Rainbow-electronics MAX2641 Manuale Utente Scaricare il pdf (Pagina 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.

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 V

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

♦ Wide Operating Frequency Range

MAX2640: 400MHz 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

MAX2640/MAX2641

400MHz to 2500MHz SiGe

Ultra-Low-Noise Amplifiers

________________________________________________________________

Maxim Integrated Products

RFIN

ZM1

BIAS GENERATOR

GND

LNA

RF OUT

MAX2640/1

ZM2

*The series inductor Z1 can be replaced by a transmission line of appropriate impedance

and electrical length.

FREQUENCY (MHz)

VALUE

(pF)

VALUE

(pF)

VALUE

(pF)

VALUE

(pF)

Z1*

VALUE

(nH)

ZM1

VALUE

(pF)

ZM2

VALUE

MAX2640 MAX2641

900

—

1575

1900

2450

470

100

470

100

470

—

100

9.85

5.6

2.55

1.65

—

6.8nH

1pF

Typical Operating Circuits

19-1384; Rev 1; 2/99

PART

MAX2640EUT-T

MAX2641EUT-T

-40°C to +85°C

TEMP.

RANGE

PIN-

PACKAGE

6 SOT23-6

EVALUATION KIT

FOLLOWS DATA SHEET

Ordering Information

SOT

TOP MARK

AAAV

AAAW

Pin Configuration appears at end of data sheet.

1 2 3 4 5 6 7 8

Sommario

Pagina 1 - Ultra-Low-Noise Amplifiers

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.General Descript

Pagina 2

MAX2640/MAX2641 400MHz to 2500MHz SiGeUltra-Low-Noise Amplifiers 2 ___________________________________________________________________________________

Pagina 3

MAX2640/MAX2641 400MHz to 2500MHz SiGeUltra-Low-Noise Amplifiers _____________________________________________________________________________________

Pagina 4

MAX2640/MAX2641 400MHz to 2500MHz SiGeUltra-Low-Noise Amplifiers 4 ___________________________________________________________________________________

Pagina 5

MAX2640/MAX2641 400MHz to 2500MHz SiGeUltra-Low-Noise Amplifiers _____________________________________________________________________________________

Pagina 6

MAX2640/MAX2641 400MHz to 2500MHz SiGeUltra-Low-Noise Amplifiers 6 ___________________________________________________________________________________

Pagina 7

MAX2640/MAX2641 400MHz to 2500MHz SiGeUltra-Low-Noise Amplifiers _____________________________________________________________________________________

Pagina 8

MAX2640/MAX2641 400MHz to 2500MHz SiGeUltra-Low-Noise Amplifiers 8 ___________________________________________________________________________________

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