MAX2640 Maxim Integrated Products, MAX2640 Datasheet

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MAX2640

Manufacturer Part Number
MAX2640
Description
Manufacturer
Maxim Integrated Products
Datasheet

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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 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
application, the only external components needed are a
two-element input match, input and output blocking
capacitors, and a V
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.
19-1384; Rev 3; 4/07
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.
RFIN
315MHz/400MHz/900MHz/2.4GHz ISM Radios
Cellular/PCS Handsets
GPS Receivers
Cordless Phones
Wireless LANs
Wireless Data
Automotive RKE
Z
C1
M1
Z1
RFIN
________________________________________________________________ Maxim Integrated Products
CC
V
BIAS GENERATOR
CC
bypass capacitor.
General Description
LNA
GND
V
MAX2640/1
CC
Applications
RF OUT
C2
C4
Z
RF OUT
M2
Ultra-Low-Noise Amplifiers
C3
300MHz to 2500MHz SiGe
*The series inductor Z1 can be replaced by a transmission line of appropriate impedance
MAX2640 MAX2641
and electrical length.
FREQUENCY (MHz)
900
♦ Wide Operating Frequency Range
♦ Low Noise Figure
♦ High Gain
♦ High Reverse Isolation
♦ +2.7V to +5.5V Single-Supply Operation
♦ Low 3.5mA Supply Current
♦ Ultra-Small SOT23-6 Package
+Indicates lead-free package.
Pin Configuration appears at end of data sheet.
MAX2640EUT-T -40°C to +85°C
MAX2640EUT+T -40°C to +85°C
MAX2640AUT+T -40°C to +125°C 6 SOT23-6
MAX2641EUT-T -40°C to +85°C
MAX2641EUT+T -40°C to +125°C 6 SOT23-6
MAX2640: 300MHz to 1500MHz
MAX2641: 1400MHz to 2500MHz
MAX2640: 0.9dB at 900MHz
MAX2641: 1.2dB at 1575MHz
MAX2640: 15.1dB at 900MHz
MAX2641: 15.7dB at 1575MHz
MAX2640: 40dB at 900MHz
MAX2641: 31dB at 1575MHz
1575
1900
2450
PART
VALUE
(pF)
470
100
470
470
C1
Typical Operating Circuits
1.3dB at 1900MHz
1.5dB at 2450MHz
14.4dB at 1900MHz
13.5dB at 2450MHz
30dB at 1900MHz
24dB at 2450MHz
VALUE
(pF)
100
100
100
C2
3
RANGE
TEMP
Ordering Information
VALUE
(pF)
470
470
470
470
C3
VALUE
(pF)
100
C4
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
6 SOT23-6
VALUE
(nH)
9.85
2.55
1.65
Z1*
5.6
Features
VALUE
ZM1
(pF)
2
1
1
1
TOP MARK
AAAW
AAAW
AAAV
AAAV
AAAV
SOT
VALUE
6.8nH
ZM2
1pF
1pF
1

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MAX2640 Summary of contents

Page 1

... IP3, and an operating fre- quency 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 ...

Page 2

... Note 1: Pin must be AC-coupled with a DC blocking capacitor. CAUTION! ESD SENSITIVE DEVICE DC ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V -40°C to +85°C (MAX2640EUT/MAX2641EUT noted. Typical values are +3.0V are guaranteed by design and characterizarion. ...

Page 3

... 800 840 880 920 960 FREQUENCY (MHz) MIN TYP MAX 15.7 1.2 -8 -15 -31 -21 +1.4 13.5 1.5 -10 -11 -24 -19 -2.5 MAX2640 MATCHED AT 900MHz NOISE FIGURE vs. FREQUENCY +85° +25° -40° 800 840 880 920 1000 FREQUENCY (MHz) UNITS ...

Page 4

... INPUT RETURN LOSS -11 -12 -13 OUTPUT RETURN LOSS -14 -15 -16 1800 1850 1900 FREQUENCY (MHz) 4 _______________________________________________________________________________________ Typical Operating Characteristics (continued) = +25°C, unless otherwise noted.) A MAX2640 MATCHED AT 900MHz REVERSE ISOLATION vs. FREQUENCY 0 -10 -20 -30 -40 -50 -60 800 840 880 920 960 FREQUENCY (MHz -40° +25° ...

Page 5

... Ultra-Low-Noise Amplifiers FUNCTION Applications Information External Matching Components The MAX2640/MAX2641 are easy to use, generally requiring only five external components as shown in the Typical Operating Circuit. To reduce external compo- nent count further, replace external inductors with microstrip transmission lines. The high reverse isolation allows the tuning of the input matching network without affecting the output match, and vice versa ...

Page 6

... SiGe Ultra-Low-Noise Amplifiers Table 1. MAX2640 Typical Scattering Parameters at V FREQUENCY S11 PHASE (MHz) MAG 400 0.907 -35.1 500 0.882 -43.1 600 0.858 -50.8 700 0.832 -58.1 800 0.810 -64.9 900 0.788 -71.0 1000 0.771 -76.6 1100 0.749 -82.3 1200 0.735 -88.0 1300 0.720 -93.4 1400 0.702 -98.8 1500 0.688 -104.9 Table 2 ...

Page 7

... Table 3. MAX2640 Typical Noise Parameters at V FREQUENCY (MHz) f MIN 400 0.66 500 0.69 600 0.72 700 0.75 800 0.78 900 0.82 1000 0.85 1100 0.89 1200 0.93 1300 0.97 1400 1.01 1500 1.06 Table 4. MAX2641 Typical Noise Parameters at V FREQUENCY (MHz) f MIN 1500 1.02 1600 1.05 1700 1.08 1800 1.10 1900 1.14 2000 1.17 2100 1.20 2200 1.23 2300 1.27 2400 1.30 2500 1 ...

Page 8

... SiGe Ultra-Low-Noise Amplifiers Pin Configuration TOP VIEW RFIN 1 MAX2640 GND 2 MAX2641 GND 3 SOT23-6 (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 8 _______________________________________________________________________________________ GND ...

Page 9

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 9 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products 300MHz to 2500MHz SiGe ...

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