High-Dynamic-Range, Direct Up-/Downconversion
1500MHz to 2500MHz Quadrature Mod/Demod
Typical Operating Characteristics
(MAX2023 Typical Application Circuit, V CC = 4.75V to 5.25V, GND = 0V, I/Q differential inputs driven from a 100 Ω DC-coupled source
(modulator), V BBI = V BBQ = 2.6V P-P differential (modulator), P RF = +6dBm (demodulator), I/Q differential output drives 50 Ω differential load
(demodulator), 0V common-mode input/output, P LO = 0dBm, 1500MHz ≤ f LO ≤ 2300MHz, 50 Ω LO and RF system impedance, R1 = 432 Ω ,
R2 = 562 Ω , R3 = 301 Ω , T C = -40°C to +85°C. Typical values are at V CC = 5V, f LO = 1850MHz, T C = +25°C, unless otherwise noted.)
MODULATOR SINGLE-SIDEBAND SUPPRESSION
MODULATOR SINGLE-SIDEBAND SUPPRESSION
400
SUPPLY CURRENT vs. TEMPERATURE (T C )
70
vs. LO FREQUENCY
70
vs. LO FREQUENCY
380
360
65
60
P LO = -3dBm
65
60
V CC = 5V
340
V CC = 5V
V CC = 5.25V
55
P LO = 0dBm
55
320
300
50
45
50
45
280
260
40
35
P LO = +3dBm
40
35
V CC = 4.75V
240
220
200
V CC = 4.75V
30
25
20
30
25
20
V CC = 5.25V
-40
-15
10 35
60
85
1.5
1.6
1.7 1.8 1.9 2.0 2.1
2.2
2.3
1.5
1.6
1.7 1.8 1.9 2.0 2.1
2.2
2.3
TEMPERATURE ( ° C)
MODULATOR SINGLE-SIDEBAND SUPPRESSION
vs. LO FREQUENCY
LO FREQUENCY (GHz)
MODULATOR OUTPUT IP3
vs. LO FREQUENCY
LO FREQUENCY (GHz)
MODULATOR OUTPUT IP3
vs. LO FREQUENCY
70
65
60
T C = +85 ° C
30
28
26
T C = +25°C
30
28
26
f 1 = 1.8MHz
f 2 = 1.9MHz
55
50
24
22
24
22
45
40
35
30
25
T C = -40°C
T C = +25°C
20
18
16
14
12
T C = -40°C
T C = +85°C
f 1 = 1.8MHz
f 2 = 1.9MHz
20
18
16
14
12
V CC = 4.75V, 5V, 5.25V
20
10
10
1.5
1.6
1.7 1.8 1.9 2.0 2.1
2.2
2.3
1.5
1.6
1.7 1.8 1.9 2.0 2.1
2.2
2.3
1.5
1.6
1.7 1.8 1.9 2.0 2.1
2.2
2.3
6
LO FREQUENCY (GHz)
LO FREQUENCY (GHz)
LO FREQUENCY (GHz)
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