Ultrahigh Speed a Phase/Frequency Discriminator AD9901 PHASE-LOCKED LOOP FEATURES Phase and Frequency Detection REFERENCE ECL/TTL/CMOS Compatible INPUT Linear Transfer Function LOW- OSCILLATOR No Dead Zone PASS VCO OUTPUT FILTER MIL-STD-883 Compliant Versions Available AD9901 APPLICATIONS 1/N Low Phase Noise Reference Loops OPTIONAL 1/N PRESCALER TYPICAL OF DIGITAL PLLs Fast-Tuning Agile IF Loops Secure Hopping Communications Coherent Radar Transmitter/Receiver Chains GENERAL DESCRIPTION A major feature of the AD9901 is its ability to compare The AD9901 is a digital phase/frequency discriminator capable phase/frequency inputs at standard IF frequencies without of directly comparing phase/frequency inputs up to 200 MHz. prescalers. Excessive phase uncertainty which is common with Processing in a high speed trench-oxide isolated process, com- standard PLL configurations is also eliminated. The AD9901 bined with an innovative design, gives the AD9901 a linear provides the locking speed of traditional phase/frequency dis- detection range, free of indeterminate phase detection zones criminators, with the phase stability of analog mixers. common to other digital designs. The AD9901 is available as a commercial temperature range With a single +5 V supply, the AD9901 can be configured to device, 0 C to +70 C, and as a military temperature device, operate with TTL or CMOS logic levels it can also operate 55 C to +125 C. The commercial versions are packaged in a with ECL inputs when operated with a 5.2 V supply. The 14-lead ceramic DIP and a 20-lead PLCC. open-collector outputs allow the output swing to be matched to The AD9901 Phase/Frequency Discriminator is available in post-filtering input requirements. A simple current setting resis- versions compliant with MIL-STD-883. Refer to the Analog tor controls the output stage current range, permitting a reduc- Devices Military Products Databook or current AD9901/883B tion in power when operated at lower frequencies. data sheet for specifications. FUNCTIONAL BLOCK DIAGRAM DQ DQ REFERENCE REFERENCE FREQUENCY INPUT DISCRIMINATOR FLIP-FLOP FLIP-FLOP REFERENCE OUTPUT Q Q R INPUT OUTPUT XOR DQ OSCILLATOR INPUT S DQ FLIP-FLOP OSCILLATOR OSCILLATOR Q FREQUENCY INPUT DISCRIMINATOR FLIP-FLOP Q REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or Tel: 781/329-4700 World Wide Web Site: AD9901SPECIFICATIONS 1 Operating Temperature Range ABSOLUTE MAXIMUM RATINGS AD9901KQ/KP . 0 C to +70 C Positive Supply Voltage (+V for TTL Operation) . +7 V S Storage Temperature Range 65 C to +150 C Negative Supply Voltage (V for ECL Operation) . 7 V S 2 Junction Temperature Input Voltage Range (TTL Operation) . 0 V to +5.5 V Plastic .+150 C Differential Input Voltage (ECL Operation) 4.0 V Ceramic +175 C I Current . 12 mA SET Lead Soldering Temperature (10 sec) .+300 C Output Current 30 mA (6V = +5.0 V for TTL or 5.2 V for ECL , unless otherwise noted) ELECTRICAL CHARACTERISTICS S Commercial Temperature 08C to +708C AD9901KQ/KP Test Temp Level Min Typ Max Units INPUT CHARACTERISTICS TTL Input Logic 1 Voltage Full VI 2.0 V TTL Input Logic 0 Voltage Full VI 0.8 V 3 TTL Input Logic 1 Current Full VI 0.6 mA 3 Full VI 1.6 mA TTL Input Logic 0 Current ECL Differential Switching Voltage Full VI 300 mV ECL Input Current Full VI 20 m A OUTPUT CHARACTERISTICS 4 Peak-to-Peak Output Voltage Swing Full VI 1.6 1.8 2.0 V TTL Output Compliance Range Full V 37 V ECL Output Compliance Range Full V 2V I Range Full V 0.911 mA OUT Internal Reference Voltage Full VI 0.42 0.47 0.52 V AC CHARACTERISTICS 4 Linear Phase Detection Range 40 kHz +25 C V 360 Degrees 30 MHz +25 C V 320 Degrees 70 MHz +25 C V 270 Degrees Functionality 70 MHz +25 C I Pass/Fail POWER SUPPLY CHARACTERISTICS 5, 6 TTL Supply Current (+5.0 V) +25 C I 43.5 54.0 mA Full I 43.5 54.0 mA 5, 6 +25 C I 42.5 52.5 mA ECL Supply Current (5.2 V) Full I 42.5 52.5 mA Nominal Power Dissipation +25 C V 218 mW NOTES 1 Absolute maximum ratings are limiting values, to be applied individually, and beyond which the service ability of the circuit may be impaired. Functional operability is not necessarily implied. Exposure to absolute maximum rating conditions for an extended period of time may affect device reliability. 2 Maximum junction temperature should not exceed +175 C for ceramic packages, +150 C for plastic packages. Junction temperature can be calculated by: t = PD (q ) +t = PD (q ) +t J JA A JC C where: PD = power dissipation q = thermal impedance from junction to air ( C/W) JA q = thermal impedance from junction to case ( C/W) JC t = ambient temperature ( C) A t = case temperature ( C) C typical thermal impedances: AD9901 Ceramic DIP = q = 74 C/W q = 21 C/W JA JC AD9901 LCC = q = 80 C/W q = 19 C/W JA JC AD9901 PLCC = q = 88.2 C/W q = 45.2 C/W JA JC 3 V = +0.4 V V = +2.4 V. L H 4 R = 47.5 W R = 182 W . SET L 5 lncludes load current of 10 mA (load resistors = 182 W ). 6 Supply should remain stable within 5% for normal operation. Specifications subject to change without notice. 2 REV. B