Trimmer Potentiometers

Total Page:16

File Type:pdf, Size:1020Kb

Trimmer Potentiometers !Note Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc. R50E13.pdf 04.6.11 This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering. Trimmer Potentiometers Murata Manufacturing Co., Ltd. Cat.No.R50E-13 !Note •Please Please read read rating rating and and ! !CAUTIONCAUTION (for (for storage, storage, operating, operating, rating, rating, soldering, soldering, mounting mounting and and handling) handling) in in this this PDF catalog catalog to prevent to prevent smoking smoking and/or and/or burning, burnin etc.g, etc. R50E13.pdf 04.6.11 •This This catalog catalog has has only only typical typical specifications. specifications Therefore, because there you are is no requested space for to detailed approve specifications. our product specifications Therefore, please or to transact approve the our approval product sheet specifications for product or specificationstransact the approval before ordering. sheet for product specifications before ordering. CONTENTS 1 Part Numbering 2 Selection Guide of Trimmer Potentiometers 4 2 1 SMD Open Type 2mm Size PVZ2 Series 5 PVZ2 Series Notice 7 2 SMD Open Type 3mm Size PVZ3/PVS3/PVA3 Series 9 3 PVZ3/PVS3/PVA3 Series Notice 16 3 SMD Sealed Type 2mm Size PVF2 Series 19 PVF2 Series Notice 21 4 4 SMD Sealed Type 3mm Size PVG3 Series 23 PVG3 Series Notice 26 5 SMD Sealed Type 4mm Size PVM4 Series 28 PVM4 Series Notice 31 5 6 SMD Sealed Type Multi-turns PVG5/PV01 Series 33 PVG5/PV01 Series Notice 39 7 Lead Sealed Type Single-turn PVC6/PV32/PV34 Series 41 6 PVC6/PV32/PV34 Series Notice 52 8 Lead Sealed Type Multi-turns PV12/PV37/PV23/PV22/PV36 Series 54 PV12/PV37/PV23/PV22/PV36 Series Notice 71 9 Angle Sensing Potentiometer SMD Dust-proof Type 12mm Size PVS1 Series 73 7 PVS1 Series Notice 75 SMD Open Type and SMD Sealed Type PVM4A_C01 Series Specifications and Test Methods 77 SMD Sealed Type/Lead Sealed Type Specifications and Test Methods 79 8 Angle Sensing Potentiometer Specifications and Test Methods 82 Packaging 83 Recommended Adjustment Tools/Qualified Standards 88 9 • The RoHS compliance means that we judge from EU Directive 2002/95/EC the products do not contain lead, cadmium, mercury, hexavalent chromium, PBB and PBDE, except exemptions stated in EU Directive 2002/95/EC annex and impurities existing in natural world. • This statement does not insure the complaince of any of the listed parts with any laws or legal imperatives developed by any EU members individually with regards to the RoHS Directive. Recycled Paper !Note •Please Please read read rating rating and and ! !CAUTIONCAUTION (for (for storage, storage, operating, operating, rating, rating, soldering, soldering, mounting mounting and and handling) handling) in in this this PDF catalog catalog to prevent to prevent smoking smoking and/or and/or burning, burnin etc.g, etc. R50E13.pdf 04.6.11 •This This catalog catalog has has only only typical typical specifications. specifications Therefore, because there you are is no requested space for to detailed approve specifications. our product specifications Therefore, please or to transact approve the our approval product sheet specifications for product or specificationstransact the approval before ordering. sheet for product specifications before ordering. o Part Numbering Trimmer Potentiometers (Part Number) PV Z3 A 103 A01 R00 q w e r t y Lead Sealed 19mm P Side, Triangle 23 qProduct ID Rectangular 15-turns Y Side, Triangle Product ID W Top, Inline PV Trimmer Potentiometers Y Top, Triangle Lead Sealed 10mm Square 36 P Side, Triangle wSeries 25-turns X Side, Inline eAdjustment Direction /Lead Type Z Side, Triangle Adjustment Direction/ Code Series Code W Top, Triangle Lead Type Y Top, Inline A Top Lead Sealed 6mm Square Z2 SMD Open 2mm Size 37 P Side, Triangle K Rear 12-turns X Side, Triangle A Top Z Side, Inline Z3 SMD Open 3mm Size K Rear R Rear rTotal Resistance SMD Open 3mm Size S3 A Top Expressed by three figures. The unit is ohm. The first and second Stopper Low-profile figures are significant digits, and the third figure expresses the A3 SMD Open 3mm Size A Top number of zeros which follow the two figures. F2 SMD Sealed type 2mm Size A Top Ex.) Code Total Resistance A Top, J-hook 100 10ohm G3 SMD Sealed 3mm Size G Top, Gull-wing 102 1000ohm K Rear 104 100000ohm (=100kohm) M4 