ML2724_05

ML2724 2.4GHz Low-IF 1.5Mbps FSK Transceiver Final Datasheet GENERAL DESCRIPTION The ML2724 is a fully integrated 1.5Mbps frequency shift keyed (FSK) transceiver that operates in the unlicensed 2.4GHz 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. Closed loop modulation eliminates frequency drift and permits practically unlimited TX duration. The transmitter generates a 3dBm FSK output signal. The 1.5Mbps data rate permits data spreading, such as Direct Sequence Spread Spectrum (DSSS) modulation, which improves range. The dual conversion Low-IF receiver has all of the sensitivity and selectivity 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 ML2724 to be used in frequency hopped spread spectrum (FHSS) applications. The ML2724 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 “Green” Pb-Free 32TQFP. FEATURES Complete 2.4GHz FSK Transceiver - High data rate (1.5Mbps) - -81dBm sensitivity @ 0.1% BER (typ) - 3dBm Output Power (differential, typ) Closed Loop TX Modulation Low IF Receiver: No external IF filters required. Fully Integrated frequency synthesizer: - No external resonator required. Sigma-Delta Fractional-N two-port modulator Automatic Filter Alignment - No manufacturing adjustments required. No external data slicer components required Control outputs correctly sequence and control PA 3-wire control interface Analog RSSI output APPLICATIONS 2.4GHz FSK Data Transceivers - Digital Cordless Telephones - Wireless PC Peripherals - Wireless Game Controllers - Wireless Streaming Media PIN CONFIGURATION GNDDMD RVQMIF RVDMD DOUT RSSI VBG VDD DIN XCEN RXON PAON EN DATA CLK AOUT VSS 32 31 30 1 2 3 4 5 6 7 8 9 10 11 29 28 27 26 25 24 23 22 21 20 19 18 VCCA RVLO TXOB TXO GNDRXMX2 GNDRXMX GNDRF RXI BLOCK DIAGRAM AOUT RXI 2.4 GHz Receive Input Quadrature Downmixers F to V DOUT Receive Data Out RSSI Test Mux 12 13 14 17 15 16 Filter Alignment RSSI Divide by 2 Quadrature Divider Transmit Mixer TXO/TXOB 2.4 GHz Output Two-port Modulator ORDERING INFORMATION 2 FREF RVPLL QPO GNDPLL VVREG VTUNE RVVCO GND Mode Control TPC PAON RXON XCEN Parallel control lines DIN Transmit Data In Control Registers DATA Serial CLK Control Bus EN FREF Frequency Reference PART # ML2724DH TEMP RANGE o o PACKAGE PACK (QTY) 1.6 GHz VCO Bandgap PLL Divider P.D. -10 C to +60 C 32TQFP 7x7x1mm Antistatic Tray (250) Tape & Reel (2500) VTUNE Ref. Divider ML2724DH-T -10oC to +60 oC 32TQFP 7x7x1mm QPO PLL Loop Filter DS2724-F-03 DECEMBER 2005 ML2724 TABLE OF CONTENTS GENERAL DESCRIPTION ........................................................................................................................................... 1 PIN CONFIGURATION................................................................................................................................................. 1 ORDERING INFORMATION ........................................................................................................................................ 1 FEATURES................................................................................................................................................................... 1 APPLICATIONS............................................................................................................................................................ 1 BLOCK DIAGRAM ........................................................................................................................................................ 1 TABLE OF CONTENTS................................................................................................................................................ 2 SIMPLIFIED APPLICATIONS DIAGRAM..................................................................................................................... 3 ELECTRICAL CHARACTERISTICS............................................................................................................................. 4 PIN DESCRIPTIONS.................................................................................................................................................... 7 FUNCTIONAL DESCRIPTION ................................................................................................................................... 12 MODES OF OPERATION .......................................................................................................................................... 