MAXIM MAX3544 Technical data

19-5470; Rev 0; 7/10

EVALUATION KIT

AVAILABLE

Multiband Digital Television Tuner

General Description

The MAX3544 broadband single-conversion television tuner is designed for use in digital (DVB-T, DVB-C, GB20600) television sets and terrestrial receivers. It receives all television bands from 47MHz to 862MHz and converts the selected channel to an industry-standard 36MHz IF.

The MAX3544 includes a variable-gain low-noise input amplifier; an RF tracking filter; an image rejection mixer; a peak detector; an optional internal, self-contained RF gain-control loop (RFAGC); a VCO with fractional-N PLL; an IF bandpass filter; an IF variable-gain amplifier; and a crystal oscillator.

The MAX3544 is available in a small, 6mm x 6mm, thin QFN package, and the application circuit fits in 20mm x 25mm on a two-layer board with single-sided component mounting.

Applications

DVB-T/DVB-T2

DVB-C

DTMB/GB20600

ATSC

Features

S Standard IF Architecture Ensures < -70dBc Spurs

S Integrated RF Tracking Filter

S Integrated IF Bandpass Filter

S Full-Band Coverage (47MHz to 862MHz)

S 70dB Image Rejection

S 4dB Noise Figure

S Fast-Locking, Low Phase-Noise PLL Supports

256QAM

S Crystal Oscillator and Buffer/Divider to Drive

Baseband IC

S 745mW Power Dissipation

Ordering Information

PART TEMP RANGE PIN-PACKAGE

MAX3544CTL+

0NC to +70NC

+Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed paddle.

40 TQFN-EP*

MAX3544

Block Diagram/Typical Application Circuit/Pin Configuration

TUNE

GND

FRAC-N

RFGND2

PLL

IFOUT1A

SDA

IFOUT1B

REFDIV

XTALE

8 9 10

ADDR

IFVGC

LC BANDPASS

XTALB

I2C

IFIN-

FILTER

SCL

CCDIG

REFOUT

GND

DTVOUT+

DTVOUT-

GND

IFIN+

REF_OUT

DIGITAL

DEMODULATOR

IFVGC

DIG_IF

TFVL2

TFVH1

TFVH2

TFU1

TFU2A

TFU2B

TFU3

LEXT

RFINL

LDOBYP

VCCTFVL1

27282930 26 24 23 22

MAX3544

TRACKING

FILTER

1 2

RFINH

RFGND1

PDET

4 5 6 7

CCIF

RFVGC

NOTE: LAYOUT FITS 25mm x 20mm ON 2-LAYER BOARD WITH DEVICE PLACEMENT ON TOP SIDE ONLY.

_______________________________________________________________ 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.

Multiband Digital Television Tuner

ABSOLUTE MAXIMUM RATINGS

VCC to GND ..........................................................-0.3V to +3.6V

RFINL, RFINH, IFIN+, IFIN-, DTVOUT+, DTVOUT-,

IFOUT1A, IFOUT1B .............................. -0.3V to (V

SDA, SCLK, IFAGC, RFVGA ................................ -0.3V to +3.6V

Short-Circuit Protection: DTVOUT+, DTVOUT-,

IFOUT1A, IFOUT1B .................................................. Indefinite

RF Input Power .............................................................. +10dBm

MAX3544

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

+ 0.3V)

DC ELECTRICAL CHARACTERISTICS

(MAX3544 Evaluation Kit, VCC = 3.1V to 3.5V, TA = 0NC to +70NC, registers set according to Table 1. Typical values are at VCC =

3.3V, TA = +25NC, unless otherwise noted.) (Note 1)

PARAMETER CONDITIONS MIN TYP MAX UNITS

SUPPLY VOLTAGE AND CURRENT

Supply Voltage 3.1 3.5 V

Supply Current

RF and IF VGC Input Bias Current

RF and IF VGC Control Voltage Maximum gain 3.0 V RF and IF VGC Control Voltage Minimum gain 0.5 V

SERIAL INTERFACE

Input Logic-Level Low

Input Logic-Level High

Output Logic-Level Low 3mA sink current 0.4 V

Output Logic-Level High

Maximum Clock Rate 400 kHz

IF VGA enabled 225 270 Standby (REF oscillator on) R08[7] = 1 5

At 0.5V to 3.0V DC

Continuous Power Dissipation (TA = +70NC)

