600 2450 2300 2900
V CC = 4.75V
V CC = 5.0V
V CC = 5.25V