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ML2722 Datasheet(PDF) 1 Page - Micro Linear Corporation |
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ML2722 Datasheet(HTML) 1 Page - Micro Linear Corporation |
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1 / 28 page  ML2722 900MHz Low-IF 1.5Mbps FSK Transceiver Final Datasheet DS2722-F-05 DECEMBER 2003 GENERAL DESCRIPTION The ML2722 is a fully integrated 1.5Mbps frequency shift keyed (FSK) transceiver that operates in the unlicensed 900MHz ISM frequency band. The device has been optimized for digital cordless telephone applications and includes all the frequency generation, receive and transmit functions. Automatically adjusted filters eliminate mechanical tuning. The transmitter generates a -1 dBm FSK output signal. The single conversion Low-IF receiver has all the sensitivity and selectively advantages of a traditional super- heterodyne without requiring costly, bulky external filters, while providing the integration advantages of direct conversion. The phase locked loop (PLL) synthesizer is completely integrated, including the voltage controlled oscillator (VCO), tuning circuits, and VCO resonator. This allows the ML2722 to be used in frequency hopped spread spectrum (FHSS) applications. The ML2722 contains internal voltage regulation. It also contains PLL and transmitter configuration registers. The device can be placed in a low power standby mode for current sensitive applications. It is packaged in a 32TQFP. PIN CONFIGURATION VCC5 TRFO RVCC4 RRFI GND GND GND GND 1 2 3 4 5 6 7 8 9 10111213141516 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 XCEN RXON PAON EN DATA CLK TPC/TPQ VSS ORDERING INFORMATION PART NUMBER TEMPERATURE RANGE PACKAGE PUBLICATION ML2722DH -10 oC to +60 oC 32 Pin TQFP 7mm body DS2722-F-05 FEATURES § Single chip ISM band 900MHz Radio Transceiver with -1 dBm transmit output power § 1.5Mbps maximum data rate § Typical receiver sensitivity: -95dBm at 12.5% CER § Fully integrated frequency synthesizer with internal VCO resonator § Automatic filter calibration: Requires no mechanical tuning adjustments during manufacturing § Low IF Receiver: No external IF filters required § Control outputs correctly sequence and control external PA § 3-wire control interface § Analog RSSI output APPLICATIONS § 900MHz FSK Data Transceivers - Digital Cordless Phones - Wireless Streaming Media - Wireless PC Peripherals BLOCK DIAGRAM |
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