(derate 35.7mW/NC above +70NC).............................2857mW

Operating Temperature Range ............................. 0NC to +70NC

Junction Temperature .....................................................+150NC

Storage Temperature Range ............................ -65NC to +165NC

Lead Temperature (soldering, 10s) ................................+300NC

Soldering Temperature (reflow) ......................................+260NC

-100 to +100

0.3 x V

0.7 x V

VCC -

0.5V

AC ELECTRICAL CHARACTERISTICS

(MAX3544 Evaluation Kit, RF center frequency = 666MHz, IF center frequency = 36.15MHz, registers set according to Table 1, f

= 16MHz, V

REF

PARAMETER CONDITIONS MIN TYP MAX UNITS

OVERALL REQUIREMENTS (RF INPUT TO IF OUTPUT)

RFINL Operating Frequency Range

RFINH Operating Frequency Range

Maximum Voltage Gain to IFOUT1

2 ______________________________________________________________________________________

RFVGC

= V

= 3.0V, VCC = 3.3V, TA = +25NC, unless otherwise noted.)

IFVGC

Tunable frequency range 47 345 MHz

Tunable frequency range 345 862 MHz

DVB-T mode (see Table 1) 50 dB

Multiband Digital Television Tuner

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX3544 Evaluation Kit, RF center frequency = 666MHz, IF center frequency = 36.15MHz, registers set according to Table 1, f

= 16MHz, V

REF

PARAMETER CONDITIONS MIN TYP MAX UNITS

RF Gain Control Range (gain at V Noise Figure 4 dB

Image Rejection

IF VARIABLE-GAIN AMPLIFIER

Maximum Voltage Gain

Minimum Voltage Gain

In-Channel Output V1dB 36.15MHz CW output signal > 2.5 V

DETECTOR

Wideband Detector Input-Referred Attack Point

Narrowband Detector Input-Referred Attack Point

SIGMA-DELTA FRAC-N SYNTHESIZER

N-Divider Value 19 251 Fractional-N Resolution 20 Bits Phase-Detector Frequency f Phase-Detector Frequency f

REFERENCE OSCILLATOR

Frequency (Note 2) 16 32 MHz External Overdrive Level AC-coupled sine-wave input 0.5 1.5 V

REFERENCE OSCILLATOR OUTPUT BUFFER

Output Frequency /1, /4 modes 4 4 f Output Level

Note 1: Guaranteed by production test at +25NC. 0NC and +70NC are guaranteed by design and characterization. Note 2: Guaranteed by design and characterization.

RFVGC

= V

= 3.0V, VCC = 3.3V, TA = +25NC, unless otherwise noted.)

IFVGC

= 3.0V) - (gain at V

RFVGC

Image applied at 77.8MHz above desired channel’s center frequency

Output load impedance > 2kI||3pF, differential load

Output load impedance > 2kI||3pF, differential load, V

= 0.5V

IFVGC

Programmable, R0B[6:4] = 100, CW input signal -36 dBm

Programmable, R0B[2:0] = 011, CW input signal -47 dBm

/2 8 10.5 MHz

XTAL

/1 16 21 MHz

XTAL

Load Impedance > 20kI||3pF

= 0.5V) 53 dB

RFVGC

47MHz to 470MHz > 70

470MHz to 862MHz > 65

60 dB

19 dB

1.1 V

XTAL

P-P

MHz

P-P

MAX3544

_______________________________________________________________________________________ 3

Multiband Digital Television Tuner

Typical Register Summary

Table 1 shows register settings to configure the MAX3544 for operation with a 16MHz crystal frequency and 666MHz RF frequency with a differential LC bandpass filter.

