High-Linearity, 650MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
Typical Operating Characteristics
(Typical Application Circuit, optimized for the 800MHz/900MHz cellular band (see Table 1) , C1 = 82pF, C5 = 2pF, L1 and C4 not used,
V CC = 5.0V, P LO = 0dBm, P RF = 0dBm, f LO > f RF , f IF = 160MHz, T C = +25°C, unless otherwise noted.)
Downconverter Curves
10
9
CONVERSION LOSS vs. RF FREQUENCY
10
9
CONVERSION LOSS vs. RF FREQUENCY
10
9
CONVERSION LOSS vs. RF FREQUENCY
8
T C = +85 ° C
T C = -25 ° C
T C = +25 ° C
8
P LO = -3dBm, 0dBm, +3dBm
8
V CC = 4.75V, 5.0V, 5.25V
7
7
7
6
5
T C = -40 ° C
6
5
6
5
800
850
900
950
1000
800
850
900
950
1000
800
850
900
950
1000
RF FREQUENCY (MHz)
INPUT IP3 vs. RF FREQUENCY
RF FREQUENCY (MHz)
INPUT IP3 vs. RF FREQUENCY
RF FREQUENCY (MHz)
INPUT IP3 vs. RF FREQUENCY
40
38
P RF = 0dBm/TONE
T C = +85 ° C, +25 ° C
40
38
P RF = 0dBm/TONE
P LO = +3dBm
P LO = 0dBm
40
38
P RF = 0dBm/TONE
V CC = 5.25V
36
36
36
34
T C = -40 ° C
34
P LO = -3dBm
34
V CC = 4.75V
V CC = 5.0V
32
30
28
26
T C = -25 ° C
32
30
28
26
32
30
28
26
800
850 900 950
1000
800
850 900 950
1000
800
850 900 950
1000
10
9
8
7
RF FREQUENCY (MHz)
NOISE FIGURE vs. RF FREQUENCY
T C = +25 ° C
T C = +85 ° C
10
9
8
7
RF FREQUENCY (MHz)
NOISE FIGURE vs. RF FREQUENCY
P LO = -3dBm, 0dBm, +3dBm
10
9
8
7
RF FREQUENCY (MHz)
NOISE FIGURE vs. RF FREQUENCY
V CC = 4.75V, 5.0V, 5.25V
6
5
T C = -40 ° C
T C = -25 ° C
6
5
6
5
800
850
900
950
1000
800
850
900
950
1000
800
850
900
950
1000
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
_______________________________________________________________________________________
5
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