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STA001 Datasheet(PDF) 1 Page - STMicroelectronics |
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STA001 Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 20 page 1/20 STA001 November 2002 This is preliminary information on a new product now in development. Details are subject to change without notice. s SINGLE CHIP RECEIVER FOR SATELLITE DIGITAL TRANSMISSION s SUPERHETERODYNE RECEIVER WITH IF OUTPUT s HIGH INPUT INTERCEPT POINT, LOW MIXER NOISE s 54dB IF VGA GAIN RANGE s ADJUSTABLE RF GAIN s ADJUSTABLE IF GAIN s INTEGRATED RF VCO s INTEGRATED IF VCO s INTEGRATED SYNTHESIZER s I2CBUS COMPATIBLE PROGRAMMING INTERFACE s UNREGULATED 2.7 V TO 3.3V VOLTAGE SUPPLY s LOW COST EXTERNAL COMPONENTS DESCRIPTION The STA001 is an RF IC using STMicroelectronics HSB2 High Speed Bipolar Technology for one chip so- lution for the Starman digital satellite radio receiver. The STA001 is assembled in a TQFP44 package. The frontend architecture is a double conversion re- ceiver (see block diagram) . The chip includes all the RF functions up to low IF and manages the signals to and from the baseband. TQFP44 ORDERING NUMBER: STA001 PRODUCT PREVIEW RF FRONT-END FOR DIGITAL RADIO BLOCK DIAGRAM XTAL1, XTAL2 CHANNEL SELECTION M_CLK DIFFERENTIAL SINGLE ENDED FLT2 TK2, NTK2 LNI, NLNI SIP, SIN AGC1, AGC2 OSC 3.68MHz 113.23KHz SCL SDA 14.72MHz PHASE DETECTOR CHARGE PUMP : 1034 2nd PLL :130 VCO 1338.14 - 1375.4 MHz 117.0806 MHz SOP, SON CHARGE PUMP PHASE DETECTOR :363.625- 373.75 1st PLL VCO VDD1 VSS1 RF MIXER IF1 BUFFER VGA IF1 to IF2 MIXER IF2 BUFFER FLT1 CE 1.8366 Mhz TLCK LOCK DETECTOR :4 ENRFOSC BUFFER TK1, NTK1 SUPPLY2 :PLL1 + Crystal osc . SUPPLY3 :DIG. SUPPLY4 :IF1, IF2 &PLL2 SUPPLY1 :RF GADJ1, GADJ2 I2CBUS INTERFACE REF XOSEL MUX PADJ1, PADJ2 LNA RXI, NRXI VDD2 VSS2 VDD4 VSS4 VDD3 VSS3 |
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