MAX3580ETJ+ Maxim Integrated Products, MAX3580ETJ+ Datasheet

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MAX3580ETJ+

Manufacturer Part Number
MAX3580ETJ+
Description
IC TUNER TV DIRECT CONV 32TQFN
Manufacturer
Maxim Integrated Products
Type
Direct Conversion TV Tunerr
Datasheet

Specifications of MAX3580ETJ+

Applications
Set-Top Boxes
Mounting Type
Surface Mount
Package / Case
32-TQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3580 fully integrated, direct-conversion TV tuner
is designed for Digital Video Broadcasting-Terrestrial
(DVB-T) applications. The integrated tuner covers a
170MHz to 230MHz input frequency range for the VHF-III
band and 470MHz to 878MHz for the UHF band.
The MAX3580 direct-conversion tuner integrates an RF
input switch and a multiband tracking filter, allowing
low-power tuner-on-board applications without the cost
and power-dissipation issues of dual-conversion tuner
solutions. The zero-IF architecture eliminates the need
for SAW filters by providing baseband I and Q outputs
directly to the demodulator. In addition, DC-offset can-
cellation is implemented on-chip using a mixed-signal
architecture to improve the second-order distortion per-
formance and the dynamic range of the downstream
digitizer and demodulator.
The MAX3580 features dynamic gain control of more
than 76dB and a typical midband noise figure of 4.7dB
referred to the LNA input. The VCO architecture opti-
mizes both in-band and wideband phase noise for
OFDM applications where sensitivity to both 1kHz
phase noise and wideband phase noise related to
strong adjacents can be a problem.
The MAX3580 communicates using a 2-wire serial bus.
The device operates from a typical +3.3V power supply
and dissipates 650mW. The MAX3580 is available in a
small 32-pin thin QFN package (5mm x 5mm) with an
exposed paddle.
19-0611; Rev 9; 2/10
* EP = Exposed paddle.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape-and-reel package.
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.
MAX3580ETJ+
MAX3580ETJ+T
PART
Digital Televisions
Digital Terrestrial Set-Tops
Laptop Televisions
Automotive Televisions
USB Peripherals
________________________________________________________________ Maxim Integrated Products
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
General Description
Applications
PIN-PACKAGE
32 TQFN-EP*
32 TQFN-EP*
Direct-Conversion TV Tuner
o 650mW Power Dissipation (at V
o I and Q Baseband Outputs Eliminate All IF-SAW
o Integrated RF Tracking Filters
o Tunable Baseband Lowpass Filters
o Full-Band VHF-III and UHF Tuning
o +38dB Digital ACPR, +47dB Analog ACPR
o Low Noise Figure: 4.7dB (typ)
o Frac-N Synthesizer for -90dBc/Hz Close-In
o +3.1V to +3.5V Supply Voltage Range
o Ultra-Small, 5mm x 5mm Thin QFN Package
GND_LNA
VCC_RF
TOP VIEW
ADDR2
RFIN2
Filters
Phase Noise
RFIN
LEXT
SDA
SCL
1
2
3
4
5
6
7
8
+
32
9
TRACKING
FILTER
10
31
SERIAL INTERFACE, CONTROL,
30
11
SYNTHESIZER
0
AND
Functional Diagram
29
90
12
Pin Configuration/
LO
MAX3580
28
13
27
14
CC
LO
= +3.3V)
26
15
CHARGE
Features
PUMP
16
25
24
23
22
21
20
19
18
17
CP
LDO
GND_TUNE
VTUNE
VCC_VCO
BB_AGC
BBI+
BBI-
1

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MAX3580ETJ+ Summary of contents

Page 1

... Automotive Televisions USB Peripherals Ordering Information PART TEMP RANGE MAX3580ETJ+ -40°C to +85°C MAX3580ETJ+T -40°C to +85° Exposed paddle. + Denotes a lead(Pb)-free/RoHS-compliant package Tape-and-reel package. ________________________________________________________________ Maxim Integrated Products 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. ...

Page 2

Direct-Conversion TV Tuner ABSOLUTE MAXIMUM RATINGS VCC_ _ to GND......................................................-0.3V to +3.6V SDA, SCL, ADDR2, MUX, REF_BUFF, BB_AGC, RF_AGC to GND ................................-0.3V to +3.6V All Other Pins to GND ..............................-0.3V to (+V RF Input Power ...............................................................+10dBm Operating Temperature Range ...........................-40°C ...

