Rainbow-electronics MAX2682 User Manual download pdf

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 MAX2680/MAX2681/MAX2682 miniature, low-cost,

low-noise downconverter mixers are designed for low-

voltage operation and are ideal for use in portable com-

munications equipment. Signals at the RF input port are

mixed with signals at the local oscillator (LO) port using a

double-balanced mixer. These downconverter mixers

operate with RF input frequencies between 400MHz and

2500MHz, and downconvert to IF output frequencies

between 10MHz and 500MHz.

The MAX2680/MAX2681/MAX2682 operate from a sin-

gle +2.7V to +5.5V supply, allowing them to be pow-

ered directly from a 3-cell NiCd or a 1-cell Lithium

battery. These devices offer a wide range of supply

currents and input intercept (IIP3) levels to optimize

system performance. Additionally, each device features

a low-power shutdown mode in which it typically draws

less than 0.1µA of supply current. Consult the

Selector

Guide

for various combinations of IIP3 and supply cur-

rent.

The MAX2680/MAX2681/MAX2682 are manufactured

on a high-frequency, low-noise, advanced silicon-ger-

manium process and are offered in the space-saving

6-pin SOT23 package.

Applications

400MHz/900MHz/2.4GHz ISM-Band Radios

Personal Communications Systems (PCS)

Cellular and Cordless Phones

Wireless Local Loop

IEEE-802.11 and Wireless Data

Features

♦ 400MHz to 2.5GHz Operation

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

♦ Low Noise Figure: 6.3dB at 900MHz (MAX2680)

♦ High Input Third-Order Intercept Point

(IIP3 at 2450MHz)

-6.9dBm at 5.0mA (MAX2680)

+1.0dBm at 8.7mA (MAX2681)

+3.2dBm at 15.0mA (MAX2682)

♦ <0.1µA Low-Power Shutdown Mode

♦ Ultra-Small Surface-Mount Packaging

MAX2680/MAX2681/MAX2682

400MHz to 2.5GHz, Low-Noise,

SiGe Downconverter Mixers

________________________________________________________________

Maxim Integrated Products

GND

IFOUTRFIN

16SHDN

5 V

MAX2680

MAX2681

MAX2682

SOT23-6

TOP VIEW

19-4786; Rev 1; 11/98

PART

MAX2680EUT-T

MAX2681EUT-T

MAX2682EUT-T

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

6 SOT23-6

EVALUATION KIT MANUAL

FOLLOWS DATA SHEET

Pin Configuration

Ordering Information

SOT

TOP MARK

AAAR

AAAS

AAAT

8.7MAX2681

5.0MAX2680

Selector Guide

PART

(mA)

-6.1

IIP3

(dBm)

-12.9

7.0

(dB)

6.3

14.2

GAIN

(dB)

11.6

900MHz

+0.5

IIP3

(dBm)

-8.2

11.1

(dB)

8.3

8.4

GAIN

(dB)

7.6

1950MHz

+1.0

IIP3

(dBm)

-6.9

12.7

(dB)

11.7

7.7

GAIN

(dB)

7.0

2450MHz

-1.815.0MAX2682 6.5 14.7 +4.4 10.2 10.4 +3.2 13.4 7.9

Typical Operating Circuit appears at end of data sheet.

FREQUENCY

1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 - SiGe Downconverter Mixers

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

Page 2

MAX2680/MAX2681/MAX2682Power-Supply LayoutTo minimize coupling between different sections of theIC, the ideal power-supply layout is a star configurat

Page 3

MAX2680/MAX2681/MAX2682400MHz to 2.5GHz, Low-Noise,SiGe Downconverter Mixers__________________________________________________________________________

Page 4

MAX2680/MAX2681/MAX2682400MHz to 2.5GHz, Low-Noise,SiGe Downconverter Mixers12 _______________________________________________________________________

Page 5

MAX2680/MAX2681/MAX2682400MHz to 2.5GHz, Low-Noise,SiGe Downconverter Mixers2 ________________________________________________________________________

Page 6

MAX2680/MAX2681/MAX2682400MHz to 2.5GHz, Low-Noise,SiGe Downconverter Mixers__________________________________________________________________________

Page 7

2354672.5 3.53.0 4.0 4.5 5.0 5.5MAX2680SUPPLY CURRENT vs. SUPPLY VOLTAGEMAX2680/1/2-01SUPPLY VOLTAGE (V)SUPPLY CURRENT (mA)TA = +85°CTA = +25°CTA = -4

Page 8

MAX2680/MAX2681/MAX2682400MHz to 2.5GHz, Low-Noise,SiGe Downconverter Mixers__________________________________________________________________________

Page 9

MAX2680/MAX2681/MAX2682400MHz to 2.5GHz, Low-Noise,SiGe Downconverter Mixers6 ________________________________________________________________________

Page 10

MAX2680/MAX2681/MAX2682400MHz to 2.5GHz, Low-Noise,SiGe Downconverter Mixers__________________________________________________________________________

Page 11

MAX2680/MAX2681/MAX2682400MHz to 2.5GHz, Low-Noise,SiGe Downconverter Mixers8 ________________________________________________________________________

Page 12

Detailed DescriptionThe MAX2680/MAX2681/MAX2682 are 400MHz to2.5GHz, silicon-germanium, double-balanced down-converter mixers. They are designed to pr

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Rainbow-electronics MAX2682 User Manual

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