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MAX2108

Maxim
Part Number MAX2108
Manufacturer Maxim
Description Direct-Conversion Tuner IC
Published May 6, 2005
Detailed Description 19-1449; Rev 0; 4/99 Direct-Conversion Tuner IC General Description The MAX2108 is a low-cost direct-conversion tuner I...
Datasheet PDF File MAX2108 PDF File

MAX2108
MAX2108

Overview
19-1449; Rev 0; 4/99 Direct-Conversion Tuner IC General Description The MAX2108 is a low-cost direct-conversion tuner IC designed for use in digital direct-broadcast satellite (DBS) television set-top box units and microwave links.
Its direct-conversion architecture reduces system cost compared to devices with IF-based architectures.
The MAX2108 directly tunes L-band signals to baseband using a broadband I/Q downconverter.
The operating frequency range spans from 950MHz to 2150MHz.
The IC includes a low-noise amplifier (LNA) with gain control, two downconverter mixers with output buffers, a 90° quadrature generator, and a divide-by 32/33 prescaler.
o Low-Cost Architecture o Operates from Single +5V Supply o On-Chip Quadrature Generator, Dual-Modulus Prescaler (/32, /33) o Input Levels: -20dBm to -70dBm per Carrier o Over 50dB RF Gain-Control Range o 10dB Noise Figure at Maximum Gain o +8dBm IIP3 at Minimum Gain Features MAX2108 Applications DirecTV, PrimeStar, EchoStar DBS Tuners DVB-Compliant DBS Tuners Cellular Base Stations Wireless Local Loop Broadband Systems LMDS Microwave Links PART MAX2108CEG Ordering Information TEMP.
RANGE 0°C to +70°C PIN-PACKAGE 24 QSOP Pin Configuration appears at end of data sheet.
Functional Diagram VCC 12 PS_SEL 11 GC 10 GND 9 GND 8 RFIN 7 RFIN 6 VCC 5 GND 4 VCC 3 IOUT 2 IOUT 1 I /32 /33 0 90 MAX2108 Q 13 PSOUT 14 PSOUT 15 GND 16 GND 17 N.
C.
18 LO 19 LO 20 N.
C.
21 VCC 22 GND 23 QOUT 24 QOUT ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.
maxim-ic.
com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Direct-Conversion Tuner IC MAX2108 ABSOLUTE MAXIMUM RATINGS VCC to GND .
.
-0.
3V to +7V VCC to Any Other VCC .
.
.
-0.
3V to +0.
3V All Other Pins to GND.
.
.
-0.
3V to ...


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