MAXIM MAX3543CTL+

19-4985; Rev 2; 7/10
TION KIT
EVALUA BLE
IL
AVA A
Multiband Analog and
Digital Television Tuner
Features
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.
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
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.
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
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.
Ordering Information
Applications
DVB-T/DVB-T2 +
PAL/SECAM
DTMB/GB20600 + PAL
PART
TEMP RANGE
PIN-PACKAGE
MAX3543CTL+
0NC to +70NC
40 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed paddle.
ATSC + NTSC
DVB-C + PAL/SECAM
30
TFVL2
TFVH1
TFVH2
TFU1
TFU2A
TFU2B
TFU3
28
27
26
25
24
23
22
31
/N
18
34
17
35
16
TRACKING
FILTER
36
37
15
14
PDET
LEXT 38
11
6
7
8
9
SCL
I2C
VCCDIG
REFOUT
GND
REF_OUT
DIGITAL
DEMODULATOR
OR
A+D
DEMODULATOR
IFVGC
DTVOUT+
DTVOUTIFOUT2
DIG_IF
ANA_IF
VCC
GND
IFIN+
ANALOG
DEMODULATOR
10
IFIN-
5
ADDR
4
IFVGC
3
IFOUT1B
2
IFOUT1A
1
RFGND2
+
VCCIF
12
40
RFVGC
39
RFGND1
RFINL
13
RFINH
VCC
20
19
MAX3543
33
21
I2C
FRAC-N
PLL
32
XTALB
XTALE
REFDIV
SDA
TUNE
GND
LDOBYP
29
VCC
VCC
TFVL1
Block Diagram/Typical Application Circuit/Pin Configuration
LC BANDPASS
FILTER
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.
MAX3543
General Description
MAX3543
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 (VCC + 0.3V)
SDA, SCLK, IFAGC, RFVGA.................................-0.3V to +3.6V
Short-Circuit Protection: DTVOUT+, DTVOUT-,
IFOUT1A, IFOUT1B, IFOUT2..................................... Indefinite
RF Input Power............................................................... +10dBm
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
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.
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, TA = +25NC, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
3.5
V
SUPPLY VOLTAGE AND CURRENT
Supply Voltage
Supply Current
3.1
IF VGA enabled
225
Standby (REF oscillator on) R08[7] = 1
RF and IF VGC Input
Bias Current
At 0.5V to 3.0V DC
RF and IF VGC Control Voltage
Maximum gain
RF and IF VGC Control Voltage
Minimum gain
270
5
-100 to
+100
mA
FA
3.0
V
0.5
V
0.3 x
VCC
V
SERIAL INTERFACE
Input Logic-Level Low
0.7 x
VCC
Input Logic-Level High
Output Logic-Level Low
V
3mA sink current
0.4
Output Logic-Level High
Maximum Clock Rate
V
VCC 0.5V
V
400
kHz
AC ELECTRICAL CHARACTERISTICS
(MAX3543 Evaluation Kit, RF center frequency = 666MHz, IF center frequency = 36.15MHz, registers set according to Table 1,
fREF = 16MHz, VRFVGC = VIFVGC = 3.0V, VCC = 3.3V, TA = +25NC, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OVERALL REQUIREMENTS (RF INPUT TO IF OUTPUT)
RFINL Operating
Frequency Range
Tunable frequency range
47
345
MHz
RFINH Operating
Frequency Range
Tunable frequency range
345
862
MHz
Maximum Voltage
Gain to IFOUT1
DVB-T mode (see Table 1)
50
2 _______________________________________________________________________________________
dB
Multiband Analog and
Digital Television Tuner
(MAX3543 Evaluation Kit, RF center frequency = 666MHz, IF center frequency = 36.15MHz, registers set according to Table 1,
fREF = 16MHz, VRFVGC = VIFVGC = 3.0V, VCC = 3.3V, TA = +25NC, unless otherwise noted.)
