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MAX2116

Complete DBS Direct-Conversion Tuner ICs with Monolithic VCOs

Maxim Integrated 

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

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-

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-

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

devices are compatible with virtually all QPSK/8-PSK

demodulators. The tuners are available in a very small

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

Applications

DVB

DSS (U.S.)

VSAT

Internet Through Satellite

Features

♦ Fully Integrated VCOs

♦ Supports 1Mbaud to 45Mbaud, 850MHz to

2175MHz Operation

♦ 4MHz to 33MHz Tunable LP Filters

♦ Complete Synthesizer with I2C Interface

♦ Analog RF VGA and Digital Baseband VGA

♦ Multiple I2C Addresses for Multituner

Applications

♦ Single-Ended (MAX2116) and Differential

(MAX2118) I/Q Interface

Ordering Information

PART

TEMP RANGE PIN-PACKAGE

MAX2116UTL

0°C to +85°C

40 TQFN-EP*

MAX2116UTL+

0°C to +85°C

40 TQFN-EP*

MAX2118UTL

0°C to +85°C

40 TQFN-EP*

MAX2118UTL+

0°C to +85°C

40 TQFN-EP*

*EP = Exposed paddle.

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

Pin Configuration/

Functional Diagram

40

39

38

37

36

35

34

33

32

31

IDC- 1

IDC+ 2

VCCRF1 3

RFIN- 4

DC OFFSET

CORRECTION

LPF BW

CONTROL

DAC

GC2

DIV2/

DIV4

30 VCCDIG

29 SCL

INTERFACE LOGIC

AND CONTROL

28 VREG2

27 SDA

RFIN+ 5

N.C. 6

GC1 7

VREG1 8

VOLTAGE

REGULATOR

N.C. 9

MAX2118

/N

/R

PFD

CP

26 AS1

25 N.C.

24 XTALOUT

23 CNTOUT

22 XTAL-

PAD 10

21 XTAL+

11

12

13

14

15

16

17

18

19

20

________________________________________________________________ Maxim Integrated Products 1

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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