Datasheet

MAX2645
3.4GHz to 3.8GHz SiGe
Low-Noise Amplifier/PA Predriver
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AC ELECTRICAL CHARACTERISTICS—LNA (Low-Noise Figure Application Circuit)
(MAX2645 EV kit, V
CC
= GAIN = SHDN = +3.3V,R
BIAS
= 20kΩ ±1%, P
RFIN
= -20dBm, f
RFIN
= 3550MHz, Z
o
= 50Ω,
T
A
= +25°C, unless otherwise noted.)
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
Frequency Range (Note 2)
3400 3800
MHz
GAIN = V
CC
12.9 14.4 15.4
Gain (Note 3)
GAIN = GND
-11.8 -9.7 -8.0
dB
Gain Variation over Temperature T
A
= -40°C to +85°C, GAIN = V
CC
or GND (Note 4)
±0.3 ±0.7
dB
Gain Step
±24.1
dB
GAIN = V
CC
(Note 5) +4
Input Third-Order Intercept
GAIN = GND (Note 6)
+13
dBm
GAIN = V
CC
-5
Input 1dB Compression Point
GAIN = GND 0
dBm
GAIN = V
CC
(Notes 4, 7) 2.3 3.0
Noise Figure
GAIN = GND
15.5
dB
GAIN = V
CC
25
Reverse Isolation
GAIN = GND 19
dB
Gain Step Transition Time (Note 8) 1 µs
Turn-On/Turn-Off Time (Note 9) 0.5 µs
AC ELECTRICAL SPECIFICATIONS—LNA (High-Input IP3 Application Circuit)
(MAX2645 EV kit, V
CC
= GAIN = SHDN = +3.3V,R
BIAS
= 20kΩ ±1%, P
RFIN
= -20dBm, f
RFIN
= 3550MHz, Z
o
= 50Ω,
T
A
= +25°C, unless otherwise noted.)
PARAMETER CONDITIONS
MIN TYP MAX
UNITS
Frequency Range (Note 2)
3400 3800
MHz
GAIN = V
CC
14.9
Gain
GAIN = GND
-10.7
dB
Gain Variation over Temperature T
A
= -40°C to +85°C, GAIN = V
CC
or GND
±0.3
dB
Gain Step
25.6
dB
GAIN = V
CC
(Note 6)
+10.0
Input Third-Order Intercept
GAIN = GND (Note 7)
+15.5
dBm
GAIN = V
CC
-4
Input 1dB Compression Point
GAIN = GND 0
dBm
GAIN = V
CC
2.6
Noise Figure
GAIN = GND 16
dB
GAIN = V
CC
25
Reverse Isolation
GAIN = GND 19
dB