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SA9024 Fiches technique(PDF) 2 Page - NXP Semiconductors |
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SA9024 Fiches technique(HTML) 2 Page - NXP Semiconductors |
2 / 23 page Philips Semiconductors Objective specification SA9024 900 MHz transmit modulator and 1.3 GHz fractional–N synthesizer 2 1997 Aug 01 DESCRIPTION This specification defines the requirements for a transmitter modulator and fractional–N synthesizer IC to be used in cellular telephones which employ the North American Dual Mode Cellular System (IS–136). FEATURES • Low current from 3.75V supply • Low phase noise • Main loop with internal charge pump and fractional compensation • 3–line serial interface bus • Power down for the synthesizers • Speedup mode for faster switching APPLICATIONS • Cellular phones • Portable battery–powered radio equipment. GENERAL DESCRIPTION The SA9024 BICMOS device integrates: • Main channel synthesizer • Auxiliary synthesizer • Transmit offset synthesizer and oscillator • I/Q modulator • Power control • Reference and clock buffers • Control logic for programming and power down modes PIN CONFIGURATION SR01536 45 46 47 48 1 2 3 4 5 6 7 13 14 15 16 17 18 19 25 26 27 28 29 30 42 43 44 31 32 33 34 35 36 20 21 22 23 24 8 9 10 11 12 39 40 41 37 38 PHP V RX GND GND Ipeak TANK1 XTAL TX DATA CLOCK LOCK STROBE GND I Q CC V CC V CC SA9024 LO1 RXLO2 TXLO1 TXLO2 PHS out EN 2 Q I Figure 1. Pin Configuration QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VCC Supply voltage VCC 3.6 3.75 3.9 V ICC Supply current – TBD – mA ICC_save Total supply current in power–down mode – TBD – mA fVCO Input frequency 800 – 1300 MHz fAUX Input frequency 10 – 500 MHz fXTAL Crystal reference input frequency 10 – 40 MHz fPC Maximum phase comparator frequency Main and Aux loops – – 5 MHz Tamb Operating ambient temperature –40 – +85 °C ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION SA9024 LQFP48 Plastic low profile quad flat package; 48 leads; body 7x7x1.4 mm SOT313-2 |
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