PARAMETER
RF Gain Control Range
CONDITIONS
MIN
(gain at VRFVGC = 3.0V) - (gain at VRFVGC = 0.5V)
Noise Figure
Image applied at 77.8MHz
above desired channel’s
center frequency
Image Rejection
TYP
MAX
UNITS
53
dB
4
dB
47MHz to 470MHz
> 70
470MHz to 862MHz
> 65
dB
IF VARIABLE-GAIN AMPLIFIER
Maximum Voltage Gain
Output load impedance > 2kI||3pF, differential load
60
dB
Minimum Voltage Gain
Output load impedance > 2kI||3pF, differential load,
VIFVGC = 0.5V
19
dB
In-Channel Output V1dB
36.15MHz CW output signal
> 2.5
VP-P
DETECTOR
Wideband Detector
Input-Referred Attack Point
Programmable, R0B[6:4] = 100, CW input signal
-36
dBm
Narrowband Detector
Input-Referred Attack Point
Programmable, R0B[2:0] = 011, CW input signal
-47
dBm
SIGMA-DELTA FRAC-N SYNTHESIZER
N-Divider Value
19
Fractional-N Resolution
251
20
Bits
Phase-Detector Frequency
fXTAL/2
8
10.5
MHz
Phase-Detector Frequency
fXTAL/1
16
21
MHz
REFERENCE OSCILLATOR
Frequency
(Note 2)
16
32
MHz
External Overdrive Level
AC-coupled sine-wave input
0.5
1.5
VP-P
fXTAL
MHz
REFERENCE OSCILLATOR OUTPUT BUFFER
Output Frequency
/1, /4 modes
Output Level
Load Impedance > 20kI||3pF
4
4
1.1
VP-P
Note 1: Guaranteed by production test at +25NC. 0NC and +70NC are guaranteed by design and characterization.
Note 2: Guaranteed by design and characterization.
_______________________________________________________________________________________ 3
MAX3543
AC ELECTRICAL CHARACTERISTICS (continued)
MAX3543
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
REGISTER
NAME
REGISTER
ADDRESS
REGISTER FUNCTION
DVB-T MODE, 8MHz
DIFFERENTIAL IF
(hex)
PAL MODE,
ATV OUTPUT
(hex)
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
Read only
R12
0x12
GEN STATUS
Read only
R13
0x13
BIAS ADJ
56
16
R14
0x14
TEST1
40
40
R15
0x15
ROM WRITE DATA
Maxim use only
Maxim use only
4 _______________________________________________________________________________________
Multiband Analog and
Digital Television Tuner
CASCADED DTV VOLTAGE GAIN
vs. FREQUENCY
VOLTAGE GAIN (dB)
+25°C
80
+70°C
75
0°C
70
+25°C
60
50
+70°C
40
65
30
DVB-T MODE
DVB-T MODE
20
60
0
0.5
100 200 300 400 500 600 700 800 900
1.0
1.5
2.0
2.5
FREQUENCY (MHz)
RFVGC VOLTAGE (V)
CASCADED DTV VOLTAGE GAIN
vs. IFVGC VOLTAGE
ATV VOLTAGE GAIN
vs. FREQUENCY
fRF = 666MHz
90
60
MAX3543 toc03
100
0°C
55
0°C
+25°C
3.0
50
VOLTAGE GAIN (dB)
80
+25°C
70
+70°C
60
50
45
40
+70°C
35
30
40
25
DVB-T MODE
30
0.5
1.0
1.5
2.0
2.5
0
3.0
100 200 300 400 500 600 700 800 900
IFVGC VOLTAGE (V)
FREQUENCY (MHz)
ATV VOLTAGE GAIN
vs. RFVGC VOLTAGE
NOISE FIGURE
vs. FREQUENCY
10
MAX3543 toc05
60
fRF = 666MHz
50
ATV MODE
20
40
30
+25°C
20
10
+70°C
0
8
NOISE FIGURE (dB)
0°C
INPUT DIPLEXER CROSSOVER
FREQUENCY IS 345MHz
9
MAX3543 toc06
VOLTAGE GAIN (dB)
85
70
VOLTAGE GAIN (dB)
MAX3543 toc02
80
90
VOLTAGE GAIN (dB)
fRF = 666MHz
90
MAX3543 toc04
0°C
95
100
MAX3543 toc01
100
CASCADED DTV VOLTAGE GAIN
vs. RFVGC VOLTAGE
7
6
+25°C
5
4
3
2
-10
1
ATV MODE
-20
0.5
1.0
1.5
2.0
RFVGC VOLTAGE (V)
2.5
ATV MODE
0
3.0
0
100 200 300 400 500 600 700 800 900
FREQUENCY (MHz)
_______________________________________________________________________________________ 5
MAX3543
Typical Operating Characteristics
(MAX3543 Evaluation Kit, VCC = 3.3V, TA = +25NC, registers set according to Table 1, unless otherwise noted.)
