Rainbow Electronics MAX19998 - Manual (Page 17)

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 = 3100MHz to 3900MHz, 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 toc78
RF FREQUENCY (MHz)
3LO - 3RF RESPONSE (dBc)
3800 3600 3400 3200
65
75
85
95
55
3000 4000
T C = -40°C
T C = +25°C
T C = +85°C
P RF = -5dBm
3LO - 3RF RESPONSE
vs. RF FREQUENCY
MAX19998 toc79
RF FREQUENCY (MHz)
3LO - 3RF RESPONSE (dBc)
3800 3600 3400 3200
65
75
85
95
55
3000 4000
P RF = -5dBm
P LO = -3dBm, 0dBm, +3dBm
3LO - 3RF RESPONSE
vs. RF FREQUENCY
MAX19998 toc80
RF FREQUENCY (MHz)
3LO - 3RF RESPONSE (dBc)
3800 3600 3400 3200
65
75
85
95
55
3000 4000
P RF = -5dBm
V CC = 4.75V, 5.0V, 5.25V
NOISE FIGURE vs. RF FREQUENCY
MAX19998 toc81
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
3525 3350 3175
8
9
10
11
12
7
3000 3700
T C = -40°C
T C = +25°C
T C = +85°C
NOISE FIGURE vs. RF FREQUENCY
MAX19998 toc82
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
3525 3350 3175
8
9
10
11
12
7
3000 3700
P LO = -3dBm, 0dBm, +3dBm
NOISE FIGURE vs. RF FREQUENCY
MAX19998 toc83
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
3525 3350 3175
8
9
10
11
12
7
3000 3700
V CC = 4.75V, 5.0V, 5.25V
INPUT P
1dB
vs. RF FREQUENCY
MAX19998 toc84
RF FREQUENCY (MHz)
INPUT
P
1d
B
(dBm)
3800 3600 3400 3200
10
11
12
13
9
3000 4000
T C = -40°C
T C = +25°C
T
C
= +85°C
INPUT P
1dB
vs. RF FREQUENCY
MAX19998 toc85
RF FREQUENCY (MHz)
INPUT
P
1d
B
(dBm)
3800 3600 3400 3200
10
11
12
13
9
3000 4000
P LO = -3dBm, 0dBm, +3dBm
INPUT P
1dB
vs. RF FREQUENCY
MAX19998 toc86
RF FREQUENCY (MHz)
INPUT
P
1d
B
(dBm)
3800 3600 3400 3200
10
11
12
13
9
3000 4000
V CC = 4.75V
V CC = 5.0V
V CC = 5.25V