Page 3

AC ELECTRICAL CHARACTERISTICS (MAX3580 EV kit +3.1V to +3.5V BBQ_ loaded by R greater than 2kΩ and C L register conditions, unless otherwise noted. Typical values are at V PARAMETER SYMBOL Operating Frequency Range Overall Voltage ...

Page 4

Direct-Conversion TV Tuner AC ELECTRICAL CHARACTERISTICS (continued) (MAX3580 EV kit +3.1V to +3.5V BBQ_ loaded by R greater than 2kΩ and C L register conditions, unless otherwise noted. Typical values are at V PARAMETER SYMBOL SIGMA-DELTA ...

Page 5

AC ELECTRICAL CHARACTERISTICS (continued) (MAX3580 EV kit +3.1V to +3.5V BBQ_ loaded by R greater than 2kΩ and C L register conditions, unless otherwise noted. Typical values are at V PARAMETER SYMBOL Rejection Ratio DC Output ...

Page 6

Direct-Conversion TV Tuner The following is selected overall performance data for the MAX3580 + digital demodulator. Table 1 shows the typical overall performance as mea- sured using the MAX3580 and one current production DVB-T demodulator. This reference design is available ...

Page 7

Evaluation Kit, typical values are at V VHF-III BAND VOLTAGE GAIN vs. FREQUENCY 110 100 T = 0° +25° +55° +85° 150 160 170 180 190 ...

Page 8

Direct-Conversion TV Tuner (MAX3580 Evaluation Kit, typical values are at V UHF MODE NOISE FIGURE vs. VOLTAGE GAIN +85° +55° +25° -40° ...

Page 9

Evaluation Kit, typical values are at V STOPBAND NOISE vs. FREQUENCY -45 -55 BB_BW <3:0> = "1011" 8MHz CHANNEL MODE -65 BB_BW <3:0> = "1001" 7MHz CHANNEL MODE - FREQUENCY (MHz) RF PORT-TO-PORT ISOLATION ...

Page 10

Direct-Conversion TV Tuner PIN NAME 1 SDA Serial-Data Input Line. Requires a pullup resistor SCL Serial-Clock Input. Requires a pullup resistor RFIN2 Second RF Input 4 RFIN First RF Input Address Line. Sets the ...

Page 11

SDA 1 SCL 2 RFIN2 3 RFIN 4 ADDR2 5 GND_LNA 6 VCC_RF LEXT 3.3V 10kΩ Figure 1. Single-Loop AGC Schematic ______________________________________________________________________________________ Direct-Conversion TV Tuner REF_BUFF ...

Page 12

Direct-Conversion TV Tuner Detailed Description Programmable Registers The MAX3580 includes thirteen write/read registers and three read-only registers. See Table 2 for register con- figuration and the Register Description section. The register configuration of Table 2 shows each bit name and ...

Page 13

Register Descriptions N-Divider Integer (Register Address 0x00) N<7:0>: VCO Integer-N Divider Ratio N-Divider Frac2 (Register Address 0x01) MP: Minimum CP Pulse Width. Always set to 0 (factory use only). LI1, LI0; CP Linearity Control. Always set to 00 (factory use ...

Page 14

Direct-Conversion TV Tuner Shutdown Control (Register Address 0x08) SHDN_BG: Main Bandgap 0 = Enabled 1 = Disabled The main bandgap can and will be shut down once all other blocks are shut down (i.e., all bits in this shutdown register ...

Page 15

DC Offset DAC (Register Address 0x0C) DC_DAC<7:0>: Value to Program to I/Q DC Offset DAC. Note that the MSB is located in the previous register. Tracking Filter ROM Address (Register Address 0x0D) TFA<3:0>: Tracking Filter ROM Address. See Table 3. ...

Page 16

Direct-Conversion TV Tuner To Read Back Fuses IMPORTANT NOTICE: When reading other addresses than 8’h00 (the system trim bits possible that the data going to the bias cells will be disturbed due to the architecture of the fuse ...

Page 17

When addressed with a write command, the MAX3580 allows the master to write to a single register or to multi- ple successive registers. A write cycle begins with the bus master issuing a START condition followed by the seven slave ...

Page 18

Direct-Conversion TV Tuner Applications Information The MAX3580 is designed to be suitable for operation in the 170MHz to 230MHz VHF-III band and in the 470MHz to 878MHz UHF band. A switch selects either RFIN or RFIN2 as the input to ...

Page 19

RF Tracking Filter The MAX3580 utilizes two narrowband RF tracking filters, one for VHF and one for UHF. Each filter is comprised of a fixed inductor and three digitally controlled variable capacitors named series, shunt, and parallel capacitors. The integrated ...

Page 20

... 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 ...

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