User Manual

MAX2700/MAX2701
1.8GHz to 2.5GHz Direct Downconversion
Receivers
______________________________________________________________________________________ 13
-1
3
1
7
5
9
11
2.60 3.102.85 3.35
MIXER IIP3 vs. V
CC
vs. TEMPERATURE
MAX2701-32
V
CC
(V)
IIP3 (dBm)
T
A
= +85°C
T
A
= +25°C
T
A
= -45°C
DOUBLER ENABLED
0
20
10
40
30
50
60
2.60 3.102.85 3.35
MIXER IIP2 vs. V
CC
vs. TEMPERATURE
MAX2701-33
V
CC
(V)
IIP2 (dBm)
T
A
= -45°C
T
A
= +85°C
T
A
= +25°C
DOUBLER ENABLED
7
8
9
10
11
12
13
14
15
2100 2200 2300 2400 2500
DSB MIXER NOISE FIGURE
vs. FREQUENCY vs. TEMPERATURE
MAX2701-31
FREQUENCY (MHz)
NF (dB)
T
A
= +25°C
T
A
= -45°C
T
A
= +85°C
10
12
14
16
18
20
22
24
2.1 2.2 2.3 2.4 2.5
MIXER VOLTAGE GAIN vs. FREQUENCY
vs. LO POWER
MAX2701-30
FREQUENCY (GHz)
VOLTAGE GAIN (dB)
P
LO
= -16dBm TO -10dBm
DOUBLER ENABLED
2.0
1.5
1.0
0.5
0
2.1 2.32.2 2.4 2.5
φ ERROR vs. LO FREQUENCY
MAX2701-34
FREQUENCY (GHz)
φ ERROR (DEGREES)
DOUBLER ENABLED
DOUBLER DISABLED
15
17
16
19
18
21
20
22
MIXER VOLTAGE GAIN vs. FREQUENCY
vs. TEMPERATURE
MAX2701-29
FREQUENCY (GHz)
VOLTAGE GAIN (dB)
2.1 2.2 2.3 2.4 2.5
T
A
= -45°C
T
A
= +25°C
T
A
= +85°C
DOUBLER DISABLED
Typical Operating Characteristics (continued)
(MAX2700/MAX2701 EV kit (Figure 3), V
CC
= +3.0V, T
A
= +25°C, SHDN = GAIN_SET = V
CC
, X2_EN = GND, CEXT+ connected to
CEXT-, P
LO
= -13dBm, F
LO
= 980MHz (MAX2700) and 1200MHz (MAX2701), P
LNAIN
= -30dBm, P
RFIN
= -25dBm, LNAIN and RFIN
(single-ended input to balun) driven from 50Ω source, LNAOUT terminated into load; MIX_I, MIX_Q AC-coupled to 2kΩ load; IIN1+,
QIN1+, IIN2+, QIN2+ driven from 1.1kΩ AC-coupled source; IOUT1, QOUT1 AC-coupled to 2kΩ; IOUT2, QOUT2 AC-coupled to
100Ω; input to VGAs, 20mVp-p at 1MHz tone, set V
AGC
= 1.25V, unless otherwise noted.)
MAX2701