Typical Operating Characteristics (continued)
(MAX3543 Evaluation Kit, VCC = 3.3V, TA = +25NC, registers set according to Table 1, unless otherwise noted.)
64QAM (3/4CR, 1/4GI, 8K, 8MHz), BER < 2e-4
-72
NORDIG SPECIFICATION
64QAM (3/4CR, 1/4GI, 8K, 8MHz), BER < 2e-4
-25
DESIRED/BLOCKER (dB)
-76
-78
-80
-82
-84
-86
MEASURED MAX3543
-88
NORDIG SPECIFICATION
-30
-35
-40
-45
-50
MEASURED MAX3543
-55
-90
100 200 300 400 500 600 700 800 900
-4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9
FREQUENCY (MHz)
RELATIVE BLOCKER CHANNEL
IMAGE REJECTION
vs. FREQUENCY
DETECTOR ATTACK POINT
vs. DETECTOR THRESHOLD SETTING
90
0°C
80
-25
MAX3543 toc09
100
INPUT-REFERRED ATTACK POINT (dBm)
0
70
+70°C
60
+25°C
50
40
MAX3543 toc10
SENSITIVITY (dBm)
-74
-20
MAX3543 toc07
-70
MAX3543 toc08
DVB-T DIGITAL BLOCKER HANDLING
vs. BLOCKER CHANNEL
DVB-T SENSITIVITY vs. FREQUENCY
IMAGE REJECTION (dB)
fRF = 666MHz, CW TONE, DVB-T MODE
-30
WIDEBAND DETECTOR
-35
-40
-45
-50
NARROWBAND DETECTOR
-55
DVB-T MODE
30
0
-60
100 200 300 400 500 600 700 800 900
0
FREQUENCY (MHz)
1
2
3
4
5
6
DETECTOR THRESHOLD SETTING
/1 MODE (16MHz)
fXTAL = 16MHz
0.6
MAX3543 toc11
REFOUT VOLTAGE vs. TIME
0.9
REFOUT VOLTAGE (V)
MAX3543
Multiband Analog and
Digital Television Tuner
0.3
0
-0.3
-0.6
/4 MODE (4MHz)
-0.9
0
0.1
0.2
0.3
0.4
0.5
TIME (µs)
6 _______________________________________________________________________________________
7
Multiband Analog and
Digital Television Tuner
PIN
NAME
1
RFINH
2
RFGND1
FUNCTION
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.
3
RFVGC
4
VCCIF
5
RFGND2
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.
6
IFOUT1A
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.
7
IFOUT1B
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.
8
IFVGC
IF VGA Gain Control Voltage. Accepts a DC voltage from 0.5V to 3V.
9
ADDR
2-Wire Serial-Interface Address Line. This pin sets the device address for the I2C-compatible serial
interface. There are three selectable addresses based on the state of this pin: logic-low, logic-high, or
unconnected.
10, 11
RF VGA Gain Control Voltage. Accepts a DC voltage from 0.5V to 3V.
IF Power Supply. Requires a 600I series ferrite bead to a bypass capacitor to ground.
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
VCC
Power-Supply Connections. Bypass each supply pin with a separate 1000pF capacitor to ground.
14
IFOUT2
15, 16
Single-Ended IF Output. Connect to the analog demodulator input. Requires a 1000pF DC-blocking
capacitor.
DTVOUT-,
Differential IF VGA Output. Connect to the demodulator input. Requires a 1000pF DC-blocking capacitor.
DTVOUT+
18
REFOUT
Crystal Output to Drive Baseband IC. Output frequency is fXTAL or fXTAL/4.
19
VCCDIG
Digital Supply. Requires a 15I series resistor to a 1FF bypass capacitor.
20
SCL
21
XTALB
Crystal Oscillator Base. Connect to the crystal through a DC-blocking capacitor and connect a capacitor
to XTALE.
