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General Description

The MAX2642/MAX2643 low-cost, high third-order inter-

cept point (IP3), low-noise amplifiers (LNAs) are

designed for applications in cellular, ISM, SMR, and

PMR systems. They feature a programmable bias,

allowing the IP3 and supply current to be optimized for

specific applications. These LNAs provide up to 0dBm

input IP3 while maintaining a low noise figure of 1.3dB.

The gain for these devices is typically 17dB. The

MAX2642 also features a 13dB attenuation step, which

extends the LNA’s dynamic range. Both devices feature

a shutdown mode that minimizes power consumption.

On-chip output matching saves board space by reduc-

ing the number of external components.

The MAX2642/MAX2643 are designed on a low-noise,

advanced silicon-germanium (SiGe) process technolo-

gy. They operate from a +2.7V to +5.5V single supply

and are available in the ultra-small 6-pin SC70 package.

________________________Applications

800MHz/900MHz Cellular Phones

900MHz Cordless Phones

868MHz/900MHz ISM-Band Wireless Data

PMR/SMR/LMR

Features

♦ Wide Frequency Range: 800MHz to 1000MHz

♦ High Output IP3 and Adjustable

+17dBm at 5.3mA

+7dBm at 2.8mA

♦ Low Noise Figure: 1.3dB at 900MHz

♦ 13dB Attenuation Step (MAX2642)

♦ On-Chip Output Matching

♦ Low-Power Shutdown Mode

♦ +2.7V to +5.5V Single-Supply Operation

♦ Ultra-Small SC70-6 Package

MAX2642/MAX2643

900MHz SiGe, High IP3,

Low-Noise Amplifiers

________________________________________________________________ Maxim Integrated Products 1

GND

RFIN

16RFOUT

5 GND

BIAS

MAX2642

MAX2643

SC70-6

TOP VIEW

Pin Configuration

19-1682; Rev 0; 4/00

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

EVALUATION KIT MANUAL

FOLLOWS DATA SHEET

Ordering Information

6 SC70-6

PIN-

PACKAGE

TEMP. RANGE

-40°C to +85°C

MAX2642EXT-T

PART

AAC

TOP

MARK

6 SC70-6-40°C to +85°C

MAX2643EXT-T

AAD

MAX2642

MAX2643

INPUT

GND

RFIN RFOUT

( ) ARE FOR MAX2643.

3.3pF

8.7nH

BIAS

47pF

BIAS

510Ω

OUTPUT

33k

(10k)

LOW GAIN

(ENABLE)

HIGH GAIN

(SHUTDOWN)

BIAS

Typical Operating Circuit

1 2 3 4 5 6 ... 15 16

Resumo do Conteúdo

Página 1 - Low-Noise Amplifiers

General DescriptionThe MAX2642/MAX2643 low-cost, high third-order inter-cept point (IP3), low-noise amplifiers (LNAs) aredesigned for applications in

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers10 ______________________________________________________________________________________Tabl

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers______________________________________________________________________________________ 11Tabl

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers12 ______________________________________________________________________________________Tabl

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers______________________________________________________________________________________ 13Tabl

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers14 ______________________________________________________________________________________Tabl

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers______________________________________________________________________________________ 15Pack

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers16 ______________________________________________________________________________________NOTE

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers2 _______________________________________________________________________________________ABSO

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers_______________________________________________________________________________________ 3AC E

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers4 _______________________________________________________________________________________Typi

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers_______________________________________________________________________________________ 512.6

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers6 _______________________________________________________________________________________Pin

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers_______________________________________________________________________________________ 7Tabl

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers8 _______________________________________________________________________________________Tabl

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MAX2642/MAX2643900MHz SiGe, High IP3,Low-Noise Amplifiers_______________________________________________________________________________________ 9Tabl

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Rainbow-electronics MAX2643 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Hardware Rainbow-electronics MAX2643. Rainbow Electronics MAX2643 User Manual Manual do Utilizador

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