MAX2116 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – Complete DBS Direct-Conversion Tuner ICs with Monolithic VCOs

19-2433; Rev 2; 3/05
Complete DBS Direct-Conversion Tuner ICs
with Monolithic VCOs
General Description
The MAX2116/MAX2118 family of low-cost direct-
conversion tuner ICs are designed for use in digital
direct broadcast satellite (DBS) television applications,
professional VSAT systems, and two-way Internet
through satellite applications. These devices set the
standard for integration and performance, significantly
reducing the required RF know-how for design imple-
mentation. Uniquely architected, the MAX2116/MAX2118
simplify direct main board and tuner module designs.
The MAX2116/MAX2118 devices directly convert L-
band signals to baseband using a broadband I/Q
downconverter. The operating frequency range extends
from 925MHz to 2175MHz.
Each IC includes an LNA with gain control, I and Q
downconverting mixers, and baseband lowpass filters
gain and cutoff frequency control. Together, the RF and
baseband variable gain amplifiers provide more than
79dB of gain control range.
The devices include fully monolithic VCOs, as well as a
complete frequency synthesizer. Additionally, an on-
chip crystal oscillator is provided along with a buffered
output for driving additional tuners and demodulators.
Synthesizer programming and device configuration are
accomplished with a 2-wire serial interface. For multi-
tuner applications, each device can be configured to
have one of eight possible 2-wire interface addresses.
Simplifying the interface to low-voltage CMOS demodu-
lators, the MAX2116/MAX2118 incorporate two 2.85V
regulated outputs for pulling up open-drain interface
connections, thus preventing noisy 3V rails from cor-
rupting the sensitive analog signal of the tuners.
The MAX2116/MAX2118 devices are the most versatile
family of DBS products available. With both single-
ended and differential baseband outputs, these
devices are compatible with virtually all QPSK/8-PSK
demodulators. The tuners are available in a very small
40-pin thin QFN package.
Applications
DVB
DSS (U.S.)
VSAT
Internet Through Satellite
I²C is a trademark of Philips Corp.
Features
o Fully Integrated VCOs
o Supports 1Mbaud to 45Mbaud, 925MHz to
2175MHz Operation
o 4MHz to 33MHz Tunable LP Filters
o Complete Synthesizer with I²C™ Interface
o Analog RF VGA and Digital Baseband VGA
o Multiple I²C Addresses for Multituner
Applications
o Single-Ended (MAX2116) and Differential
(MAX2118) I/Q Interface
Ordering Information
PART
MAX2116UTL
TEMP RANGE
0°C to +85°C
MAX2118UTL
0°C to +85°C
*EP = Exposed pad.
PIN-PACKAGE
40 Thin QFN-EP*
(6mm x 6mm)
40 Thin QFN-EP*
(6mm x 6mm)
Pin Configuration/
Functional Diagram
40
39
38
37
36
35
34
33
32
31
IDC- 1
IDC+ 2
VCCRF1 3
RFIN- 4
DC OFFSET
CORRECTION
LPF BW
CONTROL
DAC
GC2
DIV2/
DIV4
30 VCCDIG
29 SCL
INTERFACE LOGIC
AND CONTROL
28 VREG2
27 SDA
RFIN+ 5
N.C. 6
GC1 7
VREG1 8
VOLTAGE
REGULATOR
N.C. 9
MAX2118
/N
/R
PFD
CP
26 AS1
25 N.C.
24 XTALOUT
23 CNTOUT
22 XTAL-
PAD 10
21 XTAL+
11
12
13
14
15
16
17
18
19
20
________________________________________________________________ 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.