MAX2016ETI+T【PDF 1/20 页】IC DETECT/CNTRL LOG 28-TQFN

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Sheet目录471

[1页]2页 3页 4页 5页

ATION

EVALU

AVAIL

19-3404; Rev 1; 10/06

KIT

ABLE

LF-to-2.5GHz Dual Logarithmic Detector/

Controller for Power, Gain, and VSWR Measurements

General Description

The MAX2016 dual logarithmic detector/controller is a

fully integrated system designed for measuring and

comparing power, gain/loss, and voltage standing-wave

ratio (VSWR) of two incoming RF signals. An internal

broadband impedance match on the two differential RF

input ports allows for the simultaneous monitoring of sig-

nals ranging from low frequency to 2.5GHz.

The MAX2016 uses a pair of logarithmic amplifiers to

detect and compare the power levels of two RF input

signals. The device internally subtracts one power level

from the other to provide a DC output voltage that is pro-

portional to the power difference (gain). The MAX2016

can also measure the return loss/VSWR of an RF signal

by monitoring the incident and reflected power levels

associated with any given load. A window detector is

easily implemented by using the on-chip comparators,

OR gate, and 2V reference. This combination of circuitry

provides an automatic indication of when the measured

gain is outside a programmable range. Alarm monitoring

Features

? Complete Gain and VSWR Detector/Controller

? Dual-Channel RF Power Detector/Controller

? Low-Frequency to 2.5GHz Frequency Range

? Exceptional Accuracy Over Temperature

? High 80dB Dynamic Range

? 2.7V to 5.25V Supply Voltage Range*

? Internal 2V Reference

? Scaling Stable Over Supply and Temperature

Variations

? Controller Mode with Error Output

? Available in 5mm x 5mm, 28-Pin Thin QFN

Package

*See Power-Supply Connection section.

Ordering Information

can thus be implemented for detecting high-VSWR

states (such as open or shorted loads).

The MAX2016 operates from a single +2.7V to +5.25V*

power supply and is specified over the extended -40°C

to +85°C temperature range. The MAX2016 is available

in a space-saving, 5mm x 5mm, 28-pin thin QFN.

Applications

Return Loss/VSWR Measurements

PART

MAX2016ETI

MAX2016ETI-T

MAX2016ETI+D

TEMP RANGE

-40 ° C to +85 ° C

PIN-

PACKAGE

28 Thin QFN-EP*,

bulk

28 Thin QFN-EP*,

T/R

28 Thin QFN-EP*,

lead free, bulk

PKG

CODE

T2855-3

Dual-Channel RF Power Measurements

Dual-Channel Precision AGC/RF Power Control

Log Ratio Function for RF Signals

MAX2016ETI+TD -40 ° C to +85 ° C

* EP = Exposed pad.

+ Indicates lead-free package.

28 Thin QFN-EP*,

lead free, T/R

T2855-3

Remote System Monitoring and Diagnostics

Cellular Base Station, Microwave Link, Radar,

and other Military Applications

RF/IF Power Amplifier (PA) Linearization

D = Dry pack.

Pin Configuration

FA1

V CC

RFINA+

21 FB1

20 V CC

19 RFINB+

RFINA-

GND

COUTH

CSETH

MAX2016

18 RFINB-

17 GND

16 COUTL

15 CSETL

Typical Application Circuit appears at end of data sheet.

THIN QFN

________________________________________________________________ Maxim Integrated Products

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.

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