13 DATA INTERFACE ..................................................................................................................................................... 15 CONTROL INTERFACES AND REGISTER DESCRIPTIONS .................................................................................. 17 DATA INTERFACES .................................................................................................................................................. 22 PERFORMANCE GRAPHS........................................................................................................................................ 24 PHYSICAL DIMENSIONS (INCHES/MILLIMETERS) ................................................................................................ 25 WARRANTY ............................................................................................................................................................... 26 DS2724-F-03 FINAL DATASHEET DECEMBER 2005 2 ML2724 SIMPLIFIED APPLICATIONS DIAGRAM DOUT PAON 3 ANTENNA PAON DOUT AOUT 32 7 RSSI FREF CLK, DATA, EN 3 BASEBAND IC XCEN, RXON 2 AOUT RSSI 28 LNA RXI 17 RXI FREF DATA 9 5 CLK 6 EN 4 T/R SWITCH RXON 2 XCEN 1 ML2724 TXOB TXO 22 TXOB 21 TXO VTUNE 15 QPO 11 DIN VBG 26 30 DIN VCCA BATTERY AND PROTECTION CIRCUITS PA VTUNE QPO 220nF 150Ω. 220nF 33nF 14 RVVCO Figure 1: Typical ML2724 Application Diagram DS2724-F-03 FINAL DATASHEET DECEMBER 2005 3 ML2724 ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. maximum ratings are stress ratings only and functional device operation is not implied. Absolute VCCA, VDD ................................................................................................................................................................. 5.5V Junction Temperature .............................................................................................................................................. 150°C Storage Temperature Range...................................................................................................................... -65°C to 150°C Lead Temperature (Soldering, 10s) ......................................................................................................................... 260°C OPERATING CONDITIONS Normal Temperature Range......................................................................................................................... -10°C to 60°C VCCA Range ...................................................................................................................................................2.7V to 4.5V VDD Range .....................................................................................................................................................2.7V to 3.3V Thermal Resistance (θJA)....................................................................................................................................... 70°C/W Unless otherwise specified, VCCA=VDD=3.3V, TA=25°C, fREF=6.144MHz, Data Rate=1.536Mbps, 13kHz Loop Filter as shown in Figure 1. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS POWER CONSUMPTION VCCA VDD VBG ISTBY IRX ITX Analog supply (VCCA) Digital Supply voltage Bandgap Voltage Supply current, STANDBY mode Supply current, RECEIVE mode Supply current, TRANSMIT mode VDD pin (VCCA ≥ VDD always) VBG pin 26, IO=0μA DC supply connected, XCEN low RX chain active, data being received POUT=3dBm 2.7 2.7 1.23 10 55 50 120 76 76 3.3 4.5 3.3 V V V μA mA mA SYNTHESIZER fC δf IP ΦN Carrier frequency range Channel Spacing Charge Pump sink/source current Phase noise at TXO 1.2MHz 3MHz >7MHz Lock time for channel switch Closed loop, loop filter bandwidth 13KHz (See Figure 1) 2.4 2048 +/-5.5 -95 -115 -125 2.485 GHz kHz mA dBc/Hz tFH From EN asserted to RX valid data(RX), or PAON high (TX) 1 Channel 5 Channels Full Range RXON High to Valid RX data RXON Low to PAON high XCEN high to Valid RX data, XCEN low period >120 seconds 110 185 250 70 63 240 125 220 300 120 75 325 μs μs μs μs μs μs tTX2RX tRX2TX tWAKE Lock time for TX/RX Lock time for RX/TX Lock up time from standby DS2724-F-03 FINAL DATASHEET DECEMBER 2005 4 ML2724 SYMBOL fFREF VFREF RECEIVER ZIN NF DRRX S BWRX PIMAX IIP3 IRR Receiver input impedance Receiver noise figure Data Rate Input Sensitivity Bandwidth Maximum RX RF input Receiver Input IP3 LO leakage at RXI Mixer Image Rejection Ratio Adjacent channel rejection Measured at 3.5MHz offset -80dBm wanted signal