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MAX3570

Description
HI-IF Single-Chip Broadband Tuners
File Size334KB,17 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Compare View All

MAX3570 Overview

HI-IF Single-Chip Broadband Tuners

19-0067; Rev 0; 2/05
KIT
ATION
EVALU
BLE
AVAILA
HI-IF Single-Chip Broadband Tuners
General Description
Features
Fully Integrated HI-IF Filter
Fully Integrated VCOs, No External Components
or Traces
Low 8dB Noise Figure
High Linearity—Greater Than 54dBc, CSO, CTB,
X-MOD
Industry’s Smallest Footprint
Superior Phase Noise for 256-QAM, 8-VSB, and
COFDM
MAX3570/MAX3571/MAX3573
The MAX3570/MAX3571/MAX3573 low-cost, broad-
band, dual-conversion tuner ICs are designed for use
in digital television receivers. Each IC integrates all
necessary RF functions, including an integrated HI-IF
filter, fully integrated VCOs, and an integrated IF VGA.
The operating frequency range extends from 50MHz to
878MHz while providing over 60dB RF/IF gain-control
range. The MAX3570/MAX3571 have an IF frequency
centered at 44MHz, while the MAX3573 has an IF out-
put centered at 36MHz.
These devices include a variable-gain front-end, achiev-
ing an overall 8dB noise figure. A dual synthesizer gen-
erates both local oscillator (LO) frequencies, providing
superior phase noise performance of -86dBc/Hz at
10kHz. The integrated HI-IF filter achieves 55dBc (typ) of
image rejection. Only an IF SAW filter, passive loop fil-
ters, and a crystal are needed to complete a single-chip
tuner. Device programming and configuration are
accomplished with a 3-wire serial interface for the
MAX3570, and with a 2-wire serial interface for the
MAX3571/MAX3573.
The MAX3570/MAX3571/MAX3573 are available in a
48-pin QFN-EP package and are specified for the com-
mercial (0°C to +70°C) temperature range.
Ordering Information
PART
MAX3570CGM
MAX3571CGM
MAX3573CGM
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
48 QFN-EP*
48 QFN-EP*
48 QFN-EP*
*EP
= Exposed paddle.
Applications
LNABIAS
Pin Configurations/
Functional Diagrams
IFOUT2+
IFOUT2-
RFVGA
IFVGA
BIAS
V
CC
IFIN-
GND
IFIN+
38
DVB-C Digital Terrestrial Receivers
ATSC Digital Terrestrial Receivers
Cable Modems
V
CC
1
48
47
46
45
44
43
42
V
CC
41
40
39
V
CC
37
36 IFOUT1-
35 IFOUT1+
34 GND
33 V
CC
32 GND
31 V
CC
30 TUNE2
29 LOCFLT2
28 GND
27 V
CC
26 CPOUT2
25 V
CC
24
DOCSIS/EURO DOCSIS Cable Modems
ITU J.83 Digital Set-Top Boxes
RFIN+ 2
RFIN- 3
GND 4
V
CC
5
GND 6
V
CC
7
MAX3570
HI-IF
FILTER
Selector Guide
PART
MAX3570
MAX3571
MAX3573
SERIAL INTERFACE
3-Wire
2-Wire
2-Wire
IF CENTER
FREQUENCY
(MHz)
44
44
36
TUNE1 8
LOCFLT1 9
GND 10
I.C. 11
CS 12
13
14
15
16
17
18
19
20
21
22
23
3-WIRE SERIAL
INTERFACE
DUAL SYNTHESIZER
OSCOUT
DIV/LD
OSCIN
SDA
I.C.
CPOUT1
GND
Pin Configurations/Functional Diagrams continued at end
of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
GND
GND
V
CC
SCL
V
CC

MAX3570 Related Products

MAX3570 MAX3571 MAX3570CGM MAX3573 MAX3573CGM MAX3571CGM
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