MAXIM MAX2650 User Manual
_______________General Description
The MAX2650 is a low-noise amplifier for use from DC
to microwave frequencies. Operating from a single +5V
supply, it has a flat gain response to 900MHz. The
MAX2650’s low noise figure and high drive capability
make it ideal for a variety of transmit, receive, and
buffer applications.
The device is internally biased, eliminating the need for
external bias resistors or inductors. In a typical application, the only external components needed are input
and output blocking capacitors and a V
CC
bypass
capacitor.
The MAX2650 comes in a 4-pin SOT143 package,
requiring minimal board space.
________________________Applications
Wireless Local Loop
Global Positioning Systems (GPS)
ISM Radios
Special Mobile Radios
Wireless Local-Area Networks
Cellular Base Stations
Set-Top Boxes
____________________________Features
♦ Internally Biased
♦ High Gain: 18.3dB at 900MHz
♦ 3.9dB Noise Figure
♦ Single +4.5V to +5.5V Operation
♦ -1dBm Output 1dB Compression Power
♦ Low-Cost Silicon Bipolar Design
♦ Ultra-Small SOT143 Package
MAX2650
DC-to-Microwave,
+5V Low-Noise Amplifier
________________________________________________________________ Maxim Integrated Products 1
__________________Pin Configuration
V
CC
C
BYP
C
BLOCK
GND
OUT
OUT
V
CC
IN
C
BLOCK
IN
MAX2650
OUT
V
CC
GND
3
4
21IN
SOT143
TOP VIEW
MAX2650
__________Typical Operating Circuit
19-1135; Rev 1; 8/03
PART
MAX2650EUS-T -40°C to +85°C
TEMP RANGE PIN-PACKAGE
4 SOT143-4
EVALUATION KIT
AVAILABLE
______________Ordering Information
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX2650
DC-to-Microwave, +5V Low-Noise Amplifier
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= +5.0V, Z0= 50Ω, fIN= 900MHz, TA= +25°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: Parts are designed to operate over specified temperature range. Specifications are production tested and guaranteed
at +25°C.
V
CC
to GND..............................................................-0.3V to +8V
Input Power ....................................................................+13dBm
Continuous Power Dissipation (T
A
= +70°C)
SOT143-4 (derate 4mW/°C above +70°C)...................320mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(Note 1)
fIN= 800MHz to 1000MHz
fIN= 100MHz to 1000MHz
CONDITIONS
dB16.5 18.3 21Power Gain
°C-40 85Operating Temperature Range
15.5 17.7 20.0
V4.5 5.5Supply Voltage
ps300Group Delay
1.3:1Maximum Output Voltage Standing-Wave Ratio
dBm-1Output 1dB Compression Point
dBm10Output IP3
dB3.9Noise Figure
1.5:1Maximum Input Voltage Standing-Wave Ratio
UNITSMIN TYP MAXPARAMETER
TA= T
MIN
to T
MAX
13.0 17.7 22.0
VCC= 4.5V to 5.5V
mA
11.0 17.7 24.0
Supply Current
CAUTION! ESD SENSITIVE DEVICE
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