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| ADVANCEthis data sheet is preliminary INFORMATION All information in and subject to change. 6/98 Direct-Conversion Tuner IC for Digital DBS Applications General Description The MAX2107 is a low-cost, direct-conversion tuner IC designed for use in digital, direct-broadcast-satellite (DBS) television set-top box units. Its direct-conversion architecture reduces system cost compared to devices with IF-based architectures. The MAX2107 directly tunes L-band signals to baseband using a broadband I/Q downconverter. Operating frequency range spans from at least 950MHz to 1450MHz. The IC includes an LNA with AGC, two downconverter mixers, an oscillator with 90 quadrature generator and prescaler, and baseband amplifiers. ____________________________Features o Low-Cost Bipolar Design, Lowest Cost Architecture o Operates from Single +5V Supply o 950MHz to 1450MHz Input Frequency Range o On-Chip Oscillator o On-Chip Quadrature Generator, Dual-Modulus Prescaler (/64, /65) o Input Levels: -19dBm to -61dBm per Carrier o Over 40dB AGC Control Range o Noise Figure = 13.2dB; IIP3 = 6.5dBm (at 1450MHz) o Automatic Baseband Offset Correction o Easy Interface to MAX1002/MAX1003 Dual ADC and Popular Baseband ICs o Evaluation Kit Available, Tuner Reference Design Assistance Available MAX2107 Applications DirecTV, PrimeStar, EchoStar DBS Tuners DVB-Compliant DBS Tuners Cellular Base Stations Wireless Local Loop Broadband Systems LMDS Ordering Information PART MAX2107CWI TEMP. RANGE 0C to +70C PIN-PACKAGE 28 Wide SO Functional Diagram VCC 14 QOUT 13 GND 12 GND 11 AGC 10 GND 9 RFIN 8 RFIN 7 VCC 6 GND 5 VCC 4 GND 3 IOUT 2 VCC 1 Q I MAX2107 OFFSET CORRECTION 15 QDC 16 QDC 17 IDC 18 IDC 19 GND 20 0 90 164, 165 21 TANK 22 TANK 23 VCC 24 GND 25 PSGND 26 PSOUT 27 MOD 28 VCC VCC Patents pending ________________________________________________________________ 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 408-737-7600 ext. 3468. |
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