MAX2750/MAX2751/MAX2752 19-1825 Rev 1 5/12 2.4GHz Monolithic Voltage-Controlled Oscillators General Description Features The MAX2750/MAX2751/MAX2752 are self-contained volt- Guaranteed Frequency Tuning Range age-controlled oscillators (VCOs) intended for use in the MAX2750: 2400MHz to 2500MHz (Zero IF) 2.4GHz to 2.5GHz ISM band. Each IC combines a fully MAX2751: 2120MHz to 2260MHz integrated oscillator and output buffer in a miniature 8-pin (240MHz to 280MHz IF) MAX package. MAX2752: 2025MHz to 2165MHz (335MHz to 375MHz IF) The inductor and varactor elements of the tank are inte- grated on-chip, greatly simplifying application of the part. On-Chip Tank Circuit The only required external components are a couple of Internally Matched Output Buffer Amplifier supply bypass capacitors. The IC provides direct connec- tion to the VCO tuning voltage input and the VCO buffer Low-Current Shutdown Mode output. The tuning voltage input range is +0.4V to +2.4V, +2.7V to +5.5V Supply Voltage Range and the oscillator frequency tuning range is factory adjust- Miniature 8-Pin MAX Package ed to provide guaranteed limits. The output signal is buffered by an amplifier stage (internally matched to 50) to provide higher output power and isolate the device from load impedance variations. Ordering Information The MAX2750/MAX2751/MAX2752 operate over a +2.7V to +5.5V supply voltage range. Internal regulation of the PART TEMP RANGE PIN-PACKAGE oscillator supply voltage eliminates the need for an exter- MAX2750EUA+ -40C to +85C 8 MAX nal LDO regulator for the VCO. The IC also provides a dig- MAX2751EUA+ -40C to +85C 8 MAX itally controlled shutdown mode to permit implementation of sophisticated power-supply management. In shutdown, MAX2752EUA+ -40C to +85C 8 MAX the supply current is reduced to less than 1A. +Denotes a lead(Pb)-free/RoHS-compliant package. Devices are also available in a tape-and-reel packaging. Specify Applications tape and reel by adding T to the part number when ordering. 802.11b DSSS WLAN Pin Configuration appears at end of data sheet. 802.11 FHSS WLAN Home RF 2.4GHz Bluetooth ISM Proprietary Radio Typical Operating Circuit BYP GND TUNE OSCILLATOR OUT TO MIXER/ OUT TUNE CORE SYNTHESIZER GND V CC1 MAX2750 MAX2751 V CC MAX2752 V SHDN CC2 SHDN BIAS For pricing, delivery, and ordering information, please contact Maxim Direct 1 at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE2.4GHz Monolithic Voltage-Controlled Oscillators ABSOLUTE MAXIMUM RATINGS V to GND..............................................................-0.3V to +6V Junction Temperature......................................................+150C CC TUNE, SHDN, BYP, OUT to GND...............-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C CC Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) .................................+300C A MAX (derate 4.8mW/C above T = +70C)...........387.8mW Soldering Temperature (reflow) .......................................+260C A Operating Temperature Range ...........................-40C to +85C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V, V = +0.4V to +2.4V, V +2V, OUT = connected to 50 load, T = -40C to +85C. Typical values CC TUNE SHDN A are at V = +3.0V, T = +25C, unless otherwise noted.) (Note 1) CC A PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Voltage 2.7 5.5 V o T = +25 C 11.3 14.4 A MAX2750 o o T = -40 C to +85 C 14.1 17.0 A o T = +25 C A 9.7 12.1 Supply Current MAX2751 mA o o T = -40 C to +85 C 12.7 15.9 A o T = +25 C 10 12.1 A MAX2752 o o T = -40 C to +85 C A 12.8 15.2 Shutdown Supply Current 0.2 1 A 0.6 V SHDN Input Voltage Low 2.0 V SHDN Input Voltage High V 0.6V -2 2 A SHDN Input Current Low SHDN -2 2 A V 2.0V SHDN Input Current High SHDN TUNE Input Current 0.4 V 2.4V 0.02 nA TUNE AC ELECTRICAL CHARACTERISTICS (MAX2750/MAX2751/MAX2752 EV kit, V = +2.7V to +5.5V, V = +0.4V to +2.4V, V +2V, OUT = connected to 50 load, CC TUNE SHDN T = +25C. Typical values are at V = +3.0V, unless otherwise noted.) A CC PARAMETER CONDITIONS MIN TYP MAX UNITS MAX2750 2400 2500 MHz V = +0.4V to +2.4V, Oscillator Guaranteed TUNE MAX2751 2120 2260 MHz o o Frequency Limits (Note1) T = -40 C to +85 C A MAX2752 2025 2165 MHz f = 4MHz -125 dBc/Hz OFFSET Phase Noise Noise floor -151 dBm/Hz f = 2400MHz, +3V 140 OSC MAX2750 f = 2500MHz, +3V 90 OSC f = 2120MHz, +3V OSC 175 Tuning Gain (Note 2) MAX2751 MHz/V f = 2260MHz, +3V 110 OSC f = 2025MHz, +3V 170 OSC MAX2752 f = 2165MHz, +3V OSC 105 Output Power -3 dBm Return Loss 12 dB Harmonics -30 dBc 2 MAX2750/MAX2751/MAX2752