22
XTALE
Crystal Oscillator Emitter. Connect a capacitor to ground and a capacitor to XTALB.
23
REFDIV
Reference Frequency Divider Control. Three modes are available depending on the state of this pin:
high = fXTAL/1, low = fXTAL/4, unconnected = state determined by register. Note: Power-up state of
register is not guaranteed; therefore, unconnected mode should only be used if the controller can
reprogram I2C in any of the divider settings.
24
SDA
2-Wire Serial Clock Interface. Connect to the serial bus and ensure the bus includes an approximately
5kI pullup resistor.
2-Wire Serial Data Interface. Connect to serial bus and ensure the bus includes an approximately 5kI
pullup resistor.
25
TUNE
PLL Charge-Pump Output and TUNE Input. Connect to the PLL loop filter.
28
LDOBYP
Bypass for On-Chip VCO LDO. Bypass to ground with a 0.47FF capacitor.
_______________________________________________________________________________________ 7
MAX3543
Pin Description
MAX3543
Multiband Analog and
Digital Television Tuner
Pin Description (continued)
PIN
NAME
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
34
TFU1*
35
TFU2A*
UHF Tracking Filter 2A
36
TFU2B*
UHF Tracking Filter 2B
37
TFU3*
38
LEXT*
RF VGA Supply Voltage. Connect through a 270nH pullup inductor to VCC.
40
RFINL
Low-Frequency RF Input. Matched to 75I over the operating band. Requires a DC-blocking capacitor.
—
FUNCTION
UHF Tracking Filter 1
UHF Tracking Filter 3
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.
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
WRITE
ADDRESS
READ
ADDRESS
0
0
0
0xC0
0xC1
Unconnected
0
1
0xC2
0xC3
1
1
0
0xC4
0xC5
8 _______________________________________________________________________________________
Multiband Analog and
Digital Television Tuner
S
1
1
0
0
0
ADDR2
ADDR1
R/W
ACK
1
2
3
4
5
6
7
8
9
P
SDA
SCL
NOTE: TIMING PARAMETERS CONFORM WITH I2C 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
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
issuing a STOP condition. The write cycle does not terminate until the master issues a STOP condition.
START
WRITE DEVICE
ADDRESS
11000[ADDR2][ADDR1]
R/W
ACK
0
—
WRITE REGISTER
ADDRESS
0x00
ACK
—
Figure 2 illustrates an example in which registers 0, 1,
and 2 are written with 0x0E, 0xD8, and 0xE1, respectively.
Read Cycle
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 specified 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 successive 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.
WRITE DATA TO
REGISTER 0x00
0x0E
ACK
—
WRITE DATA TO
REGISTER 0x01
0xD8
ACK
—
WRITE DATA TO
REGISTER 0x02
0xE1
ACK
STOP
—
Figure 2. Example: Write registers 0, 1, and 2 with 0x0E, 0xD8, and 0xE1, respectively.
START
WRITE DEVICE
WRITE DEVICE
WRITE 1ST REGISTER
ACK
R/W ACK
R/W ACK
ADDRESS
ADDRESS
ADDRESS
START
—
—
110000[ADDR2][ADDR1] 1
110000[ADDR2][ADDR1] 0
—
0x00
READ DATA
ACK
REG 0
—
D7–D0
READ DATA
NACK
REG 1
STOP
—
D7–D0
Figure 3. Example: Read data from registers 0 and 1.
_______________________________________________________________________________________ 9
MAX3543
SLAVE ADDRESS
MAX3543
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
also readable. The read-only registers include two status
registers and a ROM table data register.
