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MAX3580

Direct-Conversion TV Tuner

Maxim Integrated 

MAX3580

EVALUATION KIT AVAILABLE

Direct-Conversion TV Tuner

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 perfor-

mance 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 optimizes 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 sup-

ply and dissipates 650mW. The MAX3580 is available

in a small 32-pin TQFN package (5mm x 5mm) with an

exposed paddle.

Applications

●● Digital Televisions

●● Digital Terrestrial Set-Tops

●● Laptop Televisions

●● USB Peripherals

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX3580ETJ+

-40°C to +85°C

32 TQFN-EP*

MAX3580ETJ+T -40°C to +85°C

32 TQFN-EP*

*EP = Exposed pad.

+Denotes lead(Pb)-free/RoHS-compliant package.

T = Tape-and-reel package.

Features

●● 650mW Power Dissipation (at VCC = +3.3V)

●● I and Q Baseband Outputs Eliminate All IF-SAW

Filters

●● Integrated RF Tracking Filters

●● Tunable Baseband Lowpass Filters

●● Full-Band VHF-III and UHF Tuning

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

●● Low Noise Figure: 4.7dB (typ)

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

Phase Noise

●● +3.1V to +3.5V Supply Voltage Range

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

Pin Configuration/Functional Diagram

TOP VIEW

32

31

30

29

28

27

26

25

+

SDA 1

MAX3580

CHARGE

PUMP

24 CP

SCL 2

RFIN2 3

RFIN 4

SERIAL INTERFACE,

CONTROL, AND

LO

SYNTHESIZER

23 LDO

22 GND_TUNE

21 VTUNE

ADDR2 5

20 VCC_VCO

GND_LNA 6

VCC_RF 7

TRACKING

FILTER

0 90 LO

19 BB_AGC

18 BBI+

LEXT 8

17 BBI-

9

10

11

12

13

14

15

16

19-0611; Rev 10; 4/14

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