MAX2116EVKIT+【PDF 1/16 页】KIT EVAL FOR MAX2116

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19-2433; Rev 4; 7/08

Complete DBS Direct-Conversion Tuner ICs

with Monolithic VCOs

General Description

The MAX2116/MAX2118 family of low-cost direct-

conversion tuner ICs are designed for use in digital

direct broadcast satellite (DBS) television applications,

professional VSAT systems, and two-way Internet

through satellite applications. These devices set the

standard for integration and performance, significantly

reducing the required RF know-how for design imple-

mentation. Uniquely architected, the MAX2116/MAX2118

simplify direct main board and tuner module designs.

The MAX2116/MAX2118 devices directly convert L-

band signals to baseband using a broadband I/Q

downconverter. The operating frequency range extends

from 850MHz to 2175MHz.

Each IC includes an LNA with gain control, I and Q

Features

? Fully Integrated VCOs

? Supports 1Mbaud to 45Mbaud, 850MHz to

2175MHz Operation

? 4MHz to 33MHz Tunable LP Filters

? Complete Synthesizer with I 2 C Interface

? Analog RF VGA and Digital Baseband VGA

? Multiple I 2 C Addresses for Multituner

Applications

? Single-Ended (MAX2116) and Differential

(MAX2118) I/Q Interface

Ordering Information

downconverting mixers, and baseband lowpass filters

gain and cutoff frequency control. Together, the RF and

baseband variable gain amplifiers provide more than

79dB of gain control range.

The devices include fully monolithic VCOs, as well as a

complete frequency synthesizer. Additionally, an on-

PART

MAX2116 UTL

MAX2116UTL+

MAX2118 UTL

MAX2118UTL+

TEMP RANGE

0°C to +85°C

PIN-PACKAGE

40 TQFN-EP*

chip crystal oscillator is provided along with a buffered

output for driving additional tuners and demodulators.

Synthesizer programming and device configuration are

accomplished with a 2-wire serial interface. For multi-

tuner applications, each device can be configured to

have one of eight possible 2-wire interface addresses.

Simplifying the interface to low-voltage CMOS demodu-

lators, the MAX2116/MAX2118 incorporate two 2.85V

regulated outputs for pulling up open-drain interface

connections, thus preventing noisy 3V rails from cor-

*EP = Exposed paddle.

+Denotes a lead-free/RoHS-compliant package.

Pin Configuration/

Functional Diagram

rupting the sensitive analog signal of the tuners.

The MAX2116/MAX2118 devices are the most versatile

family of DBS products available. With both single-

ended and differential baseband outputs, these

IDC-

IDC+

DC OFFSET

CORRECTION

LPF BW

CONTROL

VCCDIG

SCL

devices are compatible with virtually all QPSK/8-PSK

DAC

demodulators. The tuners are available in a very small

(6mm x 6mm) 40-pin thin QFN package.

Applications

DVB

DSS (U.S.)

VCCRF1

RFIN-

RFIN+

N.C.

GC1

MAX2118

GC2

DIV2/

DIV4

INTERFACE LOGIC

AND CONTROL

VREG2

SDA

AS1

N.C.

XTALOUT

VSAT

PFD

Internet Through Satellite

VREG1

VOLTAGE

REGULATOR

CNTOUT

N.C.

XTAL-

PAD 10

XTAL+

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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