Rainbow-electronics MAX2684 User Manual download pdf

General Description

The MAX2683/MAX2684 are super-high-performance,

low-cost downconverter mixers intended for wireless

local loop (WLL) and digital microwave radio (DMR)

applications in the 3.4GHz to 3.8GHz frequency band.

The MAX2683 is optimized for downconversion to IF

frequencies between 100MHz and 400MHz, and allows

both high-side and low-side local oscillator (LO) injec-

tion. The MAX2684 is optimized for IF frequencies

between 800MHz and 1000MHz, and allows low-side

LO injection. A logic-level control enables an internal

frequency doubler on both devices, allowing the exter-

nal LO source to run at full or half frequency. An internal

LO filter reduces LO harmonics and spurious mixing.

The MAX2683/MAX2684 feature an externally adjustable

bias control, set with a single resistor, that lets the user

trade supply current for linearity to optimize system per-

formance. These devices use a double-balanced

Gilbert-cell architecture with single-ended RF and LO

inputs and differential open-collector IF output ports.

Differential IF ports provide a wideband, flexible inter-

face for either single-ended or differential applications.

The MAX2683/MAX2684 operate from a single +2.7V to

+5.5V supply. The devices are packaged in an ultra-

small 16-pin TSSOP-EP package with an exposed pad-

dle for optimum performance at 3.5GHz.

________________________Applications

Wireless Local Loop (WLL)

Digital Microwave Radio (DMR)

Wireless Broadband Access

Features

♦ 3.4GHz to 3.8GHz RF Frequency Range

♦ 100MHz to 400MHz IF Frequency Range

(MAX2683)

800MHz to 1000MHz IF Frequency Range

(MAX2684)

♦ Logic-Enabled LO Frequency Doubler

♦ Conversion Gain

+6.7dB (MAX2683)

+1dB (MAX2684)

♦ Programmable IIP3

+7dBm to +11dBm (MAX2683)

+8dBm to +12dBm (MAX2684)

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

♦ Ultra-Small 16-Pin TSSOP-EP Package

MAX2683/MAX2684

3.5GHz Downconverter Mixers

with Selectable LO Doubler

________________________________________________________________ Maxim Integrated Products 1

BIAS

GND

IFOUT+

GND

IFOUT-

GND

TOP VIEW

MAX2683

MAX2684

GND

ENX2

RFIN

GND

LOX2

LOX1

TSSOP-EP

Pin Configuration

19-1620; Rev 1; 5/01

EVALUATION KIT

AVAILABLE

Ordering Information

Typical Operating Circuit appears at end of data sheet.

16 TSSOP-EP*

PIN-PACKAGETEMP. RANGE

-40°C to +85°C

MAX2683EUE

PART

16 TSSOP-EP*-40°C to +85°C

MAX2684EUE

*Exposed pad

RFIN

IFOUT+

IFOUT-

BIAS

GND

BUFFER

DOUBLER

LOX1 LOX2

ENX2

MAX2683

MAX2684

BIAS

Functional Diagram

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.

1 2 3 4 5 6 ... 16 17

Summary of Contents

Page 1 - 3.5GHz Downconverter Mixers

General DescriptionThe MAX2683/MAX2684 are super-high-performance,low-cost downconverter mixers intended for wirelesslocal loop (WLL) and digital micr

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MAX2683/MAX26843.5GHz Downconverter Mixers with Selectable LO Doubler10 ______________________________________________________________________________

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MAX2683/MAX26843.5GHz Downconverter Mixers with Selectable LO Doubler_________________________________________________________________________________

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MAX2683/MAX26843.5GHz Downconverter Mixers with Selectable LO Doubler12 ______________________________________________________________________________

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MAX2683/MAX26843.5GHz Downconverter Mixers with Selectable LO Doubler_________________________________________________________________________________

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MAX2683/MAX26843.5GHz Downconverter Mixers with Selectable LO Doubler_________________________________________________________________________________

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Page 9

MAX2683/MAX26843.5GHz Downconverter Mixers with Selectable LO DoublerTSSOP.EPSPackage InformationMaxim cannot assume responsibility for use of any cir

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MAX2683/MAX26843.5GHz Downconverter Mixers with Selectable LO Doubler_________________________________________________________________________________

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Rainbow-electronics MAX2684 User Manual

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