Table 1. Typical Register Settings

MAX3544

R00 0x00 VCO 4C R01 0x01 NDIV INT 2B R02 0x02 NDIV FRAC2 8E R03 0x03 NDIV FRAC1 26 R04 0x04 NDIV FRAC0 (VAS Trigger) 66 R05 0x05 MODE CTRL D8 R06 0x06 TFS Calculated from ROM values R07 0x07 TFP Calculated from ROM values R08 0x08 SHUTDOWN 00 R09 0x09 REF CONFIG 0A R0A 0x0A VAS CONFIG 16

R0B 0x0B PWRDET CFG1 43 R0C 0x0C PWRDET CFG2 01 R0D 0x0D FILT CF ADJ Read from ROM R0E 0x0E ROM ADDR 00

R0F 0x0F IRHR Read from ROM

R10 0x10 ROM READBACK Read only

R11 0x11 VAS STATUS Read only

R12 0x12 GEN STATUS Read only

R13 0x13 BIAS ADJ 56

R14 0x14 TEST1 40

R15 0x15 ROM WRITE DATA Maxim use only

DVB-T MODE, 8MHz

DIFFERENTIAL IF

(hex)

4 ______________________________________________________________________________________

Multiband Digital Television Tuner

Typical Operating Characteristics

(MAX3544 Evaluation Kit, VCC = 3.3V, TA = +25NC, registers set according to Table 1, unless otherwise noted.)

MAX3544

CASCADED VOLTAGE GAIN

vs. FREQUENCY

100

VOLTAGE GAIN (dB)

0 900

FREQUENCY (MHz)

+70°C

CASCADED VOLTAGE GAIN

vs. IFVGC VOLTAGE

100

fRF = 666MHz

VOLTAGE GAIN (dB)

0.5 3.0 IFVGC VOLTAGE (V)

0°C

+70°C

0°C

+25°C

DVB-T MODE

800700100 200 300 500400 600

+25°C

DVB-T MODE

2.52.01.51.0

MAX3544 toc01

MAX3544 toc03

CASCADED VOLTAGE GAIN

vs. RFVGC VOLTAGE

100

fRF = 666MHz

VOLTAGE GAIN (dB)

0.5 3.0

0°C

+70°C

RFVGC VOLTAGE (V)

NOISE FIGURE

vs. FREQUENCY

NOISE FIGURE (dB)

INPUT DIPLEXER CROSSOVER

FREQUENCY IS 345MHz

+25°C

0 900

FREQUENCY (MHz)

MAX3544 toc02

+25°C

DVB-T MODE

2.52.01.0 1.5

MAX3544 toc04

800700500 600200 300 400100

DVB-T SENSITIVITY vs. FREQUENCY

-70 64QAM (3/4CR, 1/4GI, 8K, 8MHz), BER < 2e-4

-72

-74

-76

-78

-80

-82

SENSITIVITY (dBm)

-84

-86

MEASURED MAX3544

-88

-90

0 900

NORDIG SPECIFICATION

FREQUENCY (MHz)

MAX3544 toc05

800700500 600200 300 400100

_______________________________________________________________________________________ 5

Multiband Digital Television Tuner

Typical Operating Characteristics (continued)

(MAX3544 Evaluation Kit, VCC = 3.3V, TA = +25NC, registers set according to Table 1, unless otherwise noted.)

-20

MAX3544

-25

-30

-35

-40

DESIRED/BLOCKER (dB)

-45

-50

-55

-25

-30

-35

-40

-45

-50

-55

INPUT-REFERRED ATTACK POINT (dBm)

-60

DVB-T DIGITAL BLOCKER HANDLING

vs. BLOCKER CHANNEL

64QAM (3/4CR, 1/4GI, 8K, 8MHz), BER < 2e-4

NORDIG SPECIFICATION

MEASURED MAX3544

-4 9 RELATIVE BLOCKER CHANNEL

876543210-1-2-3

DETECTOR ATTACK POINT

vs. DETECTOR THRESHOLD SETTING

fRF = 666MHz, CW TONE, DVB-T MODE

WIDEBAND DETECTOR

NARROWBAND DETECTOR

0 7

DETECTOR THRESHOLD SETTING

654321

MAX3544 toc06

MAX3544 toc08

IMAGE REJECTION

vs. FREQUENCY

100

IMAGE REJECTION (dB)

0 900800

+70°C

FREQUENCY (MHz)

REFOUT VOLTAGE vs. TIME

0.9 f

= 16MHz

XTAL

0.6

0.3

-0.3

REFOUT VOLTAGE (V)

-0.6

-0.9 0 0.5

/1 MODE (16MHz)

/4 MODE (4MHz)

TIME (µs)

0°C

+25°C

DVB-T MODE

700600500400300200100

0.40.30.20.1

MAX3544 toc07

MAX3544 toc09

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