MAXIM MAX3543 Technical data

19-4985; Rev 2; 7/10

EVALUATION KIT

AVAILABLE

General Description

The MAX3543 hybrid broadband single-conversion tele­vision tuner is designed for use in analog (PAL, SECAM)
+ digital (DVB-T, 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 MAX3543 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;
separate analog and digital IF outputs; and a crystal
oscillator.

The MAX3543 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 +
PAL/SECAM

DVB-C + PAL/SECAM

DTMB/GB20600 + PAL

ATSC + NTSC

Multiband Analog and

Digital Television Tuner

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

MAX3543CTL+

0NC to +70NC

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

40 TQFN-EP*

MAX3543

Block Diagram/Typical Application Circuit/Pin Configuration

CC

TUNE

GND

FRAC-N

RFGND2

25

PLL

IFOUT1A

SDA

IFOUT1B

REFDIV

XTALE

/N

8 9 10

ADDR

IFVGC

LC BANDPASS

I2C

FILTER

XTALB

21

IFIN-

20

19

18

17

16

15

14

13

12

11

SCL

V

CCDIG

REFOUT

GND

DTVOUT+

DTVOUT-

IFOUT2

V

CC

GND

IFIN+

REF_OUT

2

C

I

DIGITAL

DEMODULATOR

OR

A + D

DEMODULATOR

IFVGC

DIG_IF

ANA_IF

ANALOG

DEMODULATOR

TFVL2

TFVH1

TFVH2

TFU1

TFU2A

TFU2B

TFU3

LEXT

RFINL

LDOBYP

VCCTFVL1

V

27282930 26 24 23 22

31

32

33

MAX3543

34

35

TRACKING

36

FILTER

37

38

V

CC

39

40

+

1 2

RFINH

RFGND1

PDET

4 5 6 7

3

CCIF

V

RFVGC

_______________________________________________________________ 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 Analog and
Digital Television Tuner

ABSOLUTE MAXIMUM RATINGS

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

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

IFOUT1A, IFOUT1B, IFOUT2 ............... -0.3V to (V

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

Short-Circuit Protection: DTVOUT+, DTVOUT-,

IFOUT1A, IFOUT1B, IFOUT2 .................................... Indefinite

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

MAX3543

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.

CC

+ 0.3V)

DC ELECTRICAL CHARACTERISTICS

(MAX3543 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, T

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

A

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 (T

(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

0.7 x
V

CC

V

CC

0.5V

= +70NC)

A

-100 to

-

+100

0.3 x
V

CC

mA

FA

V

V

V

AC ELECTRICAL CHARACTERISTICS

(MAX3543 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 Analog and

Digital Television Tuner

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX3543 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,

= 0.5V

V

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

dB

P-P

P-P

MHz

P-P

MAX3543

_______________________________________________________________________________________ 3

Multiband Analog and
Digital Television Tuner

Typical Register Summary

Table 1 shows register settings to configure the MAX3543
for operation with a 16MHz crystal frequency and
666MHz RF frequency with a differential LC bandpass
filter.

Table 1. Typical Register Settings

MAX3543

REGISTER

NAME

R00 0x00 VCO 4C 4C
R01 0x01 NDIV INT 2B 57
R02 0x02 NDIV FRAC2 8E 9C
R03 0x03 NDIV FRAC1 26 4C
R04 0x04 NDIV FRAC0 (VAS Trigger) 66 CD
R05 0x05 MODE CTRL D8 DA
R06 0x06 TFS Calculated from ROM values Calculated from ROM values
R07 0x07 TFP Calculated from ROM values Calculated from ROM values
R08 0x08 SHUTDOWN 00 08
R09 0x09 REF CONFIG 0A 0A
R0A 0x0A VAS CONFIG 16 16

R0B 0x0B PWRDET CFG1 43 43
R0C 0x0C PWRDET CFG2 01 03
R0D 0x0D FILT CF ADJ Read from ROM Read from ROM
R0E 0x0E ROM ADDR 00 00

R0F 0x0F IRHR Read from ROM Read from ROM

R10 0x10 ROM READBACK Read only Read only
R11 0x11 VAS STATUS Read only Read only
R12 0x12 GEN STATUS Read only Read only
R13 0x13 BIAS ADJ 56 16
R14 0x14 TEST1 40 40
R15 0x15 ROM WRITE DATA Maxim use only Maxim use only

REGISTER

ADDRESS

REGISTER FUNCTION

DVB-T MODE, 8MHz

DIFFERENTIAL IF

(hex)

PAL MODE,

ATV OUTPUT

(hex)

4 ______________________________________________________________________________________

Multiband Analog and

Digital Television Tuner

Typical Operating Characteristics

(MAX3543 Evaluation Kit, VCC = 3.3V, TA = +25NC, registers set according to Table 1, unless otherwise noted.)

MAX3543

CASCADED DTV VOLTAGE GAIN

vs. FREQUENCY

100

95

90

85

80

75

VOLTAGE GAIN (dB)

70

65

60

0 900

+70°C

FREQUENCY (MHz)

CASCADED DTV VOLTAGE GAIN

vs. IFVGC VOLTAGE

100

fRF = 666MHz

90

80

70

60

VOLTAGE GAIN (dB)

50

40

30

0.5 3.0
IFVGC VOLTAGE (V)

0°C

+70°C

ATV VOLTAGE GAIN

vs. RFVGC VOLTAGE

60

fRF = 666MHz

50

40

30

20

10

VOLTAGE GAIN (dB)

0

-10

-20

0.5 3.0

0°C

+70°C

RFVGC VOLTAGE (V)