Typical bit settings are provided only for user convenience 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 VCC
drops below 1V) to initialize the registers. Then follow
up by rewriting the registers needed for channel/frequency programming (i.e., registers R00–R04). The typical 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 REG
ADDR NAME
0x00
R00
REGISTER
FUNCTION
TYPICAL MSB
SETTING
7
VCO
4C
BIT LOCATION
6
5
4
VCO[1:0]
LSB
3
2
1
VSUB[3:0]
0x01
R01
NDIV INT
2B
0x02
R02
NDIV FRAC2
8E
0x03
R03
NDIV FRAC1
26
F[15:8]
0x04
R04
NDIV FRAC0
(VAS Trigger)
66
F[7:0]
0x05
R05
MODE CTRL
D8
0x06
R06
TFS
30
0x07
R07
TFP
0x08
R08
0x09
0x0A
0
VDIV[1:0]
NINT[7:0]
CPS
CP
RDIV[1:0]
LNA2G
RFIN
RFLPF
12
—
—
SHUTDOWN
00
STBY
SDRF
SDMIX
R09
REF CONFIG
0A
—
—
—
R0A
VAS CONFIG
17
F[19:16]
CHBW
TFB[1:0]
IFSEL[1:0]
TFS[7:0]
LFDIV[1:0]
TFP[5:0]
VASS
SDIF
SDIFVG
VAS
0x0B
R0B
PWRDET CFG1
43
DWPD
R0C
PWRDET CFG2
01
—
—
WPDA[2:0]
0x0D
R0D
FILT CF ADJ
ROM
—
—
0x0E
R0E
ROM ADDR
00
—
—
0x0F
R0F
IRHR
ROM
IRHR[7:0]
0x10
R10
ROM READBACK
RO
ROMR[7:0]
SDSYN
—
XODIV
ADE
LTC[1:0]
DNPD
—
SDVCO
ALC[1:0]
ADL
0x0C
—
SDPD
CPLIN[1:0]
NPDA[2:0]
PULLUP
RFIFD[1:0]
CFSET[5:0]
—
VVCO[1:0]
—
ROMA[3:0]
0x11
R11
VAS STATUS
RO
0x12
R12
GEN STATUS
RO
—
—
VVSB[3:0]
0x13
R13
BIAS ADJ
56
—
MIXGM
0x14
R14
TEST1
40
RESERVED
0x15
R15
ROM WRITE DATA
00
ROMW[7:0]
VCP
TRIM
LNA2B[1:0]
VASA
POR
VASE
VCOADC[2:0]
MIXB[1:0]
FILTB
IFVGAB
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.
10 �������������������������������������������������������������������������������������
Multiband Analog and
Digital Television Tuner
Table 4. R00: VCO Register—VCO and LO Divider Control (Address: 00h)
BIT NAME
VCO[1:0]
VSUB[3:0]
VDIV[1:0]
BIT LOCATION
(0 = LSB)
7:6
5:2
1:0
TYPICAL
SETTING
FUNCTION
01
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
0011
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
00
VCO divider ratio select.
00 = Sets VCO divider to 4 (use when fLO > 550MHz)
01 = Sets VCO divider to 8 (use when 275MHz < fLO < 550MHz)
10 = Sets VCO divider to 16 (use when 137.5MHz < fLO < 275MHz)
11 = Sets VCO divider to 32 (use when fLO < 137.5MHz)
Table 5. R01: NDIV INT Register—Integer Part of N-Divider (Address: 01h)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
NINT[7:0]
7:0
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
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
CPS
7
1
Sets the charge-pump current-selection mode between automatic and manual.
Must set to 1 for proper operation.
CP
6
0
For Maxim use only
Reference divider.
00 = /1
01 = /2
1X = Maxim use only
RDIV[1:0]
5:4
00
F[19:16]
3:0
1110
FUNCTION
N-divider fractional part bits 19:16 (out of 19:0)
______________________________________________________________________________________ 11
MAX3543
Register and Bit Descriptions
MAX3543
Multiband Analog and
Digital Television Tuner
Table 7. R03: NDIV FRAC1 Register—N-Divider Fractional Part [15:8] (Address: 03h)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
F[15:8]
7:0
0010 0110
FUNCTION
N-divider fractional part bits 15:8 (out of 19:0)
Table 8. R04: NDIV FRAC0 Register—N-Divider Fractional Part [7:0] (Address: 04h)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
FUNCTION
F[7:0]
7:0
0110
0110
N-divider fractional part bits 7:0 (out of 19:0). Writing this register also triggers VCO
autoselect (VAS).
Table 9. R05: MODE CTRL Register—Mode Control (Address: 05h)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
LNA2G
7
1
Premixer gain configuration. Set to 1 for nominal gain. Set to 0 for approximately
2.5dB reduced gain.
