MAX2641EUT-T 查看數據表（PDF） - Maxim Integrated
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MAX2641EUT-T Datasheet PDF : 9 Pages
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MAX2640/MAX2641
EVALUATION KIT AVAILABLE
300MHz 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 figure,
high gain, high input IP3, and an operating frequency
range that extends from 300MHz to 2500MHz.
The MAX2640 is optimized for 300MHz 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 appli-
cation, the only external components needed are a two-
element input match, input and output blocking capaci-
tors, and a VCC bypass capacitor.
The MAX2640/MAX2641 are designed on a high-frequen-
cy, low-noise, advanced silicon-germanium process and
are offered in the space-saving, 6-pin SOT23 package.
Applications
●● 315MHz/400MHz/900MHz/2.4GHz ISM Radios
●● Cellular/PCS Handsets
●● GPS Receivers
●● Cordless Phones
●● Wireless LANs
●● Wireless Data
Typical Operating Circuit
Features
●● Wide Operating Frequency Range
MAX2640: 300MHz to 1500MHz
MAX2641: 1400MHz to 2500MHz
●● Low Noise Figure
MAX2640: 0.9dB at 900MHz
MAX2641: 1.2dB at 1575MHz
1.3dB at 1900MHz
1.5dB at 2450MHz
●● High Gain
MAX2640: 15.1dB at 900MHz
MAX2641: 15.7dB at 1575MHz
14.4dB at 1900MHz
13.5dB at 2450MHz
●● High Reverse Isolation
MAX2640: 40dB at 900MHz
MAX2641: 31dB at 1575MHz
30dB at 1900MHz
24dB at 2450MHz
●● +2.7V to +5.5V Single-Supply Operation
●● Low 3.5mA Supply Current
●● Ultra-Small SOT23-6 Package
Ordering Information
PART
TEMP
RANGE
PIN-
SOFT
PACKAGE TOP MARK
MAX2640EUT-T -40°C to +85°C 6 SOT23
AAAV
MAX2640EUT+T -40°C to +85°C 6 SOT23
AAAV
MAX2640AUT+T -40°C to +125°C 6 SOT23
AAAV
MAX2641EUT-T -40°C to +85°C 6 SOT23
AAAW
MAX2641EUT+T -40°C to +125°C 6 SOT23
AAAW
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Pin Configuration appears at end of data sheet.
C1
RFIN
ZM1
VCC
VCC
C4 C3
Z1
RFIN
BIAS GENERATOR
LNA
MAX2640
MAX2641
C2
RF OUT
RF OUT
ZM2
FREQUENCY (MHz)
C1
VALUE
MAX2640 MAX2641 (pF)
900
—
470
C2
VALUE
(pF)
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.
19-1384; Rev 4; 2/15
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