0°C

+25°C

DVB-T MODE

800700100 200 300 500400 600

+25°C

DVB-T MODE

2.52.01.51.0

+25°C

ATV MODE

2.52.01.0 1.5

MAX3543 toc01

MAX3543 toc03

MAX3543 toc05

CASCADED DTV VOLTAGE GAIN

vs. RFVGC VOLTAGE

100

fRF = 666MHz

90

80

70

60

50

VOLTAGE GAIN (dB)

40

30

20

0.5 3.0

0°C

+70°C

RFVGC VOLTAGE (V)

ATV VOLTAGE GAIN

vs. FREQUENCY

60

55

50

45

40

35

VOLTAGE GAIN (dB)

30

25

20

0 900

+25°C

+70°C

FREQUENCY (MHz)

NOISE FIGURE

vs. FREQUENCY

10

9

8

7

6

5

4

NOISE FIGURE (dB)

3

2

1

0

INPUT DIPLEXER CROSSOVER

FREQUENCY IS 345MHz

+25°C

0 900

FREQUENCY (MHz)

+25°C

DVB-T MODE

2.52.01.0 1.5

0°C

ATV MODE

800700100 200 300 500400 600

ATV MODE

800700500 600200 300 400100

MAX3543 toc02

MAX3543 toc04

MAX3543 toc06

_______________________________________________________________________________________ 5

Multiband Analog and
Digital Television Tuner

Typical Operating Characteristics (continued)

(MAX3543 Evaluation Kit, VCC = 3.3V, TA = +25NC, registers set according to Table 1, unless otherwise noted.)

-70

MAX3543

-72

-74

-76

-78

-80

-82

SENSITIVITY (dBm)

-84

-86

-88

-90

100

90

80

70

60

IMAGE REJECTION (dB)

50

40

30

DVB-T SENSITIVITY vs. FREQUENCY

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

NORDIG SPECIFICATION

MEASURED MAX3543

0 900

FREQUENCY (MHz)

800700500 600200 300 400100

IMAGE REJECTION

vs. FREQUENCY

0°C

+70°C

+25°C

DVB-T MODE

0 900800

FREQUENCY (MHz)

700600500400300200100

MAX3543 toc07

MAX3543 toc09

DVB-T DIGITAL BLOCKER HANDLING

vs. BLOCKER CHANNEL

-20
64QAM (3/4CR, 1/4GI, 8K, 8MHz), BER < 2e-4

-25

-30

-35

-40

DESIRED/BLOCKER (dB)

-45

-50

MEASURED MAX3543

-55

-4 9
RELATIVE BLOCKER CHANNEL

NORDIG SPECIFICATION

DETECTOR ATTACK POINT

vs. DETECTOR THRESHOLD SETTING

-25
fRF = 666MHz, CW TONE, DVB-T MODE

-30

-35

-40

-45

-50

-55

INPUT-REFERRED ATTACK POINT (dBm)

-60

WIDEBAND DETECTOR

NARROWBAND DETECTOR

0 7

DETECTOR THRESHOLD SETTING

MAX3543 toc08

876543210-1-2-3

MAX3543 toc10

654321

0.9
f

= 16MHz

XTAL

0.6

0.3

0

-0.3

REFOUT VOLTAGE (V)

-0.6

-0.9
0 0.5

/1 MODE (16MHz)

MAX3543 toc11

/4 MODE (4MHz)

0.40.30.20.1

TIME (µs)

6 ______________________________________________________________________________________

REFOUT VOLTAGE vs. TIME

Multiband Analog and

Digital Television Tuner

Pin Description

PIN NAME FUNCTION

1 RFINH

2 RFGND1

3 RFVGC RF VGA Gain Control Voltage. Accepts a DC voltage from 0.5V to 3V.
4 V

5 RFGND2

6 IFOUT1A

7 IFOUT1B

8 IFVGC IF VGA Gain Control Voltage. Accepts a DC voltage from 0.5V to 3V.

9 ADDR

10, 11 IFIN-, IFIN+ Differential IF VGA Input. Connect to the IF filter output.

12, 17, 26 GND Ground. Connect pin to paddle ground to minimize trace inductance.

13, 27,

29, 39

14 IFOUT2

15, 16

18 REFOUT Crystal Output to Drive Baseband IC. Output frequency is f
19 V

20 SCL

21 XTALB

22 XTALE Crystal Oscillator Emitter. Connect a capacitor to ground and a capacitor to XTALB.

23 REFDIV

24 SDA

25 TUNE PLL Charge-Pump Output and TUNE Input. Connect to the PLL loop filter.
28 LDOBYP

CCIF

V

CC

DTVOUT-,
DTVOUT+

CCDIG

High-Frequency RF Input. Matched to 75I over the operating band. Requires a DC-blocking capacitor.

RF Ground. Bypass to the PCB’s ground plane with a 1000pF capacitor. Keep traces as short as
possible to minimize inductance to ground plane. Do not connect RFGND1 and RFGND2 together.

IF Power Supply. Requires a 600I series ferrite bead to a bypass capacitor to ground.

RF Ground. Bypass to the PCB’s ground plane with a 1000pF capacitor. Keep traces as short as
possible to minimize inductance to ground plane. Do not connect RFGND1 and RFGND2 together.

Dual-Mode DTV IF Output. In single-ended mode, this pin is the IF signal output. In differential mode, this
pin is the positive terminal of the differential IF output.

Dual-Mode DTV IF Output. In single-ended mode, this pin is the SAW filter bandwidth switch. In
differential mode, this pin is the negative terminal of the differential IF output.

2-Wire Serial-Interface Address Line. This pin sets the device address for the I
interface. There are three selectable addresses based on the state of this pin: logic-low, logic-high, or
unconnected.

