19-4985; Rev 2; 7/10
TION KIT
EVALUA BLE
AVAILA
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
General Description
The MAX3543 hybrid broadband single-conversion tele-
vision 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.
MAX3543
Ordering Information
PART
MAX3543CTL+
TEMP RANGE
0NC to +70NC
PIN-PACKAGE
40 TQFN-EP*
Applications
DVB-T/DVB-T2 +
PAL/SECAM
DVB-C + PAL/SECAM
DTMB/GB20600 + PAL
ATSC + NTSC
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed paddle.
Block Diagram/Typical Application Circuit/Pin Configuration
LDOBYP
REFDIV
GND
30
TFVL2
TFVH1
TFVH2
TFU1
TFU2A
TFU2B
TFU3
31
32
33
34
35
36
37
29
28
27
26
25
24
23
22
XTALB
21
I
2
C
20
19
SCL
V
CCDIG
REFOUT
GND
DTVOUT+
DTVOUT-
IFOUT2
V
CC
GND
IFIN+
ANALOG
DEMODULATOR
DIG_IF
REF_OUT
I
2
C
DIGITAL
DEMODULATOR
OR
A+D
DEMODULATOR
IFVGC
18
17
16
15
V
CC
FRAC-N
PLL
MAX3543
TRACKING
FILTER
PDET
XTALE
/N
TFVL1
TUNE
SDA
V
CC
14
13
12
11
ANA_IF
LEXT 38
V
CC
RFINL
39
40
+
1
RFINH
2
RFGND1
3
RFVGC
4
V
CCIF
5
RFGND2
6
IFOUT1A
7
IFOUT1B
8
IFVGC
9
ADDR
10
IFIN-
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.
Multiband Analog and
Digital Television Tuner
MAX3543
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND..........................................................-0.3V to +3.6V
RFINL, RFINH, IFIN+, IFIN-, DTVOUT+, DTVOUT-,
IFOUT1A, IFOUT1B, IFOUT2 ............... -0.3V to (V
CC
+ 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 (T
A
= +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, V
CC
= 3.1V to 3.5V, T
A
= 0NC to +70NC, registers set according to Table 1. Typical values are at V
CC
=
3.3V, T
A
= +25NC, unless otherwise noted.) (Note 1)
PARAMETER
SUPPLY VOLTAGE AND CURRENT
Supply Voltage
Supply Current
RF and IF VGC Input
Bias Current
RF and IF VGC Control Voltage
RF and IF VGC Control Voltage
SERIAL INTERFACE
Input Logic-Level Low
Input Logic-Level High
Output Logic-Level Low
Output Logic-Level High
Maximum Clock Rate
3mA sink current
V
CC
-
0.5V
400
0.7 x
V
CC
0.4
0.3 x
V
CC
V
V
V
V
kHz
IF VGA enabled
Standby (REF oscillator on) R08[7] = 1
At 0.5V to 3.0V DC
Maximum gain
Minimum gain
3.0
0.5
3.1
225
5
-100 to
+100
3.5
270
V
mA
FA
V
V
CONDITIONS
MIN
TYP
MAX
UNITS
AC ELECTRICAL CHARACTERISTICS
(MAX3543 Evaluation Kit, RF center frequency = 666MHz, IF center frequency = 36.15MHz, registers set according to Table 1,
f
REF
= 16MHz, V
RFVGC
= V
IFVGC
= 3.0V, V
CC
= 3.3V, T
A
= +25NC, unless otherwise noted.)
PARAMETER
RFINL Operating
Frequency Range
RFINH Operating
Frequency Range
Maximum Voltage
Gain to IFOUT1
CONDITIONS
MIN
TYP
MAX
UNITS
OVERALL REQUIREMENTS (RF INPUT TO IF OUTPUT)
Tunable frequency range
Tunable frequency range
DVB-T mode (see Table 1)
47
345
50
345
862
MHz
MHz
dB
2
______________________________________________________________________________________
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
REF
= 16MHz, V
RFVGC
= V
IFVGC
= 3.0V, V
CC
= 3.3V, T
A
= +25NC, unless otherwise noted.)