RFIN
6
1
0 = Selects RFINL input (for fRF < 345MHz)
1 = Selects RFINH input (for fRF > 345MHz)
RFLPF
5
0
0 = Disables RF LPF (for fRF > 110MHz)
1 = Enables RF LPF (for fRF < 110MHz)
CHBW
4
1
0 = Sets IF BW to 7MHz mode
1 = Sets IF BW to 8MHz mode
10
Selects the tracking filter band of operation.
00 = VHFL (for fRF < 196MHz)
01 = VHFH (for 196MHz < fRF < 440MHz
10 = UHF (for fRF > 440MHz)
11 = Unused
00
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
TFB[1:0]
IFSEL[1:0]
3:2
1:0
FUNCTION
Table 10. R06: TFS Register—Tracking Filter Series Capacitor (Address: 06h)
BIT
NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
TFS[7:0]
7:0
N/A
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.
12 �������������������������������������������������������������������������������������
Multiband Analog and
Digital Television Tuner
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
EMPTY
7:6
00
Empty
TFP[5:0]
5:0
N/A
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.
FUNCTION
Table 12. R08: SHUTDOWN Register—Shutdown Control (Address: 08h)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
STBY
7
0
Standby.
1 = All circuits shut down except crystal oscillator and REFOUT
FUNCTION
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
IF VGA shutdown.
0 = IF VGA enabled
1 = IF VGA disabled
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.
Table 13. R09: REF CONFIG Register—Reference Oscillator Configuration (Address: 09h)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
FUNCTION
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
Sets crystal oscillator divider for REFOUT signal when REFDIV pin is unconnected.
0: fREFOUT = fXTAL/4
1: fREFOUT = fXTAL
______________________________________________________________________________________ 13
MAX3543
Table 11. R07: TFP Register—Tracking Filter Parallel Capacitor (Address: 07h)
MAX3543
Multiband Analog and
Digital Television Tuner
Table 14. R0A: VAS CONFIG Register—VCO Autoselect Configuration (Address: 0Ah)
BIT NAME
LFDIV[1:0]
BIT LOCATION
(0 = LSB)
7:6
TYPICAL
SETTING
FUNCTION
00
Sets the low-frequency clock divider.
00 = Use for 16MHz P fREF < 20MHz
01 = Use for 20MHz P fREF < 28MHz
10 = Use for 28MHz P fREF P 32MHz
11 = Unused
VASS
5
0
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
VAS
4
1
Controls the VCO autoselect (VAS) function. Must set to 1 for proper operation.
0
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
ADL
3
ADE
2
0
Enables or disables VCO tuning voltage ADC read when the VCO autoselect (VAS)
mode is disabled.
0 = Disables ADC read
1 = Enables ADC read
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.
Table 15. R0B: PWRDET CFG1 Register—Power-Detector Configuration 1 of 2 (Address: 0Bh)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
DWPD
7
0
WPDA[2:0]
6:4
100
DNPD
3
0
NPDA[2:0]
2:0
011
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
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 �������������������������������������������������������������������������������������
Multiband Analog and
Digital Television Tuner
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
EMPTY
7:3
0000 0
PULLUP
2
0
Must set to 0 for proper operation
01
RF IF AGC diode voltage.
00 = Approximately 0.6V
01 = Approximately 0.95V
10 = Approximately 1.3V
11 = Off
RFIFD[1:0]
1:0
FUNCTION
Empty
Table 17. R0D: FILT CF ADJ Register—IF Filter Center Frequency and BW Adjustment
(Address: 0Dh)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
EMPTY
7:6
00
CFSET[5:0]
5:0
ROM
FUNCTION
Empty
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.
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.
Table 18. R0E: ROM ADDR Register—ROM Address (Address: 0Eh)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
EMPTY
7:4
00
ROMA[3:0]
3:0
0000
FUNCTION
Empty
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
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
IRHR[7:0]
7:0
ROM
FUNCTION
For proper operation, must read value from ROM address B[7:0] and write that
value to this register.
Note: Only production tested and guaranteed functional in factory-trimmed state from ROM table. All other states are untested and
may not function correctly.