Power-Supply Connections. Bypass each supply pin with a separate 1000pF capacitor to ground.

Single-Ended IF Output. Connect to the analog demodulator input. Requires a 1000pF DC-blocking
capacitor.

Differential IF VGA Output. Connect to the demodulator input. Requires a 1000pF DC-blocking capacitor.

or f

XTAL

Digital Supply. Requires a 15I series resistor to a 1FF bypass capacitor.

2-Wire Serial Clock Interface. Connect to the serial bus and ensure the bus includes an approximately
5kI pullup resistor.

Crystal Oscillator Base. Connect to the crystal through a DC-blocking capacitor and connect a capacitor
to XTALE.

Reference Frequency Divider Control. Three modes are available depending on the state of this pin:
high = f

register is not guaranteed; therefore, unconnected mode should only be used if the controller can
reprogram I

2-Wire Serial Data Interface. Connect to serial bus and ensure the bus includes an approximately 5kI
pullup resistor.

Bypass for On-Chip VCO LDO. Bypass to ground with a 0.47FF capacitor.

/1, low = f

XTAL

2

C in any of the divider settings.

/4, unconnected = state determined by register. Note: Power-up state of

XTAL

XTAL

2

C-compatible serial

/4.

MAX3543

_______________________________________________________________________________________ 7

Multiband Analog and
Digital Television Tuner

Pin Description (continued)

PIN NAME FUNCTION

30 TFVL1* VHF Low Tracking Filter 1
31 TFVL2* VHF Low Tracking Filter 2
32 TFVH1* VHF High Tracking Filter 1
33 TFVH2* VHF High Tracking Filter 2

MAX3543

34 TFU1* UHF Tracking Filter 1
35 TFU2A* UHF Tracking Filter 2A
36 TFU2B* UHF Tracking Filter 2B
37 TFU3* UHF Tracking Filter 3
38 LEXT* RF VGA Supply Voltage. Connect through a 270nH pullup inductor to V
40 RFINL

— EP (GND) Exposed Paddle Ground. Solder evenly to the PCB ground plane for proper operation.

*Improper placement of these inductors degrades image rejection, gain, and noise figure. Copy Maxim reference design layout

exactly in this area.

Low-Frequency RF Input. Matched to 75I over the operating band. Requires a DC-blocking capacitor.

CC

.

Detailed Description

I2C-Compatible Serial Interface

The MAX3543 uses a 2-wire I2C-compatible serial inter­face consisting of a serial data line (SDA) and a serial
clock line (SCL). SDA and SCL facilitate bidirectional
communication between the MAX3543 and the master
at clock frequencies up to 400kHz. The master initiates a
data transfer on the bus and generates the SCL signal to
permit data transfer. The MAX3543 behaves as a slave
device that transfers and receives data to and from the
master. Pull SDA and SCL high with external pullup resis­tors for proper bus operation.

One bit is transferred during each SCL clock cycle. A
minimum of nine clock cycles is required to transfer a
byte in or out of the MAX3543 (8 data bits and an ACK/
NACK). The data on SDA must remain stable during the
high period of the SCL clock pulse. Changes in SDA
while SCL is high and stable are considered control sig­nals (see the START and STOP Conditions section). Both
SDA and SCL remain high when the bus is not busy.

START and STOP Conditions

The master initiates a transmission with a START condi­tion (S), which is a high-to-low transition on SDA while
SCL is high. The master terminates a transmission with a
STOP condition (P), which is a low-to-high transition on
SDA while SCL is high.

Acknowledge and Not-Acknowledge Conditions

Data transfers are framed with an acknowledge bit (ACK)
or a not-acknowledge bit (NACK). Both the master and
the MAX3543 (slave) generate acknowledge bits. To
generate an acknowledge, the receiving device must
pull SDA low before the rising edge of the acknowledge­related clock pulse (ninth pulse) and keep it low during
the high period of the clock pulse.

To generate a not-acknowledge condition, the receiver
allows SDA to be pulled high before the rising edge
of the acknowledge-related clock pulse, and leaves
SDA high during the high period of the clock pulse.
Monitoring the acknowledge bits allows for detection of
unsuccessful data transfers. An unsuccessful data trans­fer happens if a receiving device is busy or if a system
fault has occurred. In the event of an unsuccessful data
transfer, the bus master must reattempt communication
at a later time.

Slave Address

The MAX3543 has a 7-bit slave address plus one R/W
bit. These 8 bits must be sent to the device following a
START condition to initiate communication. The slave
address is determined by the state of the ADDR pin as
shown in Table 2.

Table 2. Address Configurations

ADDR PIN ADDR2 ADDR1

0 0 0 0xC0 0xC1

Unconnected 0 1 0xC2 0xC3

1 1 0 0xC4 0xC5

WRITE

ADDRESS

READ

ADDRESS

8 ______________________________________________________________________________________

SLAVE ADDRESS

Multiband Analog and

Digital Television Tuner

MAX3543

S 1 1 0 0 0 ADDR2 ADDR1 R/W ACK

SDA

SCL

NOTE: TIMING PARAMETERS CONFORM WITH I

1 2 3 4 5 6 7 8 9

2

C BUS SPECIFICATIONS.

Figure 1. MAX3543 Slave Address Byte. Example shows read address 0x0C1 (ADDR pin grounded).

The MAX3543 continuously awaits a START condition fol­lowed by its slave address. When the device recognizes

Figure 2 illustrates an example in which registers 0, 1,

and 2 are written with 0x0E, 0xD8, and 0xE1, respectively.
its slave address, it acknowledges by pulling the SDA
line low for one clock period; it is ready to accept or send
data depending on the R/W bit (Figure 1).

