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MAX2116UTL+

更新时间： 2024-02-11 12:19:00
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美信 - MAXIM /
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19-2433; Rev 2; 3/05  
Complete DBS Direct-Conversion Tuner ICs  
with Monolithic VCOs  
General Description  
Features  
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.  
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  
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.  
o Multiple I2C Addresses for Multituner  
Applications  
o Single-Ended (MAX2116) and Differential  
(MAX2118) I/Q Interface  
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.  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
40 Thin QFN-EP*  
(6mm x 6mm)  
MAX2116UTL  
0°C to +85°C  
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.  
40 Thin QFN-EP*  
(6mm x 6mm)  
MAX2118UTL  
0°C to +85°C  
*EP = Exposed pad.  
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  
40-pin thin QFN package.  
IDC-  
IDC+  
VCCDIG  
SCL  
1
2
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
DC OFFSET  
LPF BW  
CORRECTION  
CONTROL  
DAC  
INTERFACE LOGIC  
AND CONTROL  
GC2  
VCCRF1  
RFIN-  
RFIN+  
N.C.  
VREG2  
SDA  
3
DIV2/  
DIV4  
4
AS1  
Applications  
5
MAX2118  
DVB  
N.C.  
6
/N  
/R  
DSS (U.S.)  
GC1  
XTALOUT  
CNTOUT  
XTAL-  
XTAL+  
7
PFD  
VSAT  
VOLTAGE  
REGULATOR  
VREG1  
N.C.  
8
CP  
Internet Through Satellite  
9
PAD  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
I2C is a trademark of Philips Corp.  
________________________________________________________________ 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.  
1234567...15

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