MAX2622/MAX2623/MAX2624 19-1528 Rev 0 8/99 Monolithic Voltage-Controlled Oscillators General Description Features The MAX2622/MAX2623/MAX2624 self-contained volt- Fully Monolithic age-controlled oscillators (VCOs) combine an integrat- Guaranteed Performance ed oscillator and output buffer in a miniature 8-pin MAX package. Wide Choice of Frequencies The inductor and varactor elements of the tank circuits 855MHz to 881MHz (MAX2622) are integrated on-chip, greatly simplifying application of 885MHz to 950MHz (MAX2623) the part. In addition, the center frequency of oscillation 947MHz to 998MHz (MAX2624) and frequency span are factory preset to provide a +2.7V to +3.3V Single-Supply Operation guaranteed frequency range versus control voltage. An external tuning voltage controls the oscillation frequency. Low-Current Shutdown Mode The output signals are buffered by an amplifier stage Smaller than Modules (8-pin MAX package) (easily matched to 50), using only capacitors to pro- vide higher output power and isolate the devices from load impedance variations. The MAX2622/MAX2623/MAX2624 operate from a +2.7V to +3.3V supply voltage and require only 9mA of supply current. In shutdown mode, the supply current is Ordering Information reduced to 0.1A. PART TEMP. RANGE PIN-PACKAGE Applications MAX2622EUA -40C to +85C 8 MAX 866MHz to 868MHz European ISM Band (MAX2622) MAX2623EUA -40C to +85C 8 MAX DECT 1/2 Frequency LO (MAX2623) MAX2624EUA* -40C to +85C 8 MAX 902MHz to 928MHz ISM Band, 10.7MHz IF *Future productcontact factory for availability. (MAX2623) 902MHz to 928MHz ISM Band, 45MHz to 70MHz IF (MAX2624) Pin Configuration appears at end of data sheet Typical Operating Circuit N.C. GND TUNE TUNE C SERIES OSCILLATOR OUT OUT TO MIXER/ CORE SYNTHESIZER C SHUNT GND 100pF V CC MAX2622 MAX2623 V CC MAX2624 V SHDN CC 0.1F SHDN BIAS 100pF Maxim Integrated Products 1 For free samples & the latest literature: Monolithic Voltage-Controlled Oscillators ABSOLUTE MAXIMUM RATINGS V to GND..............................................................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C CC TUNE, SHDN to GND .................................-0.3V to (V + 0.3V) Junction Temperature......................................................+150C CC OUT to GND ...............................................-0.3V to (V + 0.6V) Storage Temperature Range .............................-65C to +150C CC Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10sec) .............................+300C A 8-pin MAX (derate 5.7mW/C above T = +70C)...457mW A 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 (Typical Operating Circuit, V = +2.7V to +3.3V, V = 1.4V, V = 2V, OUT = unconnected, T = -40C to +85C, unless CC TUNE SHDN A otherwise noted. Typical values are at V = +3V, T = +25C.) (Note 1) CC A PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Voltage 2.7 3.3 V Supply Current 9 11.5 mA Shutdown Supply Current V 0.6V 0.1 10 A SHDN SHDN Input Voltage Low V = 3.3V 0.6 V CC V = 2.7V 2.0 V SHDN Input Voltage High CC SHDN Input Current Low V = 0.6V, V = 3.3V -0.5 0.5 A SHDN CC SHDN Input Current High V = 2.0V, V = 3.3V -0.5 0.5 A SHDN CC TUNE Input Current 0.4V V 2.4V 0.2 nA TUNE AC ELECTRICAL CHARACTERISTICS (Typical Operating Circuit, V = +2.7V to +3.3V, V = 0.4V to 2.4V, V = 2V, T = +25C, unless otherwise noted. Typical CC TUNE SHDN A values measured at V = +3V.) (Note 1) CC PARAMETER CONDITIONS MIN TYP MAX UNIT MAX2622, V = 0.4V to 2.4V, T = -40C to +85C 855 881 TUNE A Oscillator Frequency Range MAX2623, V = 0.4V to 2.4V, T = -20C to +75C 885 950 MHz TUNE A MAX2624, V = 0.4V to 2.4V, T = -40C to +85C 947 998 TUNE A f = 100kHz -101 OFF Phase Noise dBc/Hz f = 1MHz -119 OFF Noise Floor -156 dBm/Hz Tuning Gain (Note 2) V = 0.4V to 2.4V 80 110 MHz/V TUNE Output Power V = 0.4V (Note 3) -8 dBm TUNE Return Loss (Notes 3, 4) -12 dB Harmonics -30 dBc Load Pulling VSWR = 2:1, all phases 0.5 MHz p-p Supply Pushing V stepped from 2.8V to 3.3V 200 kHz/V CC Note 1: Specifications are production tested at T = +25C. Limits over temperature are guaranteed by design and characterization. A Note 2: Maximum tuning gain is measured at V = 0.4V with a 0.2V step to 0.6V. This represents the worst-case (highest) tuning gain. TUNE Note 3: Measurements taken on MAX262 EV kit. Note 4: Return loss is optimized across all frequencies via external shunt/series capacitor matching. 2 MAX2622/MAX2623/MAX2624