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部品型式

AD9901KP

製品説明
仕様・特性

a Ultrahigh Speed Phase/Frequency Discriminator AD9901 PHASE-LOCKED LOOP FEATURES Phase and Frequency Detection ECL/TTL/CMOS Compatible Linear Transfer Function No “Dead Zone” MIL-STD-883 Compliant Versions Available REFERENCE INPUT LOWPASS FILTER VCO OSCILLATOR OUTPUT AD9901 APPLICATIONS Low Phase Noise Reference Loops Fast-Tuning “Agile” IF Loops Secure “Hopping” Communications Coherent Radar Transmitter/Receiver Chains 1/N OPTIONAL 1/N PRESCALER TYPICAL OF DIGITAL PLLs GENERAL DESCRIPTION The AD9901 is a digital phase/frequency discriminator capable of directly comparing phase/frequency inputs up to 200 MHz. Processing in a high speed trench-oxide isolated process, combined with an innovative design, gives the AD9901 a linear detection range, free of indeterminate phase detection zones common to other digital designs. With a single +5 V supply, the AD9901 can be configured to operate with TTL or CMOS logic levels; it can also operate with ECL inputs when operated with a –5.2 V supply. The open-collector outputs allow the output swing to be matched to post-filtering input requirements. A simple current setting resistor controls the output stage current range, permitting a reduction in power when operated at lower frequencies. A major feature of the AD9901 is its ability to compare phase/frequency inputs at standard IF frequencies without prescalers. Excessive phase uncertainty which is common with standard PLL configurations is also eliminated. The AD9901 provides the locking speed of traditional phase/frequency discriminators, with the phase stability of analog mixers. The AD9901 is available as a commercial temperature range device, 0°C to +70°C, and as a military temperature device, –55°C to +125°C. The commercial versions are packaged in a 14-lead ceramic DIP and a 20-lead PLCC. The AD9901 Phase/Frequency Discriminator is available in versions compliant with MIL-STD-883. Refer to the Analog Devices Military Products Databook or current AD9901/883B data sheet for specifications. FUNCTIONAL BLOCK DIAGRAM D Q D Q REFERENCE FREQUENCY DISCRIMINATOR FLIP-FLOP Q R REFERENCE INPUT FLIP-FLOP REFERENCE INPUT Q D Q XOR OSCILLATOR INPUT FLIP-FLOP OSCILLATOR INPUT OUTPUT OUTPUT Q S Q OSCILLATOR FREQUENCY DISCRIMINATOR FLIP-FLOP Q D REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its 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 otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999

ブランド

AD

会社名

Analog Devices

本社国名

U.S.A

事業概要

半導体デバイスを製造するアメリカの多国籍企業。特にADC、DAC、MEMS、DSPなどに強い。現在は 65nm から 3μm のプロセスルールの回路を設計している。

供給状況

 
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