19-2433; Rev 4; 7/08
Complete DBS Direct-Conversion Tuner ICs
with Monolithic VCOs
6/MAX218
General Description
Features
♦ Fully Integrated VCOs
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.
♦ Supports 1Mbaud to 45Mbaud, 850MHz to
2175MHz Operation
♦ 4MHz to 33MHz Tunable LP Filters
♦ Complete Synthesizer with I2C Interface
♦ Analog RF VGA and Digital Baseband VGA
♦ Multiple I2C Addresses for Multituner
Applications
♦ Single-Ended (MAX2116) and Differential
The MAX2116/MAX2118 devices directly convert L-
band signals to baseband using a broadband I/Q
downconverter. The operating frequency range extends
from 850MHz to 2175MHz.
(MAX2118) I/Q Interface
Ordering Information
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.
PART
TEMP RANGE
0°C to +85°C
0°C to +85°C
0°C to +85°C
0°C to +85°C
PIN-PACKAGE
40 TQFN-EP*
40 TQFN-EP*
40 TQFN-EP*
40 TQFN-EP*
MAX2116UTL
MAX2116UTL+
MAX2118UTL
MAX2118UTL+
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.
*EP = Exposed paddle.
+Denotes a lead-free/RoHS-compliant package.
Pin Configuration/
Functional Diagram
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.
40
39
38
37
36
35
34
33
32
31
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
(6mm x 6mm) 40-pin thin QFN package.
IDC-
IDC+
VCCDIG
SCL
1
2
30
29
28
27
26
25
24
23
22
21
DC OFFSET
CORRECTION
LPF BW
CONTROL
DAC
INTERFACE LOGIC
AND CONTROL
GC2
VCCRF1
RFIN-
RFIN+
N.C.
VREG2
SDA
3
DIV2/
DIV4
4
Applications
AS1
5
DVB
MAX2118
N.C.
6
DSS (U.S.)
/N
/R
GC1
XTALOUT
CNTOUT
XTAL-
XTAL+
7
PFD
VSAT
VOLTAGE
REGULATOR
VREG1
N.C.
8
Internet Through Satellite
CP
9
PAD
10
11
12
13
14
15
16
17
18
19
20
________________________________________________________________ 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.