Rainbow Electronics MAX19998 - Manual (Page 9)

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
_______________________________________________________________________________________ 9
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 low-side injected
for a 300MHz IF, P RF = -5dBm, P LO = 0dBm, T C = +25NC, unless otherwise noted.)
3RF - 3LO RESPONSE
vs. RF FREQUENCY
MAX19998 toc10
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE (dBc)
3800 3600 3400 3200
65
75
85
55
3000 4000
P RF = -5dBm
T C = -40°C, +25°C, +85°C
3RF - 3LO RESPONSE
vs. RF FREQUENCY
MAX19998 toc11
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE (dBc)
3800 3600 3400 3200
65
75
85
55
3000 4000
P RF = -5dBm
P LO = -3dBm, 0dBm, +3dBm
3RF - 3LO RESPONSE
vs. RF FREQUENCY
MAX19998 toc12
RF FREQUENCY (MHz)
3RF - 3LO RESPONSE (dBc)
3800 3600 3400 3200
65
75
85
55
3000 4000
P RF = -5dBm
V CC = 4.75V, 5.0V, 5.25V
NOISE FIGURE vs. RF FREQUENCY
MAX19998 toc13
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
3800 3600 3400 3200
8
9
10
11
12
7
3000 4000
T
C
= -40°C
T C = +25°C
T C = +85°C
NOISE FIGURE vs. RF FREQUENCY
MAX19998 toc14
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
3800 3600 3400 3200
8
9
10
11
12
7
3000 4000
P LO = -3dBm, 0dBm, +3dBm
NOISE FIGURE vs. RF FREQUENCY
MAX19998 toc15
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
3800 3600 3400 3200
8
9
10
11
12
7
3000 4000
V CC = 4.75V, 5.0V, 5.25V
INPUT P 1dB vs. RF FREQUENCY
MAX19998 toc16
RF FREQUENCY (MHz)
INPUT
P
1dB
(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 toc17
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 toc18
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