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General Description

The MAX3580 fully integrated, direct-conversion TV tuner

is designed for Digital Video Broadcasting-Terrestrial

(DVB-T) applications. The integrated tuner covers a

170MHz to 230MHz input frequency range for the VHF-III

band and 470MHz to 878MHz for the UHF band.

The MAX3580 direct-conversion tuner integrates an RF

input switch and a multiband tracking filter, allowing

low-power tuner-on-board applications without the cost

and power-dissipation issues of dual-conversion tuner

solutions. The zero-IF architecture eliminates the need

for SAW filters by providing baseband I and Q outputs

directly to the demodulator. In addition, DC-offset can-

cellation is implemented on-chip using a mixed-signal

architecture to improve the second-order distortion per-

formance and the dynamic range of the downstream

digitizer and demodulator.

The MAX3580 features dynamic gain control of more

than 76dB and a typical midband noise figure of 4.7dB

referred to the LNA input. The VCO architecture opti-

mizes both in-band and wideband phase noise for

OFDM applications where sensitivity to both 1kHz

phase noise and wideband phase noise related to

strong adjacents can be a problem.

The MAX3580 communicates using a 2-wire serial bus.

The device operates from a typical +3.3V power supply

and dissipates 650mW. The MAX3580 is available in a

small 32-pin thin QFN package (5mm x 5mm) with an

exposed paddle. Electrical performance is guaranteed

over the extended -40°C to +85°C temperature range.

Applications

Digital Televisions

Digital Terrestrial Set-Tops

Laptop Televisions

Automotive Televisions

USB Peripherals

Features

o 650mW Power Dissipation (at V

= +3.3V)

o I and Q Baseband Outputs Eliminate All IF-SAW

Filters

o Integrated RF Tracking Filters

o Tunable Baseband Lowpass Filters

o Full-Band VHF-III and UHF Tuning

o +38dB Digital ACPR, +47dB Analog ACPR

o Low Noise Figure: 4.7dB (typ)

o Frac-N Synthesizer for -90dBc/Hz Close-In

Phase Noise

o Baseband Overload Detector Controls RF AGC if

Desired

o +3.1V to +3.5V Supply Voltage Range

o Ultra-Small, 5mm x 5mm Thin QFN Package

MAX3580

Direct-Conversion TV Tuner

________________________________________________________________

Maxim Integrated Products

PART TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX3580ETJ+ -40°C to +85°C 32 TQFN-EP* T3255-5

MAX3580ETJ+T -40°C to +85°C 32 TQFN-EP* T3255-5

Pin Configuration/

Functional Diagram

Ordering Information

TRACKING

FILTER

GND_TUNE

LDO

VCC_VCO

MUX

RFIN2

ADDR2

LEXT

VCC_SYN

RFIN

RF_AGC

SCL

SDA

BBI-

BBQ-

BBQ+

BB_AGC

BBI+

VCC_BB

REF_BUFF

VCC_RF

OVLD_DET

IND1

IND2

VCC_XTAL

VTUNE

OVLD_DET

GND_LNA

GND_CP

GND_PLL

N.C.

TOP VIEW

32 28

293031

1611 12

MAX3580

DAC

CHARGE

PUMP

SERIAL INTERFACE, CONTROL,

AND

SYNTHESIZER

19-0611; Rev 0; 7/06

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.

EP = Exposed paddle.

Denotes lead-free package.

= Tape-and-reel package.

EVALUATION KIT

AVAILABLE

1 2 3 4 5 6 ... 20 21

Direct-Conversion TV Tuner 1

Resumo do Conteúdo

Página 1 - Direct-Conversion TV Tuner

General DescriptionThe MAX3580 fully integrated, direct-conversion TV tuneris designed for Digital Video Broadcasting-Terrestrial(DVB-T) applications.

Página 2

MAX3580Direct-Conversion TV Tuner10 ______________________________________________________________________________________Pin DescriptionPIN NAME FUNC

Página 3

MAX3580Direct-Conversion TV Tuner______________________________________________________________________________________ 11Typical Application CircuitT

Página 4

MAX3580Direct-Conversion TV Tuner12 ______________________________________________________________________________________Detailed DescriptionProgramm

Página 5

MAX3580Direct-Conversion TV Tuner______________________________________________________________________________________ 13Register DescriptionsN-Divid

Página 6

MAX3580Direct-Conversion TV Tuner14 ______________________________________________________________________________________Shutdown Control (Register A

Página 7

MAX3580Direct-Conversion TV Tuner______________________________________________________________________________________ 15DC Offset DAC (Register Addr

Página 8

MAX3580Direct-Conversion TV Tuner16 ______________________________________________________________________________________To Read Back FusesIMPORTANT

Página 9

MAX3580Direct-Conversion TV Tuner______________________________________________________________________________________ 17Write CycleWhen addressed wi

Página 10

MAX3580Direct-Conversion TV Tuner18 ______________________________________________________________________________________Applications InformationBand

Página 11

MAX3580Direct-Conversion TV Tuner______________________________________________________________________________________ 19RF Tracking FilterThe MAX358

Página 12

MAX3580Direct-Conversion TV Tuner2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC E

Página 13

MAX3580Direct-Conversion TV Tuner20 ______________________________________________________________________________________Package Information(The pack

Página 14

MAX3580Direct-Conversion TV TunerMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product

Página 15

MAX3580Direct-Conversion TV Tuner_______________________________________________________________________________________ 3PARAMETER SYMBOL CONDITIONS

Página 16

MAX3580Direct-Conversion TV Tuner4 _______________________________________________________________________________________AC ELECTRICAL CHARACTERISTIC

Página 17

MAX3580Direct-Conversion TV Tuner_______________________________________________________________________________________ 5AC ELECTRICAL CHARACTERISTIC

Página 18

MAX3580Direct-Conversion TV Tuner6 _______________________________________________________________________________________TEST SCENARIO COMMENTS SPEC

Página 19

MAX3580Direct-Conversion TV Tuner_______________________________________________________________________________________7708010090110150 170 180 190 2

Página 20

MAX3580Direct-Conversion TV Tuner8 _______________________________________________________________________________________010520152530UHF MODE NOISE F

Página 21

MAX3580Direct-Conversion TV Tuner_______________________________________________________________________________________9-45-55-65-7502010 30 40 50STO

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Rainbow-electronics MAX3580 Manual do Utilizador

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