Datasheet

MAX2023
High-Dynamic-Range, Direct Up-/Downconversion
1500MHz to 2500MHz Quadrature Mod/Demod
8
MODULATOR LO LEAKAGE
vs. LO FREQUENCY
LO FREQUENCY (GHz)
LO LEAKAGE (dBm)
MAX2023 toc19
1.80 1.82 1.84 1.86 1.88 1.90
-100
-90
-80
-70
-60
-50
-40
P
LO
= +3dBm
P
LO
= -3dBm
P
LO
= 0dBm
P
RF
= -1dBm,
LO LEAKAGE NULLED
AT P
LO
= 0dBm
MODULATOR OUTPUT NOISE DENSITY
vs. OUTPUT POWER
OUTPUT POWER (dBm)
OUTPUT NOISE DENSITY (dBm/Hz)
MAX2023 toc20
-23 -18 -13 -8 -3 2 7 12
-180
-175
-170
-165
-160
-155
-150
T
C
= +85°C
T
C
= +25°C
T
C
= -40°C
MODULATOR OUTPUT NOISE DENSITY
vs. OUTPUT POWER
OUTPUT POWER (dBm)
OUTPUT NOISE DENSITY (dBm/Hz)
MAX2023 toc21
-23 -18 -13 -8 -3 2 7 12
-180
-175
-170
-165
-160
-155
-150
P
LO
= +3dBm
P
LO
= -3dBm
P
LO
= 0dBm
DEMODULATOR CONVERSION LOSS
vs. LO FREQUENCY
LO FREQUENCY (GHz)
CONVERSION LOSS (dB)
MAX2023 toc22
1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
T
C
= +85°C
T
C
= +25°C
T
C
= -40°C
DEMODULATOR INPUT IP3
vs. LO FREQUENCY
LO FREQUENCY (GHz)
INPUT IP3 (dBm)
MAX2023 toc23
1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3
25
27
29
31
33
35
37
39
41
43
45
P
LO
= +3dBm
f
1
= f
LO
+ 25MHz
f
2
= f
LO
+ 26MHz
P
LO
= -3dBm
P
LO
= 0dBm
DEMODULATOR INPUT IP3
vs. LO FREQUENCY
LO FREQUENCY (GHz)
INPUT IP3 (dBm)
MAX2023 toc24
1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3
25
27
29
31
33
35
37
39
41
43
45
T
C
= +85°C
T
C
= +25°C
T
C
= -40°C
f
1
= f
LO
+ 25MHz
f
2
= f
LO
+ 26MHz
MODULATOR OUTPUT POWER
vs. BASEBAND FREQUENCY
BASEBAND FREQUENCY (MHz)
OUTPUT POWER (dBm)
MAX2023 toc16
0 10203040506070
-15
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
f
LO
+ f
BB
f
LO
- f
BB
P
I/Q-COMBINED
= 0dBm
MODULATOR LO LEAKAGE
vs. LO FREQUENCY
LO FREQUENCY (GHz)
LO LEAKAGE (dBm)
MAX2023 toc17
1.80 1.82 1.84 1.86 1.88 1.90
-100
-90
-80
-70
-60
-50
-40
P
RF
= +5dBm
P
RF
= -40dBm
LO LEAKAGE NULLED
AT P
RF
= -1dBm
P
RF
= -7dBm
P
RF
= -1dBm
MODULATOR LO LEAKAGE
vs. LO FREQUENCY
LO FREQUENCY (GHz)
LO LEAKAGE (dBm)
MAX2023 toc18
1.80 1.82 1.84 1.86 1.88 1.90
-100
-90
-80
-70
-60
-50
-40
T
C
= -40°C
T
C
= +85°C
T
C
= +25°C
P
RF
= -1dBm,
LO LEAKAGE NULLED
AT T
A
= +25°C
Typical Operating Characteristics (continued)
(MAX2023 Typical Application Circuit , V
CC
= 4.75V to 5.25V, GND = 0V, I/Q differential inputs driven from a 100Ω DC-coupled source
(modulator), V
BBI
= V
BBQ
= 2.6V
P-P
differential (modulator), P
RF
= +6dBm (demodulator), I/Q differential output drives 50Ω differential load
(demodulator), 0V common-mode input/output, P
LO
= 0dBm, 1500MHz ≤ f
LO
≤ 2300MHz, 50Ω LO and RF system impedance, R1 = 432Ω,
R2 = 562Ω, R3 = 301Ω, T
C
= -40°C to +85°C. Typical values are at V
CC
= 5V, f
LO
= 1850MHz, T
C
= +25°C, unless otherwise noted.)