Write Cycle

When addressed with a write command, the MAX3543
allows the master to write to a single register or to mul­tiple successive registers.

A write cycle begins with the bus master issuing a START
condition followed by the 7 slave address bits and a write
bit (R/W = 0). The MAX3543 issues an ACK if the slave
address byte is successfully received. The bus master
must then send to the slave the address of the first reg­ister it wishes to write to. If the slave acknowledges the
address, the master can then write 1 byte to the register
at the specified address. Data is written beginning with
the most significant bit. The MAX3543 again issues an
ACK if the data is successfully written to the register.
The master can continue to write data to the successive
internal registers with the MAX3543 acknowledging each
successful transfer, or it can terminate transmission by

A read cycle begins with the bus master issuing a START

condition followed by the 7 slave address bits and a

write bit (R/W = 0). The MAX3543 issues an ACK if the

slave address byte is successfully received. The master

then sends the 8-bit address of the first register that it

wishes to read. The MAX3543 then issues another ACK.

Next, the master must issue a START condition followed

by the 7 slave address bits and a read bit (R/W = 1). The

MAX3543 issues an ACK if it successfully recognizes

its address and begins sending data from the speci-

fied register address starting with the most significant

bit (MSB). Data is clocked out of the MAX3543 on the

rising edge of SCL. On the ninth rising edge of SCL, the

master can issue an ACK and continue reading succes-

sive registers or it can issue a NACK followed by a STOP

condition to terminate transmission. The read cycle does

not terminate until the master issues a STOP condition.

Figure 3 illustrates an example in which registers 0 and

1 are read back.
issuing a STOP condition. The write cycle does not termi-

nate until the master issues a STOP condition.

P

Read Cycle

WRITE DEVICE

START

ADDRESS

11000[ADDR2][ADDR1] 0 —— —— —

R/W

WRITE REGISTER

ACK ACK ACK ACK ACK

ADDRESS

0x00

WRITE DATA TO

REGISTER 0x00

0x0E

WRITE DATA TO

REGISTER 0x01

Figure 2. Example: Write registers 0, 1, and 2 with 0x0E, 0xD8, and 0xE1, respectively.

WRITE DEVICE

START

110000[ADDR2][ADDR1]

ADDRESS

R/W

ADDRESS

0x00

WRITE 1ST REGISTER

ACK NACK

ACK

—

START

WRITE DEVICE

110000[ADDR2][ADDR1]0 ——

ADDRESS

R/W

1 —

Figure 3. Example: Read data from registers 0 and 1.

_______________________________________________________________________________________ 9

0xD8

ACK

READ DATA

REG 0

D7–D0

WRITE DATA TO

REGISTER 0x02

0xE1

READ DATA

ACK

REG 1

—

D7–D0

STOP

STOP

Multiband Analog and
Digital Television Tuner

Control Register Description

The MAX3543 includes 18 programmable registers,
two status registers (read only), one register for ROM
readback (read only), and one for Maxim use only. The
programmable registers configure the VCO settings, PLL
settings, detector and AGC settings, state control, bias
adjustments, individual block shutdown, and the track­ing filter frequency. These programmable registers are

MAX3543

also readable. The read-only registers include two status
registers and a ROM table data register.

Typical bit settings are provided only for user conve-

nience and are not guaranteed at power-up. All registers

must be written no earlier than 100Fs after power-up

or recovery from a brownout event (i.e., when

drops below 1V) to initialize the registers. Then follow

up by rewriting the registers needed for channel/fre-

quency programming (i.e., registers R00–R04). The typi-

cal values listed in Table 3 configure the MAX3543 for

DTV reception with 16MHz crystal, 8MHz channel BW,

36.15MHz IF center frequency, differential LC bandpass

filter, and 666MHz RF center frequency.

Table 3. Register Configuration

REG

ADDR

0x00 R00 VCO 4C VCO[1:0] VSUB[3:0] VDIV[1:0]
0x01 R01 NDIV INT 2B NINT[7:0]
0x02 R02 NDIV FRAC2 8E CPS CP RDIV[1:0] F[19:16]
0x03 R03 NDIV FRAC1 26 F[15:8]

0x04 R04

0x05 R05 MODE CTRL D8 LNA2G RFIN RFLPF CHBW TFB[1:0] IFSEL[1:0]
0x06 R06 TFS 30 TFS[7:0]
0x07 R07 TFP 12 — — TFP[5:0]
0x08 R08 SHUTDOWN 00 STBY SDRF SDMIX SDIF SDIFVG SDPD SDSYN SDVCO

0x09 R09 REF CONFIG 0A — — — CPLIN[1:0] ALC[1:0] XODIV
0x0A R0A VAS CONFIG 17 LFDIV[1:0] VASS VAS ADL ADE LTC[1:0]
0x0B R0B PWRDET CFG1 43 DWPD WPDA[2:0] DNPD NPDA[2:0]
0x0C R0C PWRDET CFG2 01 — — — — — PULLUP RFIFD[1:0]
0x0D R0D FILT CF ADJ ROM — — CFSET[5:0]
0x0E R0E ROM ADDR 00 — — — — ROMA[3:0]

0x0F R0F IRHR ROM IRHR[7:0]

0x10 R10 ROM READBACK RO ROMR[7:0]

0x11 R11 VAS STATUS RO VVCO[1:0] VVSB[3:0] VASA VASE

0x12 R12 GEN STATUS RO — — VCP TRIM POR VCOADC[2:0]

0x13 R13 BIAS ADJ 56 — MIXGM LNA2B[1:0] MIXB[1:0] FILTB IFVGAB

0x14 R14 TEST1 40 RESERVED

0x15 R15 ROM WRITE DATA 00 ROMW[7:0]

Note: Registers should be written in the order of ascending addresses. When changing frequency, write R00 to R07 in order of
ascending addresses to ensure proper VCO setup.

