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VHF-to-Microwave, +3V,
General-Purpose Amplifiers
____________________________Typical Operating Characteristics (continued)
(V CC = +3V, V SHDN = V CC (MAX2631/MAX2633), Z 0 = 50 Ω , f IN = 900MHz, R BIAS = 10k Ω (MAX2632/MAX2633), T A = +25°C, unless
otherwise noted.)
MAX2631/MAX2633
15
12
MAX2632/MAX2633
SUPPLY CURRENT vs. R BIAS
0.05
0.04
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
5:1
4:1
VOLTAGE STANDING-WAVE
RATIO vs. FREQUENCY
9
6
V CC = 3V
V CC = 5V
0.03
0.02
V CC = 5.5V
3:1
OUT
V CC = 3.0V
3
V CC = 4V
0.01
V CC = 2.7V
2:1
IN
0
0
1:1
1
10
100
-40
-20
0
20
40
60
80
0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
R BIAS (k Ω )
TEMPERATURE (°C)
FREQUENCY (GHz)
______________________________________________________________Pin Description
PIN
NAME
FUNCTION
MAX2630
MAX2631
MAX2632
MAX2633
3
2
1
5
2
3
5
2
3
6
2
3
IN
GND
OUT
Amplifier Input. Use a series blocking capacitor with less than
3 Ω reactance at your lowest operating frequency.
Ground Connection. For optimum performance, provide a low-
inductance connection to the ground plane.
Amplifier Output. Use a series blocking capacitor with less than
3 Ω reactance at your lowest operating frequency.
Supply Connection. Bypass directly at the supply pin. The value
of the bypass capacitor is determined by the lowest operating
4
4
4
4
V CC
frequency, and is typically the same as the blocking capacitor
value. Additional bypassing may be necessary for long V CC
lines.
—
1
—
1
SHDN
Shutdown Input. Driving SHDN with a logic low turns off the
amplifier.
Bias Resistor Connection. Connect a resistor to GND to set the
—
—
1
5
BIAS
bias current. See the Supply Current vs. R BIAS graph in the
Typical Operating Characteristics .
4
_______________________________________________________________________________________
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