Datasheet

MAX2371/MAX2373
LNAs with Step Attenuator and VGA
4 _______________________________________________________________________________________
Typical Operating Characteristics
(MAX2371/MAX2373 EV Kits, V
CC
= 2.775V, RX_EN = high, R
SET
= 1.1kΩ, LNA_I = high, T
A
= +25°C. For MAX2371, f
RF
= 150MHz;
for MAX2373, f
RF
= 900MHz, unless otherwise noted.)
GAIN vs. FREQUENCY
MAX2371 toc01
FREQUENCY (MHz)
GAIN (dB)
170160150140
-5
0
5
10
15
20
-10
130 180
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
RF_ATTN = LOW
RF_ATTN = HIGH
GAIN vs. V
AGC
MAX2371 toc02
V
AGC
(V)
GAIN (dB)
2.42.01.6
-50
-40
-30
-20
-10
0
10
20
-60
1.2 2.8
RF_ATTN = LOW
RF_ATTN = HIGH
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
IIP3 vs. V
AGC
MAX2371 toc03
V
AGC
(V)
IIP3 (dBm)
1.71.61.4 1.5
-10
-5
0
5
10
15
20
25
-15
1.3 1.8
RF_ATTN = LOW
RF_ATTN = HIGH
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
P
1dB
vs. V
AGC
MAX2371 toc04
V
AGC
(V)
P
1dB
(dBm)
2.72.21.7
-20.0
-15.0
-10.0
-5.0
0
5.0
10.0
-25.0
1.2
T
A
= +25°C
RF_ATTN = LOW
RF_ATTN = HIGH
T
A
= +85°C
T
A
= -40°C
NOISE FIGURE vs. V
AGC
MAX2371 toc05
V
AGC
(V)
NOSIE FIGURE (dB)
2.72.21.7
5
10
15
20
25
30
0
1.2
RF_ATTN = LOW
RF_ATTN = HIGH
S11, S22, S12 vs. FREQUENCY
MAX2371 toc06
FREQUENCY (MHz)
S11, S22, S12 (dB)
170160150140
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
-50
130 180
S22
S11
S12
RF_ATTN = LOW RF_ATTN = HIGH
S11, S22, S12 vs. V
AGC
MAX2371 toc07
V
AGC
(V)
S11, S22, S12 (dB)
2.72.21.7
-50
-40
-30
-20
-10
0
-60
1.2
S22
S11
S11
S12
RF_ATTN = HIGH
RF_ATTN = LOW
MAX2371