REG

NAME

REGISTER
FUNCTION

NDIV FRAC0

(VAS Trigger)

TYPICAL
SETTING

MSB BIT LOCATION LSB

7 6 5 4 3 2 1 0

66 F[7:0]

V

CC

10 _____________________________________________________________________________________

Multiband Analog and

Digital Television Tuner

Register and Bit Descriptions

Table 4. R00: VCO Register—VCO and LO Divider Control (Address: 00h)

BIT NAME

VCO[1:0] 7:6 01

VSUB[3:0] 5:2 0011

VDIV[1:0] 1:0 00

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

FUNCTION

VCO select. Selects one of three VCOs when VAS = 0, or selects the VCO starting
band when VASS = 0.
00 = Selects VCO1 (approximately 2200MHz to 2800MHz)
01 = Selects VCO2 (approximately 2800MHz to 3500MHz)
10 = Selects VCO3 (approximately 3500MHz to 4400MHz)
11 = VCO shutdown

VCO sub-band select. Selects one of 16 possible VCO sub-bands when VAS = 0,
or selects the VCO starting sub-band when VASS = 0.
0000 = Selects SB0
…
1111 = Selects SB15

VCO divider ratio select.
00 = Sets VCO divider to 4 (use when fLO > 550MHz)
01 = Sets VCO divider to 8 (use when 275MHz < f
10 = Sets VCO divider to 16 (use when 137.5MHz < f
11 = Sets VCO divider to 32 (use when f

< 137.5MHz)

LO

< 550MHz)

LO

< 275MHz)

LO

MAX3543

Table 5. R01: NDIV INT Register—Integer Part of N-Divider (Address: 01h)

BIT NAME

NINT[7:0] 7:0

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

0010
1011

FUNCTION

Sets the PLL integer divide number (N)

Table 6. R02: NDIV FRAC2 Register—N-Divider Fractional Part [19:16] and R-Divider
(Address: 02h)

BIT

NAME

CPS 7 1

CP 6 0 For Maxim use only

RDIV[1:0] 5:4 00

F[19:16] 3:0 1110 N-divider fractional part bits 19:16 (out of 19:0)

BIT LOCATION

(0 = LSB)

TYPICAL

SETTING

FUNCTION

Sets the charge-pump current-selection mode between automatic and manual.
Must set to 1 for proper operation.

Reference divider.
00 = /1
01 = /2
1X = Maxim use only

______________________________________________________________________________________ 11

Multiband Analog and
Digital Television Tuner

Table 7. R03: NDIV FRAC1 Register—N-Divider Fractional Part [15:8] (Address: 03h)

BIT NAME

F[15:8] 7:0 0010 0110 N-divider fractional part bits 15:8 (out of 19:0)

BIT LOCATION

(0 = LSB)

TYPICAL

SETTING

FUNCTION

Table 8. R04: NDIV FRAC0 Register—N-Divider Fractional Part [7:0] (Address: 04h)

MAX3543

BIT NAME

F[7:0] 7:0

BIT LOCATION

(0 = LSB)

Table 9. R05: MODE CTRL Register—Mode Control (Address: 05h)

BIT NAME

LNA2G 7 1

RFIN 6 1

RFLPF 5 0

CHBW 4 1

TFB[1:0] 3:2 10

IFSEL[1:0] 1:0 00

BIT LOCATION

(0 = LSB)

TYPICAL

SETTING

0110
0110

TYPICAL

SETTING

FUNCTION

N-divider fractional part bits 7:0 (out of 19:0). Writing this register also triggers VCO
autoselect (VAS).

FUNCTION

Premixer gain configuration. Set to 1 for nominal gain. Set to 0 for approximately

2.5dB reduced gain.

0 = Selects RFINL input (for f
1 = Selects RFINH input (for f

0 = Disables RF LPF (for f
1 = Enables RF LPF (for f

0 = Sets IF BW to 7MHz mode
1 = Sets IF BW to 8MHz mode

Selects the tracking filter band of operation.
00 = VHFL (for f
01 = VHFH (for 196MHz < f
10 = UHF (for f
11 = Unused

IF output selection.
00 = IFOUT1 DTV differential mode (for driving a differential bandpass filter)
01 = IFOUT1 DTV single-ended (for driving a switched BW single-ended SAW filter)
10 = IFOUT2 ATV single-ended
11 = Unused

< 196MHz)

RF

> 440MHz)

RF

< 345MHz)

RF

> 345MHz)

RF

> 110MHz)

RF

< 110MHz)

RF

< 440MHz

RF

Table 10. R06: TFS Register—Tracking Filter Series Capacitor (Address: 06h)

BIT

NAME

TFS[7:0] 7:0 N/A

12 _____________________________________________________________________________________

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

FUNCTION

Programs series capacitor values in the tracking filter. The value is determined
from the values in the ROM table applied to an equation executed in the Maxim­provided device driver code.

Multiband Analog and

Digital Television Tuner

Table 11. R07: TFP Register—Tracking Filter Parallel Capacitor (Address: 07h)

MAX3543

BIT NAME

EMPTY 7:6 00 Empty

TFP[5:0] 5:0 N/A

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

FUNCTION

Programs parallel capacitor values in the tracking filter. The value is determined
from the values in the ROM table applied to an equation executed in the Maxim­provided device driver code.

Table 12. R08: SHUTDOWN Register—Shutdown Control (Address: 08h)

BIT NAME

STBY 7 0

SDRF 6 0 RF shutdown. Must set to 0 for proper operation.

SDMIX 5 0 Mixer shutdown. Must set to 0 for proper operation.

