MAX2630EUS+T Maxim Integrated Products, MAX2630EUS+T Datasheet - Page 7

• Manufacturer Part Number: MAX2630EUS+T
• Description: RF Amplifier VHF-to-Microwave, 3V , General Purpose Am
• Manufacturer: Maxim Integrated Products
• Type: General Purpose Amplifierr

Specifications of MAX2630EUS+T

• Operating Frequency: 800 MHz to 1000 MHz
• P1db: - 11 dB
• Noise Figure: 3.8 dB
• Bandwidth: 1000 MHz
• Operating Supply Voltage: 3 V, 5 V
• Supply Current: 11 mA
• Maximum Power Dissipation: 320 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Channels: 1 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX2630–MAX2633 are broadband amplifiers with
3dB bandwidth greater than 1GHz. Their small size and
internal bias circuitry make them ideal for applications
where board space is limited. The MAX2632/MAX2633
have a user-selectable bias current that allows the user
to set both gain and output power for a particular appli-
cation, and the MAX2631/MAX2633 incorporate shut-
down capability.
The MAX2630–MAX2633 are easy to use, as shown in the
Typical Operating Circuit and Figures 1, 2 and 3. Input
and output series capacitors may be necessary to block
DC bias voltages generated by the amplifiers from inter-
acting with adjacent circuitry. These capacitors must be
large enough to contribute negligible reactance in a 50Ω
system at the minimum operating frequency. Use the fol-
lowing equation to calculate their minimum value:
where f (in megahertz) is the minimum operating
frequency.
The V
tion. To accomplish this, connect a capacitor between
the V
practical. Use the same equation given above (for DC-
blocking capacitor values) to calculate the minimum
capacitor value. If the PC board has long V
additional bypassing may be necessary. This can be
done farther away from the package, if needed.
Proper grounding of the GND pin is essential. If the PC
board uses a topside RF ground, connect it directly to
the GND pin. For a board where the ground plane is not
on the component side, the best technique is to con-
nect the GND pin to it with a plated through-hole close
to the package.
An on-chip buffer at the MAX2631/MAX2633’s SHDN
pin makes bypassing this pin unnecessary except in
very noisy applications. When RF filtering is needed,
use a bypass capacitor similar to the one used on V
Since negligible current flows into this pin, additional
RF filtering may be done with a series resistor.
To set the MAX2632/MAX2633’s supply current,
connect a resistor from the BIAS pin to ground. To
estimate the value of this resistor, refer to the graph
Supply Current vs. R
Characteristics.
_______________Detailed Description
__________Applications Information
CC
CC
pin and ground, as close to the package as is
pin must be RF bypassed for correct opera-
C
BLOCK
_______________________________________________________________________________________
BIAS
=
External Components
53 000
in the Typical Operating
,
f
(
pF
)
CC
General-Purpose Amplifiers
lines,
CC
.
VHF-to-Microwave, +3V,
Figure 1. MAX2630 Typical Operating Circuit
Figure 2. MAX2631 Typical Operating Circuit
Figure 3. MAX2632 Typical Operating Circuit
OFF
OUT
OUT
OUT
ON
R
C
BIAS
BLOCK
C
BLOCK
C
BLOCK
GND
OUT
BIAS
GND
OUT
SHDN
GND
OUT
MAX2630
BIAS
MAX2632
BIAS
MAX2631
V
IN
CC
IN
V
CC
C
IN
V
CC
BLOCK
C
BLOCK
C
BLOCK
C
C
BYP
BYP
C
BYP
V
IN
CC
IN
V
CC
IN
V
CC
7