Datasheet

MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
10
Maxim Integrated
CONVERSION LOSS vs. RF FREQUENCY
MAX2021 toc35
RF FREQUENCY (MHz)
CONVERSION LOSS (dB)
830785740695
8
9
10
11
12
7
650 875
f
LO
= 965MHz
I/Q GAIN MISMATCH vs. IF FREQUENCY
MAX2021 toc36
IF FREQUENCY (MHz)
GAIN MISMATCH (dB)
270225180135
-0.05
0
0.05
0.10
-0.10
90 315
f
LO
= 965MHz
I/Q PHASE MISMATCH vs. IF FREQUENCY
MAX2021 toc37
IF FREQUENCY (MHz)
PHASE MISMATCH (DEG)
270225180135
-0.5
0
0.5
1.0
1.5
2.0
-1.0
90 315
f
LO
= 965MHz
INPUT IP3 vs. RF FREQUENCY
MAX2021 toc38
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
875800725
33
34
35
36
37
38
32
650 950
P
RF
= 0dBm/TONE
f
LO
= 965MHz
1MHz TONE DELTA
45MHz TONE DELTA
INPUT IP2 vs. RF FREQUENCY
MAX2021 toc39
RF FREQUENCY (MHz)
INPUT IP2 (dBm)
875800725
65
70
75
80
85
90
60
650 950
1MHz TONE DELTA
45MHz TONE DELTA
P
RF
= 0dBm/TONE
f
LO
= 965MHz
Typical Operating Characteristics
(MAX2021 Typical Application Circuit , V
CC
= 5.0V, GND = 0V, I/Q outputs are recombined using network shown in Figure 5. Losses of
combining network not included in measurements. P
RF
= 0dBm, P
LO
= 0dBm, f
LO
= 965MHz, f
IF
= f
LO
- f
RF
, 50Ω LO and RF system
impedance, R1 = 432Ω, R2 = 619Ω, R3 = 332Ω, T
A
= +25°C, unless otherwise noted.)
DEMODULATOR (FIXED LO)