PARAMETER
RF Gain Control Range
Noise Figure
Image Rejection
IF VARIABLE-GAIN AMPLIFIER
Maximum Voltage Gain
Minimum Voltage Gain
In-Channel Output V1dB
DETECTOR
Wideband Detector
Input-Referred Attack Point
Narrowband Detector
Input-Referred Attack Point
N-Divider Value
Fractional-N Resolution
Phase-Detector Frequency
Phase-Detector Frequency
REFERENCE OSCILLATOR
Frequency
External Overdrive Level
Output Frequency
Output Level
(Note 2)
AC-coupled sine-wave input
/1, /4 modes
Load Impedance > 20kI||3pF
16
0.5
4
4
1.1
32
1.5
f
XTAL
MHz
V
P-P
MHz
V
P-P
f
XTAL
/2
f
XTAL
/1
8
16
Programmable, R0B[6:4] = 100, CW input signal
Programmable, R0B[2:0] = 011, CW input signal
-36
-47
dBm
dBm
Output load impedance > 2kI||3pF, differential load
Output load impedance > 2kI||3pF, differential load,
V
IFVGC
= 0.5V
36.15MHz CW output signal
60
19
> 2.5
dB
dB
V
P-P
Image applied at 77.8MHz
above desired channel’s
center frequency
47MHz to 470MHz
470MHz to 862MHz
CONDITIONS
(gain at V
RFVGC
= 3.0V) - (gain at V
RFVGC
= 0.5V)
MIN
TYP
53
4
> 70
> 65
MAX
UNITS
dB
dB
dB
MAX3543
SIGMA-DELTA FRAC-N SYNTHESIZER
19
20
10.5
21
251
Bits
MHz
MHz
REFERENCE OSCILLATOR OUTPUT BUFFER
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
Multiband Analog and
Digital Television Tuner
MAX3543
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
R00
R01
R02
R03
R04
R05
R06
R07
R08
R09
R0A
R0B
R0C
R0D
R0E
R0F
R10
R11
R12
R13
R14
R15
REGISTER
ADDRESS
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
REGISTER FUNCTION
VCO
NDIV INT
NDIV FRAC2
NDIV FRAC1
NDIV FRAC0 (VAS Trigger)
MODE CTRL
TFS
TFP
SHUTDOWN
REF CONFIG
VAS CONFIG
PWRDET CFG1
PWRDET CFG2
FILT CF ADJ
ROM ADDR
IRHR
ROM READBACK
VAS STATUS
GEN STATUS
BIAS ADJ
TEST1
ROM WRITE DATA
DVB-T MODE, 8MHz
DIFFERENTIAL IF
(hex)
4C
2B
8E
26
66
D8
Calculated from ROM values
Calculated from ROM values
00
0A
16
43
01
Read from ROM
00
Read from ROM
Read only
Read only
Read only
56
40
Maxim use only
PAL MODE,
ATV OUTPUT
(hex)
4C
57
9C
4C
CD
DA
Calculated from ROM values
Calculated from ROM values
08
0A
16
43
03
Read from ROM
00
Read from ROM
Read only
Read only
Read only
16
40
Maxim use only
4
______________________________________________________________________________________
Multiband Analog and
Digital Television Tuner
Typical Operating Characteristics
(MAX3543 Evaluation Kit, V
CC
= 3.3V, T
A
= +25NC, registers set according to Table 1, unless otherwise noted.)
MAX3543
CASCADED DTV VOLTAGE GAIN
vs. FREQUENCY
MAX3543 toc01
CASCADED DTV VOLTAGE GAIN
vs. RFVGC VOLTAGE
90
80
VOLTAGE GAIN (dB)
70
60
50
40
+70°C
f
RF
= 666MHz
0°C
+25°C
MAX3543 toc02
100
95
90
VOLTAGE GAIN (dB)
85
80
75
70
65
60
0
DVB-T MODE
+25°C
+70°C
0°C
100
30
20
DVB-T MODE
0.5
1.0
1.5
2.0
2.5
3.0
100 200 300 400 500 600 700 800 900
FREQUENCY (MHz)
RFVGC VOLTAGE (V)
CASCADED DTV VOLTAGE GAIN
vs. IFVGC VOLTAGE
f
RF
= 666MHz
90
VOLTAGE GAIN (dB)
80
70
60
50
40
30
0.5
1.0
1.5
2.0
DVB-T MODE
2.5
3.0
+70°C
+25°C
0°C
MAX3543 toc03
ATV VOLTAGE GAIN
vs. FREQUENCY
55
50
VOLTAGE GAIN (dB)
45
40
35
30
25
20
0
FREQUENCY (MHz)
ATV MODE
100 200 300 400 500 600 700 800 900
+70°C
0°C
MAX3543 toc04
MAX3543 toc06
100
60
+25°C
IFVGC VOLTAGE (V)
ATV VOLTAGE GAIN
vs. RFVGC VOLTAGE
50
40
VOLTAGE GAIN (dB)
30
20
10
0
-10
-20
0.5
1.0
1.5
2.0
RFVGC VOLTAGE (V)
ATV MODE
2.5
3.0
+70°C
f
RF
= 666MHz
0°C
+25°C
MAX3543 toc05
NOISE FIGURE
vs. FREQUENCY
10
9
8
NOISE FIGURE (dB)
60
INPUT DIPLEXER CROSSOVER
FREQUENCY IS 345MHz
7
6
5
4
3
2
1
0
0
FREQUENCY (MHz)
ATV MODE
100 200 300 400 500 600 700 800 900
+25°C
_______________________________________________________________________________________
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
