Rainbow Electronics MAX2022 - Manual (Page 7)

MAX2022
High-Dynamic-Range, Direct Upconversion
1500MHz to 2500MHz Quadrature Modulator
_______________________________________________________________________________________ 7
LO LEAKAGE vs. P RF WITH
LO LEAKAGE NULLED AT SPECIFIC P RF
MAX2022 toc28
OUTPUT POWER P RF (dBm)
LO LEAKAGE (dBm)
-20 -30 -25 -15 -35
-88
-86
-84
-82
-80
-78
-76
-74
-72
-70
-68
-90
-40 -10
f LO = 1960MHz
NULLED AT -10dBm
NULLED AT -14dBm,
-18dBm, -22dBm
LO LEAKAGE vs. P RF WITH
LO LEAKAGE NULLED AT SPECIFIC P RF
MAX2022 toc29
OUTPUT POWER P RF (dBm)
LO LEAKAGE (dBm)
-20 -30 -25 -15 -35
-88
-86
-84
-82
-80
-78
-76
-74
-72
-70
-68
-90
-40 -10
f LO = 2140Hz
NULLED AT -10dBm
NULLED AT -14dBm,
-18dBm, -22dBm
LO FREQUENCY (GHz)
2.05 2.00 1.95 1.90
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
1.85 2.10
LO LEAKAGE vs. f LO WITH
LO LEAKAGE NULLED AT SPECIFIC P RF
LO LEAKAGE (dBm)
f LO = 1960MHz, NULLED AT -10dBm P RF
MAX2022 toc30
LO FREQUENCY (GHz)
2.20 2.15 2.10 2.05
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
2.00 2.25
LO LEAKAGE vs. f LO WITH
LO LEAKAGE NULLED AT SPECIFIC P RF
LO LEAKAGE (dBm)
f LO = 2140MHz, NULLED AT -10dBm P RF
MAX2022 toc31
LO LEAKAGE vs. DIFFERENTIAL
DC OFFSET ON Q-SIDE
MAX2022 toc32
DC DIFFERENTIAL OFFSET ON Q-SIDE (mV)
LO LEAKAGE (dBm)
-9 -10 -11 -12 -13 -14
-70
-60
-50
-40
-80
-15 -8
P RF = -18dBm, I-SIDE NULLED
f LO = 2140MHz f
LO = 1960MHz
SIDEBAND SUPRESSION vs. P RF
MAX2022 toc33
MODULATOR P OUT (dBm)
SIDEBAND SUPPRESSION (dB)
-15 -20 -25
10
20
40
30
50
60
70
0
-30 -10
f
BB1
= 1.8MHz, f
BB2
= 9MHz, f
LO
= 1960MHz,
1.8MHz BASEBAND TONE NULLED AT
P
RF = -20dBm
1.8MHz
9MHz
SIDEBAND SUPRESSION vs. P RF
MAX2022 toc34
MODULATOR P OUT (dBm)
SIDEBAND SUPPRESSION (dB)
-15 -20 -25
10
20
30
40
50
60
70
0
-30 -10
f BB1 = 1.8MHz, f BB2 = 9MHz, f LO = 2140MHz,
1.8MHz BASEBAND TONE NULLED AT
P
RF = -20dBm
1.8MHz
9MHz
RF PORT RETURN LOSS (dB) -15
-10
-5
0
-20
RF PORT RETURN LOSS
vs. LO FREQUENCY
MAX2022 toc35
LO FREQUENCY (GHz)
2.3 2.1 1.9 1.7 1.5 2.5
V CC = 4.75V, 5.0V, 5.25V
-25
-20
-15
-10
-5
0
-30
LO PORT RETURN LOSS (dB)
LO PORT RETURN LOSS
vs. LO FREQUENCY
MAX2022 toc36
LO FREQUENCY (GHz)
2.3 2.1 1.9 1.7 1.5 2.5
V CC = 4.75V, 5.0V, 5.25V
Typical Operating Characteristics (continued)
(MAX2022 Typical Application Circuit, 50 Ω LO input, R1 = 432Ω, R2 = 562Ω, R3 = 301Ω, V
CC
= +5V, P
LO
= 0dBm, V
IFI
= V
IFQ
=
109mV P-P differential, f IQ = 1MHz, I/Q differential inputs driven from a 100 Ω DC-coupled source, common-mode input from 0V, T
C =
+25°C, unless otherwise noted.)