Table 20. R10: ROM READBACK Register—ROM Readback (Address: 10h)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
ROMR[7:0]
7:0
N/A
FUNCTION
Data bits read from the ROM table address as specified by R0E[3:0]
______________________________________________________________________________________ 15
MAX3543
Table 16. R0C: PWRDET CFG2 Register—Power-Detector Configuration 2 of 2 (Address: 0Ch)
MAX3543
Multiband Analog and
Digital Television Tuner
Table 21. R11: VAS STATUS Register—VCO Autoselect Status (Address: 11h)
BIT NAME
BIT LOCATION
(0 = LSB)
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
VVSB[3:0]
5:2
N/A
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.
VASA
1
N/A
0 = Indicates the autoselect function is disabled or unsuccessful VCO selection
1 = Indicates successful VCO autoselection
Status indicator for the autoselect function.
VASE
0
N/A
0 = Indicates the autoselect function is active
1 = Indicates the autoselect process is inactive
Note: Not production tested or guaranteed functional.
VVCO[1:0]
7:6
N/A
Table 22. R12: GEN STATUS Register—General Status (Address: 12h)
EMPTY
BIT LOCATION
(0 = LSB)
7:6
TYPICAL
SETTING
N/A
VCP
5
N/A
Maxim use only
TRIM
4
N/A
Maxim use only
POR
3
N/A
Maxim use only
N/A
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
BIT NAME
VCOADC
[2:0]
2:0
FUNCTION
Empty
Note: Not production tested or guaranteed functional.
Table 23. R13: BIAS ADJ Register—Bias Adjustments (Address: 13h)
EMPTY
BIT LOCATION
(0 = LSB)
7
TYPICAL
SETTING
0
MIXGM
6
1
Mixer gain setting. Set to 0 for ATV mode. Set to 1 for DTV mode.
01
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’.
BIT NAME
LNA2B[1:0]
5:4
FUNCTION
Empty
MIXB[1:0]
3:2
01
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’.
FILTB
1
1
Must set to 1 for proper operation
IF VGA bias.
0 = Default
1 = Highest current (approximately nominal + 6mA)
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.
IFVGAB
0
0
16 �������������������������������������������������������������������������������������
Multiband Analog and
Digital Television Tuner
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
RESERVED
7:0
0100
0000
MAX3543
Table 24. R14: TEST1 Register (Address: 14h)
FUNCTION
Must set to 0100 0000 for proper operation
Note: This register is not available to the end user.
Table 25. R15: ROM WRITE DATA Register (Address: 15h)
BIT NAME
BIT LOCATION
(0 = LSB)
TYPICAL
SETTING
ROMW[7:0]
7:0
N/A
FUNCTION
Maxim use only
Note: This register is not available to the end user.
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
MAX3543
Multiband Analog and
Digital Television Tuner
Table 26. ROM Table
DESCRIPTION
ADDR MSB
BIAS
0x0
VHF-Low Tracking Filter.
VLS0, VLS1, VLP0, VLP1
VHF-High Tracking Filter.
VHS0, VHS1, VHP0, VHP1
UHF Tracking Filter.
US0, US1, UP0, UP1
DATA BYTE
Unused
LSB
BIAS[3:0]
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]
UP1[0]
0x9
UP0[1]
UP0[0]
UP1[5]
UP1[4]
UP1[3]
UP1[2]
UP1[1]
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
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 VCC node. The VCC traces branch out from this
node, with each trace going to separate VCC pins of the
MAX3543. Each VCC pin must have a bypass capacitor
with a low impedance to ground at the frequency of interest. Do not share ground vias among multiple connections to the PCB ground plane.
18 �������������������������������������������������������������������������������������
Multiband Analog and
Digital Television Tuner
PACKAGE TYPE
PACKAGE CODE
OUTLINE No.
LAND PATTERN NO.
40 TQFN-EP
T4066+2
21-0141
90-0053
______________________________________________________________________________________ 19
MAX3543
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.
MAX3543
Multiband Analog and
Digital Television Tuner
Revision History
REVISION
NUMBER
REVISION
DATE
0
10/09
Initial release
1
4/10
Updated Applications, extended Frequency specification in AC Electrical
Characteristics, and updated Tables 14, 15, and 23 to enable some
features
2
7/10
Corrected Figure 3
DESCRIPTION
PAGES
CHANGED
—
1, 3, 14, 16
9
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
© 2010
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Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.