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PDF MAX3541 Data sheet ( Hoja de datos )
| Número de pieza | MAX3541 | |
| Descripción | Complete Single-Conversion Television Tuner | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-1029; Rev 0; 10/07
Complete Single-Conversion
Television Tuner
www.datasheet4u.com
General Description
The MAX3541 complete single-conversion television
tuner is designed for use in analog/digital terrestrial appli-
cations and digital set-top boxes. This television tuner
draws only 760mW of power from a +3.3V supply voltage.
The MAX3541 is designed to convert PAL or DVB-C sig-
nals in the 47MHz to 68MHz, 174MHz to 230MHz, and
470MHz to 862MHz bands to an intermediate frequency
(IF) of 36MHz.
The MAX3541 includes a variable-gain low-noise amplifi-
er (LNA), multiband tracking filters, a harmonic-rejection
mixer, a low-noise IF amplifier, an IF power detector, and
a variable-gain IF amplifier. The MAX3541 also includes
fully monolithic VCOs and tank circuits, as well as a
complete frequency synthesizer. This highly integrated
design allows for low-power tuner-on-board applications
without the cost and power dissipation issues of dual-
conversion tuner solutions.
The MAX3541 is specified for operation in the -40°C to
+85°C temperature range and is available in a leadless
48-pin flip-chip (fcLGA) package.
Applications
Televisions
Analog/Digital Terrestrial Receivers
Digital Set-Top Boxes
Features
♦ Low Power Consumption: 760mW (typ) from a
+3.3V Supply Voltage
♦ Integrated Tracking Filters
♦ Low Noise Figure: 4.9dB (typ)
♦ Small 7mm x 7mm fcLGA Leadless Package
♦ IF Overload Detector Controls RF Variable-Gain
Amplifier
♦ 2-Wire, I2C-Compatible Serial Control Interface
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
PKG
CODE
MAX3541ELM#G42 -40°C to +85°C 48 fcLGA-EP* L4877F-A
*EP = Exposed paddle.
#Indicates RoHS-compliant and exempt from lead-free
requirements.
Pin Configuration/Functional Diagram
SCL 1
SDA 2
VCC 3
UHF_IN 4
VHF_IN 5
RFGND2 6
LEXT 7
RFGND3 8
RFAGC 9
VCC 10
GND 11
GND 12
48 47 46 45 44 43 42 41 40 39 38 37
÷ R PD CP
SERIAL
INTERFACE
÷N
VCO
DIVIDER
MAX3541
EP
36 IFOUT1-
35 IFOUT1+
34 IFOVLD
VREF
+
-
33 VCC
32 VCC
31 GND
30 IFIN+
29 IFIN-
28 VCC
27 GND
26 IFAGC
25 IFOUT2+
13 14 15 16 17 18 19 20 21 22 23 24
________________________________________________________________ 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.
1 page  
Complete Single-Conversion
Television Tuner
www.datasheet4u.com
Typical Operating Characteristics
(MAX3541EV kit, VCC = +3.3V, VIFAGC = 3.0V, VRFAGC = 3.0V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
208
204 +85°C
200
VHF VOLTAGE GAIN vs. RFAGC VOLTAGE
60
fRF = 64.5MHz -40°C
40
20 +25°C
UHF VOLTAGE GAIN vs. RFAGC VOLTAGE
60
fRF = 801MHz
40 -40°C
20 +25°C
196
192
3.1
+25°C
-40°C
3.2 3.3 3.4
SUPPLY VOLTAGE (V)
3.5
VHF VOLTAGE GAIN vs. FREQUENCY
46
-40°C
44
0 +85°C
-20
0.5
1.0 1.5 2.0 2.5
RFAGC VOLTAGE (V)
3.0
VHF VOLTAGE GAIN vs. FREQUENCY
55
50 -40°C
0
-20
0.5
+85°C
1.0 1.5 2.0 2.5
RFAGC VOLTAGE (V)
3.0
UHF VOLTAGE GAIN vs. FREQUENCY
60
-40°C
50
42 45 40
40
38
45
+25°C
+85°C
50 55 60 65
FREQUENCY (MHz)
70
40
+25°C
+85°C
35
170 180 190 200 210 220 230
FREQUENCY (MHz)
30
20
470
+25°C
+85°C
570 670 770
FREQUENCY (MHz)
870
VHF NOISE FIGURE vs. FREQUENCY
7
+25°C
+55°C
+85°C
5
VHF NOISE FIGURE vs. FREQUENCY
7
+25°C
5
+55°C
+85°C
3 0°C -40°C
1
48 51 54 57 60 63
FREQUENCY (MHz)
3
1
175
0°C
-40°C
185 195 205 215
FREQUENCY (MHz)
225
_______________________________________________________________________________________ 5
5 Page 
Complete Single-Conversion
Television Tuner
www.daTtasahbeelet4u3.c.omN-DIV Low Register (Address: 0001b)
BIT NAME
N[7:0]
RECOMMENDED
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
7-0
10101011
Sets the least significant bits of the PLL integer divider (N). Default
integer divider value is N = 4688. N can range from 256 to 32,767.
Table 4. R-DIV Register (Address: 0010b)
BIT NAME
RESERVED
R[6:0]
BIT LOCATION (0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
7 0 Must be set to 0.
6-0
0010000
Sets the PLL reference divider (R). Default reference divider value is
R = 64. R can range from 16 to 127.
Table 5. VCO Register (Address: 0011b)
BIT NAME
VCO[4:3]
VCO[2:0]
LD
VDIV[1:0]
BIT LOCATION (0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
VCO select. Selects one of three possible VCOs.
00 = VCOs shut down
7-6 10 01 = Selects VCO1
10 = Selects VCO2
11 = Selects VCO3
VCO sub-band select. Selects one of eight possible VCO sub-bands.
000 = Selects SB0
001 = Selects SB1
010 = Selects SB2
5-3 111 011 = Selects SB3
100 = Selects SB4
101 = Selects SB5
110 = Selects SB6
111 = Selects SB7
Lock detect enable.
2 1 0 = Disabled
1 = Enabled
VCO divider ratio select.
00 = Sets VCO divider to 4
1-0 10 01 = Sets VCO divider to 8
10 = Sets VCO divider to 16
11 = Sets VCO divider to 32
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet MAX3541.PDF ] | |
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