Rainbow Electronics MAX2645 User Manual
Page 3
MAX2645
3.4GHz to 3.8GHz SiGe
Low-Noise Amplifier/PA Predriver
_______________________________________________________________________________________
3
AC ELECTRICAL CHARACTERISTICS—LNA (Low-Noise Figure Application Circuit)
(MAX2645 EV kit, V
CC
= GAIN = SHDN = +3.3V,R
BIAS
= 20k
Ω ±1%, P
RFIN
= -20dBm, f
RFIN
= 3550MHz, Z
o
= 50
Ω,
T
A
= +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Frequency Range
(Note 1)
3400
3800
MHz
GAIN = V
CC
12.9
14.4
15.4
Gain (Note 2)
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 3)
±0.3
±0.7
dB
Gain Step
±24.1
dB
GAIN = V
CC
(Note 4)
+4
Input Third-Order Intercept
GAIN = GND (Note 5)
+13
dBm
GAIN = V
CC
-5
Input 1dB Compression Point
GAIN = GND
0
dBm
GAIN = V
CC
(Notes 3, 6)
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 7)
1
µs
Turn-On/Turn-Off Time
(Note 8)
0.5
µs
AC ELECTRICAL SPECIFICATIONS—LNA (High-Input IP3 Application Circuit)
(MAX2645 EV kit, V
CC
= GAIN = SHDN = +3.3V,R
BIAS
= 20k
Ω ±1%, P
RFIN
= -20dBm, f
RFIN
= 3550MHz, Z
o
= 50
Ω,
T
A
= +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Frequency Range
(Note 1)
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 5)
+10.0
Input Third-Order Intercept
GAIN = GND (Note 6)
+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