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MAX2640 fiches techniques PDF

Maxim Integrated - 400MHz to 2500MHz SiGe Ultra-Low-Noise Amplifiers

Numéro de référence MAX2640
Description 400MHz to 2500MHz SiGe Ultra-Low-Noise Amplifiers
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX2640 fiche technique
19-1384; Rev 1; 2/99
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KIT
SHEET
400MHz to 2500MHz SiGe
Ultra-Low-Noise Amplifiers
General Description
The MAX2640/MAX2641 are low-cost, ultra-low-noise
amplifiers designed for applications in the cellular, PCS,
GPS, and 2.4GHz ISM frequency bands. Operating from
a single +2.7V to +5.5V supply, these devices consume
only 3.5mA of current while providing a low noise fig-
ure, high gain, high input IP3, and an operating fre-
quency range that extends from 400MHz to 2500MHz.
The MAX2640 is optimized for 400MHz to 1500MHz
applications, with a typical performance of 15.1dB gain,
input IP3 of -10dBm, and a noise figure of 0.9dB at
900MHz. The MAX2641 is optimized for 1400MHz to
2500MHz applications, with a typical performance of
14.4dB gain, an input IP3 of -4dBm, and a noise figure
of 1.3dB at 1900MHz.
These devices are internally biased, eliminating the
need for external bias resistors and chokes. In a typical
application, the only external components needed are a
two-element input match, input and output blocking
capacitors, and a VCC bypass capacitor.
The MAX2640/MAX2641 are designed on a high-fre-
quency, low-noise, advanced silicon-germanium
process and are offered in the space-saving 6-pin
SOT23 package.
Applications
400MHz/900MHz/2.4GHz ISM Radios
Cellular/PCS Handsets
GPS Receivers
Cordless Phones
Wireless LANs
Wireless Data
Features
o Wide Operating Frequency Range
MAX2640: 400MHz to 1500MHz
MAX2641: 1400MHz to 2500MHz
o Low Noise Figure
MAX2640: 0.9dB at 900MHz
MAX2641: 1.2dB at 1575MHz
1.3dB at 1900MHz
1.5dB at 2450MHz
o High Gain
MAX2640: 15.1dB at 900MHz
MAX2641: 15.7dB at 1575MHz
14.4dB at 1900MHz
13.5dB at 2450MHz
o High Reverse Isolation
MAX2640: 40dB at 900MHz
MAX2641: 31dB at 1575MHz
30dB at 1900MHz
24dB at 2450MHz
o +2.7V to +5.5V Single-Supply Operation
o Low 3.5mA Supply Current
o Ultra-Small SOT23-6 Package
Ordering Information
PART
TEMP.
RANGE
PIN-
SOT
PACKAGE TOP MARK
MAX2640EUT-T -40°C to +85°C 6 SOT23-6
MAX2641EUT-T -40°C to +85°C 6 SOT23-6
AAAV
AAAW
Pin Configuration appears at end of data sheet.
Typical Operating Circuits
C1
RFIN
ZM1
VCC
VCC
C4 C3
BIAS GENERATOR
Z1
RFIN
LNA
C2
RF OUT
MAX2640/1
RF OUT
ZM2
FREQUENCY (MHz)
C1
VALUE
C2
VALUE
MAX2640 MAX2641 (pF) (pF)
900 — 470 3
C3 C4
VALUE VALUE
(pF) (pF)
470 —
Z1* ZM1
VALUE VALUE
(nH) (pF)
9.85 2
ZM2
VALUE
— 1575 100 100 470 — 5.6 1 6.8nH
1900 470 100 470
— 2.55
1
1pF
2450 470 100 470 100 1.65
1
1pF
GND *The series inductor Z1 can be replaced by a transmission line of appropriate impedance
and electrical length.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.

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