SDIF 4 0 IF shutdown. Must set to 0 for proper operation.

SDIFVG 3 0

SDPD 2 0 Power-detector shutdown. Must set to 0 for proper operation.

SDSYN 1 0 Frequency synthesizer shutdown. Must set to 0 for proper operation.

SDVCO 0 0 VCO shutdown. Must set to 0 for proper operation.

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

FUNCTION

Standby.
1 = All circuits shut down except crystal oscillator and REFOUT

IF VGA shutdown.
0 = IF VGA enabled
1 = IF VGA disabled

Table 13. R09: REF CONFIG Register—Reference Oscillator Configuration (Address: 09h)

BIT NAME

EMPTY 7:5 000 Empty

CPLIN[1:0] 4:3 01 Must set to 01 for proper operation

ALC[1:0] 2:1 01 Must set to 01 for proper operation

XODIV 0 0

BIT LOCATION

(0 = LSB)

______________________________________________________________________________________ 13

TYPICAL
SETTING

FUNCTION

Sets crystal oscillator divider for REFOUT signal when REFDIV pin is unconnected.
0: f
1: f

REFOUT
REFOUT

= f
= f

XTAL
XTAL

/4

Multiband Analog and
Digital Television Tuner

Table 14. R0A: VAS CONFIG Register—VCO Autoselect Configuration (Address: 0Ah)

BIT NAME

LFDIV[1:0] 7:6 00

BIT LOCATION

(0 = LSB)

MAX3543

VASS 5 0

VAS 4 1 Controls the VCO autoselect (VAS) function. Must set to 1 for proper operation.

ADL 3 0

ADE 2 0

LTC[1:0] 1:0 10 Sets the VCO autoselect wait time. Must set to 10 for proper operation.

Note: Only production tested and guaranteed functional in states 0001 0010, 0101 0010, and 1001 0010. All other states are
untested and may not function correctly. Contact Maxim if untested settings will be used in production.

TYPICAL
SETTING

FUNCTION

Sets the low-frequency clock divider.
00 = Use for 16MHz P f
01 = Use for 20MHz P f
10 = Use for 28MHz P f
11 = Unused

Controls the VCO autoselect (VAS) start conditions function.
0 = VAS starts from the current VCO/VCOSB loaded in the VCO[1:0] and VSUB[3:0]
bits (in R00)
1 = VAS starts from the currently used VCO and VCOSB

Enables or disables the VCO tuning voltage ADC latch when the VCO autoselect
(VAS) mode is disabled.
0 = Disables the ADC latch
1 = Latches the ADC value

Enables or disables VCO tuning voltage ADC read when the VCO autoselect (VAS)
mode is disabled.
0 = Disables ADC read
1 = Enables ADC read

< 20MHz

REF

< 28MHz

REF

P 32MHz

REF

Table 15. R0B: PWRDET CFG1 Register—Power-Detector Configuration 1 of 2 (Address: 0Bh)

BIT NAME

DWPD 7 0

WPDA[2:0] 6:4 100

DNPD 3 0

NPDA[2:0] 2:0 011

Note: Only production tested and guaranteed functional in state X100 X011, where X can be either 0 or 1. All other states are
untested and may not function correctly. Contact Maxim if untested settings will be used in production.

14 _____________________________________________________________________________________

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

FUNCTION

Enables or disables wideband power detector.
0 = Enables wideband power detector. Use this state for autonomous RFAGC.
1 = Disables wideband power detector

Sets the wideband power-detector attack point (takeover point).
000 = Min
100 = Nom (see the Typical Operating Characteristics)
111 = Max

Enables or disables narrowband power detector.
0 = Enables narrowband detector. Use this state for autonomous RFAGC.
1 = Disables narrowband detector

Sets the narrowband power-detector attack point (takeover point).
000 = Min
011 = Nom (see the Typical Operating Characteristics)
111 = Max

Multiband Analog and

Digital Television Tuner

Table 16. R0C: PWRDET CFG2 Register—Power-Detector Configuration 2 of 2 (Address: 0Ch)

MAX3543

BIT NAME

EMPTY 7:3 0000 0 Empty

PULLUP 2 0 Must set to 0 for proper operation

RFIFD[1:0] 1:0 01

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

FUNCTION

RF IF AGC diode voltage.
00 = Approximately 0.6V
01 = Approximately 0.95V
10 = Approximately 1.3V
11 = Off

Table 17. R0D: FILT CF ADJ Register—IF Filter Center Frequency and BW Adjustment
(Address: 0Dh)

BIT NAME

EMPTY 7:6 00 Empty

CFSET[5:0] 5:0 ROM

Note: Only production tested and guaranteed functional in factory-trimmed state from ROM table. All other states are untested and
may not function correctly. Contact Maxim if untested settings will be used in production.

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

FUNCTION

Sets the IF filter center frequency and bandwidth. For proper operation, must read
value from ROM address A[5:0] and write that value to this register.

Table 18. R0E: ROM ADDR Register—ROM Address (Address: 0Eh)

BIT NAME

EMPTY 7:4 00 Empty

ROMA[3:0] 3:0 0000

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

FUNCTION

Address bits of the ROM register to be read or written. Must set to 0000 when not
reading the ROM table.

Table 19. R0F: IRHR Register (Address: 0Fh

BIT NAME

IRHR[7:0] 7:0 ROM

Note: Only production tested and guaranteed functional in factory-trimmed state from ROM table. All other states are untested and
may not function correctly.

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

For proper operation, must read value from ROM address B[7:0] and write that
value to this register.

