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| SP8402 Very Low Phase Noise Divider by 2N DS3738 - 2.1 March 1994 The SP8402 is a very low phase noise divider which divides by powers of two. The S0, S1, S2 data inputs select the division ratio in the range 21 to 28. Special circuits techniques have been used to reduce the phase noise considerably below that produced by standard dividers. The data inputs are CMOS or TTL compatible. The SP8402 is packaged in a 28 pin plastic SO package to be compatible with the SP8400 and SP8401 devices. N/C N/C N/C VCC +5V GND CLOCK INPUT CLOCK INPUT CLOCK INPUT CLOCK INPUT GND VCC +5V VCC +5V N/C S0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 N/C N/C N/C N/C N/C N/C N/C OUTPUT OUTPUT N/C VCC +5V N/C S2 S1 FEATURES s Very low Phase Noise (Typically -155 to 160dBc/Hz at 1kHz offset) s Supply Voltage 5V ABSOLUTE MAXIMUM RATINGS Supply Voltage Output Current Storage Temperature Range Maximum Clock Input Voltage 6.5V 20mA -55C to +125C 2.5V p-p MP28 Fig.1 Pin connections - top view ORDERING INFORMATION SP8402 KG MPES (Commercial Grade) 0 -10 -20 -30 -40 -50 (f) (dBc/Hz) -3dB -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 10 100 1k Frequency (Hz) 10k 100k Fig.2 Typical single sideband phase noise measured at 768MHz SP8400 ELECTRICAL CHARACTERISTICS Guaranteed over: Supply voltage VCC = +4.75V to +5.25V Temperature Tamb = -10C to +75C Tested at +4.75V and +5.25V at Tamb = +25C Characteristic Supply current Output voltage swing Input sensitivity 200MHz to 1.5GHz Pin Min. 4, 11, 12, 18 20, 21 7, 8 82 320 Value Typ. Max. 92 410 102 mA mV mV dBm Output loaded with 300R See Fig.5 p-p @ 1.4GHz input / 256 mode outputs loaded with 330R See Fig.5 RMS Sine wave into 50 Ohms (dBm equivalent) See Fig.3 Units Conditions 140 (-4) Data Inputs Logic high voltage Low low voltage Input current 2.2 0.8 180 V V A 5V Data input voltage 600 500 400 V in mV rms 300 OPERATING WINDOW 200 140mV 100 355mV 0 200 400 600 800 1000 FREQUENCY MHz 1200 1400 1600 Fig.3 Typical input sensitivity S0 L H L H L H L H S1 L L H H L L H H S2 L L L L H H H H DIVISION RATIO 2 4 8 16 32 64 128 256 Fig.4 Truth table 2 SP8400 VCC 1 2 3 4 5 28 27 26 25 24 23 22 1nF 50R RF SIGNAL GENERATOR 6 7 8 9 10 11 12 13 SP8402 21 20 19 18 17 16 15 220nF OUTPUT TTL/CMOS MODULUS CONTROL 14 50R 1nF 10nF 1nF 2x330R 10nF Fig.5 Test circuit 3 SP8400 +5V 10 F 1 2 3 4 5 28 27 26 25 24 23 22 CLOCK INPUT 1nF 50R 6 7 8 9 10 11 12 13 OUTPUT SP8402 21 20 19 18 17 16 15 S0 S1 S2 1nF 10nF 1nF 14 10nF 10nF 2x330R Fig.5 Typical application combining output to increase signal and retain low phase noise 4 http://www.mitelsemi.com World Headquarters - Canada Tel: +1 (613) 592 2122 Fax: +1 (613) 592 6909 North America Tel: +1 (770) 486 0194 Fax: +1 (770) 631 8213 Asia/Pacific Tel: +65 333 6193 Fax: +65 333 6192 Europe, Middle East, and Africa (EMEA) Tel: +44 (0) 1793 518528 Fax: +44 (0) 1793 518581 Information relating to products and services furnished herein by Mitel Corporation or its subsidiaries (collectively "Mitel") is believed to be reliable. However, Mitel assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use. Neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual property rights owned by Mitel or licensed from third parties by Mitel, whatsoever. Purchasers of products are also hereby notified that the use of product in certain ways or in combination with Mitel, or non-Mitel furnished goods or services may infringe patents or other intellectual property rights owned by Mitel. This publication is issued to provide information only and (unless agreed by Mitel in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other information appearing in this publication are subject to change by Mitel without notice. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. Manufacturing does not necessarily include testing of all functions or parameters. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to Mitel's conditions of sale which are available on request. M Mitel (design) and ST-BUS are registered trademarks of MITEL Corporation Mitel Semiconductor is an ISO 9001 Registered Company Copyright 1999 MITEL Corporation All Rights Reserved Printed in CANADA TECHNICAL DOCUMENTATION - NOT FOR RESALE |
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