LNAs with Step Attenuator and VGA
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2371/MAX2373 EV Kits, V
= 2.65V to 3.3V, RX_EN = high, R
= 1.1kΩ, T = -40°C to +85°C. Typical values are at V
=
CC
CC
SET
A
2.775V; for MAX2371 f = 150MHz, for MAX2373 f = 850MHz to 940MHz; T = +25°C, unless otherwise noted.) (Note 1)
RF
RF
A
PARAMETER
CONDITIONS
MIN
TYP
1.8
5.0
11
MAX
2.2
UNITS
V
V
V
V
= 1.275V
= 1.575V
= 1.875V
= 2.175V
AGC
AGC
AGC
AGC
LNA_I = high, T
=
A
7.7
+25°C, V
= 2.775V,
CC
14.5
RF_ATTN = low
SSB Noise Figure vs. AGC
dB
20
LNA_I = low, T
=
A
+25°C, V
= 2.775V,
V
= 1.275V
2.1
2.6
CC
AGC
RF_ATTN = low
LNA_I = high
LNA_I = low
LNA_I = high
LNA_I = low
LNA_I = high
-21.5
-24
-3
19.5
-22
0
RF_ATTN = low,
V
< 1.8V
AGC
Input 1dB Compression Point
Input IP3 (Notes 4, 5)
dBm
dBm
RF_ATTN = high,
< 1.8V
V
AGC
-9
-6.5
-1
-5
RF_ATTN = low,
= V /2
MAX2371
MAX2373
-7
-4
V
AGC
CC
LNA_I = low
LNA_I = high
-12
-9
RF_ATTN = high,
= V /2 to 2.575V
9
13
dBm
dBm
V
AGC
CC
MAX2371
MAX2373
-10.5
-12.5
-8
RF_ATTN = low, LNA_I = high,
Input IP3 Over AGC Range
AGC RESPONSE
V
= V /2 to 1.80V
CC
AGC
-10.5
V
= 2.775V, RF_ATTN = low, V
= 1.3375V
CC
AGC
AGC Attenuation Range (Note 6)
35
45
dB
to 2.575V, T = +25°C
A
RF_ATTN = low, V
= 1.625V
32
24
40
33
47
41
AGC
AGC Slope Over Control Range
RF STEP ATTENUATOR
Gain Step
dB/V
RF_ATTN = high, V
= 1.625V
AGC
MAX2371
MAX2373
16.0
18.0
17.5
19.5
19.0
21.0
RF_ATTN = high to low,
LNA_I = high
dB
Note 1: Parameters over temperature and supply voltage range are guaranteed by design and characterization, unless otherwise noted.
Note 2: Operation outside these frequency bands is possible but has not been characterized. See Typical Operating Characteristics.
Note 3: Measured with external matching network.
Note 4: f
Note 5: f
= 150MHz, f
= 900MHz, f
= 150.1MHz, P = -30dBm for both tones (MAX2371).
IN1
IN1
IN2
IN2
IN
= 900.1MHz, P = -30dBm for both tones (MAX2373).
IN
Note 6: Parameters are guaranteed by production test.
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3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