)

FUNCTION

Table 20. R10: ROM READBACK Register—ROM Readback (Address: 10h)

BIT NAME

ROMR[7:0] 7:0 N/A Data bits read from the ROM table address as specified by R0E[3:0]

BIT LOCATION

(0 = LSB)

______________________________________________________________________________________ 15

TYPICAL
SETTING

FUNCTION

Multiband Analog and
Digital Television Tuner

Table 21. R11: VAS STATUS Register—VCO Autoselect Status (Address: 11h)

BIT NAME

VVCO[1:0] 7:6 N/A

VVSB[3:0] 5:2 N/A

MAX3543

VASA 1 N/A

VASE 0 N/A

Note: Not production tested or guaranteed functional.

BIT LOCATION

(0 = LSB)

Table 22. R12: GEN STATUS Register—General Status (Address: 12h)

BIT NAME

EMPTY 7:6 N/A Empty

VCP 5 N/A Maxim use only

TRIM 4 N/A Maxim use only

POR 3 N/A Maxim use only

VCOADC

[2:0]

Note: Not production tested or guaranteed functional.

BIT LOCATION

(0 = LSB)

2:0 N/A

Table 23. R13: BIAS ADJ Register—Bias Adjustments (Address: 13h)

BIT NAME

EMPTY 7 0 Empty
MIXGM 6 1 Mixer gain setting. Set to 0 for ATV mode. Set to 1 for DTV mode.

LNA2B[1:0] 5:4 01

MIXB[1:0] 3:2 01

FILTB 1 1 Must set to 1 for proper operation

IFVGAB 0 0

Note: Only production tested and guaranteed functional in state 0XX1 X11X, where X can be either 0 or 1. All other states are
untested and may not function correctly. Contact Maxim if untested settings will be used in production.

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

TYPICAL

SETTING

TYPICAL
SETTING

FUNCTION

Indicates which VCO has been selected by either the autoselect state machine
or by manual selection when the VSA state machine is disabled. See the R00
description for the VCO[1:0] definition.

Indicates which sub-band of a particular VCO has been selected by either the
autoselect state machine or by manual selection when the VSA state machine is
disabled. See the R00 description for the VSUB[3:0] definition.

Indicates whether VCO autoselection was successful.
0 = Indicates the autoselect function is disabled or unsuccessful VCO selection
1 = Indicates successful VCO autoselection

Status indicator for the autoselect function.
0 = Indicates the autoselect function is active
1 = Indicates the autoselect process is inactive

FUNCTION

VCO tuning voltage indicators.
000 = PLL not in lock, tune to the next lowest sub-band
001 to 110 = PLL in lock
111 = PLL not in lock, tune to the next higher sub-band

FUNCTION

LNA bias.
00 = Unused
01 = Nominal setting. Use for all standards except SECAM L/L’.
10 = Unused
11 = Highest linearity setting. Use for SECAM L/L’.

Mixer bias.
00 = Unused
01 = Nominal setting. Use for all standards except SECAM L/L’.
10 = Unused
11 = Highest linearity setting. Use for SECAM L/L’.

IF VGA bias.
0 = Default
1 = Highest current (approximately nominal + 6mA)

16 _____________________________________________________________________________________

Multiband Analog and

Digital Television Tuner

Table 24. R14: TEST1 Register (Address: 14h)

BIT NAME

RESERVED 7:0

Note: This register is not available to the end user.

BIT LOCATION

(0 = LSB)

Table 25. R15: ROM WRITE DATA Register (Address: 15h)

BIT NAME

ROMW[7:0] 7:0 N/A Maxim use only

Note: This register is not available to the end user.

BIT LOCATION

(0 = LSB)

TYPICAL
SETTING

0100
0000

TYPICAL

SETTING

FUNCTION

Must set to 0100 0000 for proper operation

FUNCTION

MAX3543

Applications Information

RF Inputs and Filters

The MAX3543 features separate low- and high-frequency
inputs. These two inputs are combined to a single input
by an off-chip diplexer circuit as shown in the Typical
Application Circuit. When the desired channel is less
than 345MHz, use RFINL. When the desired input is
greater than 345MHz, use RFINH. Further, when the
desired input is less than 110MHz, an internal lowpass
filter should be enabled to limit high-frequency interfer­ence incident at the mixer input. The lowpass filter is
enabled by the RFLPF bit in R05[5].

Besides selecting the appropriate input port and setting
RFLPF appropriately, one of three tracking filters must
be chosen based on the desired frequency. Set TFB
(R05[3:2]) to select VHFL, VHFH, or UHF tracking filter
bands. Use VHFL when the desired frequency is less
than 196MHz, use VHFH when the desired frequency
is between 196MHz and 440MHz, or use UHF when the
desired frequency is greater than 440MHz.

RF Gain Control

The MAX3543 is designed to control its own RF gain
based on internally measured signal and blocker levels.
The user can adjust the AGC attack points (takeover
points) by setting WDPA and NDPA in register R0B.
Alternatively, the user can control the RF gain by driving
the RFVGC input pin.

VCO and VCO Divider Selection

The MAX3543 frequency synthesizer includes three
VCOs with 16 sub-bands for each VCO. These VCOs
and sub-bands are selected to best center the VCO
near the operating frequency. This selection process is
performed automatically by the VAS circuitry. The Maxim
driver software seeds the VCO starting band for fastest
selection time.

In addition to VCO selection, a VCO divider value of 32,
16, 8, or 4 must be selected to provide the desired mixer
LO drive frequency. The divider is selected by VDIV in
register R00[1:0].

Reading the ROM Table

The MAX3543 includes 13 ROM registers to store fac­tory calibration data (see Table 26). Each ROM table
entry must be read using a two-step process. First,
the address of the ROM bits to be read must be pro­grammed into the ROM ADDR register (R0E[3:0]).

Once the address has been programmed, the data
stored in that address is automatically transferred to the
ROM READBACK register (R10[7:0]). The ROM data at
the specified address can then be read from the ROM
READBACK register and stored in the microprocessor’s
local memory. After all ROM registers have been read
and stored in the microprocessor’s local memory, ROM
ADDR must be programmed to 00 for proper operation.

______________________________________________________________________________________ 17

Multiband Analog and
Digital Television Tuner

Table 26. ROM Table

DESCRIPTION ADDR MSB DATA BYTE LSB

BIAS 0x0 Unused BIAS[3:0]

VHF-Low Tracking Filter.
VLS0, VLS1, VLP0, VLP1

VHF-High Tracking Filter.

MAX3543

VHS0, VHS1, VHP0, VHP1

UHF Tracking Filter.
US0, US1, UP0, UP1

IF Filter 0xA Unused Unused C[5] C[4] C[3] C[2] C[1] C[0]
IRHR 0xB IRHR[7] IRHR[6] IRHR[5] IRHR[4] IRHR[3] IRHR[2] IRHR[1] IRHR[0]
Reserved 0xC Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved

0x1 VLS0[5] VLS0[4] VLS0[3] VLS0[2] VLS0[1] VLS0[0] VLS1[5] VLS1[4]
0x2 VLS1[3] VLS1[2] VLS1[1] VLS1[0] VLP0[5] VLP0[4] VLP0[3] VLP0[2]
0x3 VLP0[1] VLP0[0] VLP1[5] VLP1[4] VLP1[3] VLP1[2] VLP1[1] VLP1[0]
0x4 VHS0[5] VHS0[4] VHS0[3] VHS0[2] VHS0[1] VHS0[0] VHS1[5] VHS1[4]
0x5 VHS1[3] VHS1[2] VHS1[1] VHS1[0] VHP0[5] VHP0[4] VHP0[3] VHP0[2]
0x6 VHP0[1] VHP0[0] VHP1[5] VHP1[4] VHP1[3] VHP1[2] VHP1[1] VHP1[0]
0x7 US0[5] US0[4] US0[3] US0[2] US0[1] US0[0] US1[5] US1[4]
0x8 US1[3] US1[2] US1[1] US1[0] UP0[5] UP0[4] UP0[3] UP0[2]
0x9 UP0[1] UP0[0] UP1[5] UP1[4] UP1[3] UP1[2] UP1[1] UP1[0]

Setting RF Tracking Filter Codes

The MAX3543 includes a programmable tracking filter
for each band of operation to optimize rejection of out­of-band interference while minimizing insertion loss for
the desired received signal. The center frequency of
each tracking filter is selected by a switched-capacitor
array that is programmed by the TFS[7:0] bits in the R06
register and the TFP[5:0] bits in the R07 register.

Optimal tracking filter settings for each channel vary from
part to part due to process variations. To accommodate
part-to-part variations, each part is factory calibrated by
Maxim. During calibration the correction factors for the
series and parallel tracking capacitor arrays are calculat­ed and written into an internal ROM table. The user must
read the ROM table upon power-up and store the data
in local memory (8 bytes total) to calculate the optimal
TFS and TFP settings for each channel. The equation for
setting TFS and TFP at each channel is available in the
device driver code provided by Maxim. Table 26 shows
the address and bits for each ROM table entry.

Layout Recommendations

IMPORTANT: The MAX3543 includes on-chip tracking
filters that utilize external inductors placed on the PCB
at pins 30 through 37. Because the tracking filters oper­ate at frequencies up to 862MHz, they are sensitive to
the inductor and PCB trace parasitics. To achieve the
optimal RF performance (gain, noise figure, and image
rejection), MAX3543 is production tested and trimmed
with the exact same inductors, their relative location

and orientation, and the trace parasitics present on the
MAX3543 Reference Design. To avoid performance deg­radation, PCB designs should exactly copy the RF sec­tion of the Reference Design layout and use the induc­tors specified in the Reference Design bill of materials.
Contact Maxim to obtain the Reference Design layout to
use as a starting point for PCB designs.

In addition to the aforementioned requirements, follow
general good RF layout practices. Keep RF signal lines
as short as possible to minimize losses and radiation.
Use controlled impedance on all high-frequency traces.
The exposed paddle must be soldered evenly to the
board’s ground plane for proper operation. Use abun­dant vias beneath the exposed paddle and maximize
the area of continuous ground plane around the paddle
on the bottom layer for maximum heat dissipation. Use
abundant ground vias between RF traces to minimize
undesired coupling.

To minimize coupling between different sections of the
IC, the ideal power-supply layout is a star configura­tion, which has a large decoupling capacitor at the
central V
node, with each trace going to separate V
MAX3543. Each V
with a low impedance to ground at the frequency of inter­est. Do not share ground vias among multiple connec­tions to the PCB ground plane.

node. The VCC traces branch out from this

CC

pins of the

CC

pin must have a bypass capacitor

CC

18 _____________________________________________________________________________________

Multiband Analog and

Digital Television Tuner

Package Information

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.

PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.

40 TQFN-EP T4066+2

21-0141 90-0053

MAX3543

______________________________________________________________________________________ 19

Multiband Analog and
Digital Television Tuner

Revision History

REVISION

NUMBER

0 10/09 Initial release —

1 4/10

REVISION

DATE

MAX3543

2 7/10 Corrected Figure 3 9

DESCRIPTION

Updated Applications, extended Frequency specification in AC Electrical
Characteristics, and updated Tables 14, 15, and 23 to enable some

features

PAGES

CHANGED

1, 3, 14, 16

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time.

20 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

©

2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.