SMD Sealed 4mm Size A Top SMD Sealed 5mm Square A Top G5 tIndividual Specification 11-turns H Side Code Series Individual Specification Code P Side SMD Sealed 6mm Square PVZ2/PVZ3/PVS3/ 01 W Top A01 Standard Type 12-turns PVA3/PV32/PV12 X Side PVG3/PVM4/PVG5/PV01/ A Top, Triangle C01 PVC6/PV34/PV22/PV23/ Standard Type PV36/PV37 D Top, Triangle A04 PVZ2 Ultra-thin Type E Side, Triangle Lead Sealed 6mm Square C01 PVZ3 High-heat Resistance Type (for Top Adjustment) C6 G Side, Triangle Single-turn E01 PVZ3 High-heat Resistance Type (for Rear Adjustment) H Side, Triangle D01 PVM4 High-liability Type M Top, Inline C31 PV36/PV37 Radial Taping Q Side, Inline C04 PVC6 Radial Taping H Top, Triangle Standard Type (Resistance Change P Top, Triangle A11 PVF2 Characteristics : Linear) Lead Sealed 6mm Round R Top, Inline 32 Standard Type (Resistance Change Single-turn N Side, Triangle A41 PVF2 Characteristics : Log curve) T Side, Triangle Standard Type (Resistance Change S Side, Triangle A81 PVF2 Characteristics : Log curve) F Top, Triangle Standard Type (Resistance Change P Top, Triangle A51 PVF2 Lead Sealed 9mm Square Characteristics : Log-log curve) 34 H Side, Triangle Single-turn Standard Type (Resistance Change X Side, Triangle A91 PVF2 Characteristics : Log-log curve) W Side, Inline H Top, Triangle yPackaging Lead Sealed 7mm Round P Top, Triangle 12 Code Packaging 4-turns T Side, Triangle A00 Ammo Pack S Side, Triangle B00 Bulk L Side Lead Sealed M00* Magazine 22 31mm Rectangular S Side, Inline R00 Reel 22-turns Y Side, Triangle * M12 for PV36P Type and M15 for PV36W/Y/X/Z Type. 2 !Note •Please Please read read rating rating and and ! !CAUTIONCAUTION (for (for storage, storage, operating, operating, rating, rating, soldering, soldering, mounting mounting and and handling) handling) in in this this PDF catalog catalog to prevent to prevent smoking smoking and/or and/or burning, burnin etc.g, etc. R50E13.pdf 04.6.11 •This This catalog catalog has has only only typical typical specifications. specifications Therefore, because there you are is no requested space for to detailed approve specifications. our product specifications Therefore, please or to transact approve the our approval product sheet specifications for product or specificationstransact the approval before ordering. sheet for product specifications before ordering. Angle Sensing Potentiometers (Part Number) PV S1 A 103 A01 R00 q w e r t y qProduct ID tIndividual Specification Code Product ID Code Individual Specification Code Trimmer Potentiometers A01 SMD Type Standard PV (Rotary Position Sensor) A03 Lead Type Standard wSeries yPackaging Code Series Code Packaging S1 Dust-proof Type 12mm Size B00 Bulk R00 Reel eTerminal Shape T00 Tray Code Terminal Shape A SMD Type L Lead Type rTotal Resistance Expressed by three figures. The unit is ohm. The first and second figures are significant digits, and the third figure expresses the number of zeros which follow the two figures. Ex.) Code Total Resistance 103 10000 ohm (=10k ohm) ∗ PVS1 Series will be changed to new part number since Oct. 1, 2004. Details is as follows. (Part Number) SV 01 A 103 AE A01 R00 q w e r t y u qProduct ID tRotor Hole Shape/Rotor Hole Size Product ID Code Rotor Hole Shape/Rotor Hole Size SV Rotary Position Sensor AD D Hole/3.5mm Dia. AE D Hole/4.0mm Dia. wSeries CE T Hole/4.0mm Dia. Code Series 01 Carbon Rotary Position Sensor yIndividual Specification Code Code Individual Specification Code eTerminal Shape A01 SMD Type Standard Code Terminal Shape A03 Lead Type Standard A SMD Type L Lead Type uPackaging Code Packaging rTotal Resistance B00 Bulk Expressed by three figures. The unit is ohm. The first and second R00 Reel figures are significant digits, and the third figure expresses the T00 Tray number of zeros which follow the two figures. Ex.) Code Total Resistance 103 10000 ohm (=10k ohm) 3 !NoteNote •Please Please read read rating rating and and ! !CAUTIONCAUTION (for (for storage, storage ,operating, operating ,rating, rating ,soldering, soldering ,mounting mounting and and handling) handling) in in this this PDF cata lcatalogog to pr toev epreventnt smo ksmokinging and/ oand/orr burn burnining, etg,c. etc. R50E13.pdf 04.6.11 •This This catalog catalog has has only only typical typica specifications.l specifications Therefore, because t hyouere are is n requestedo space fo tor d approveetailed s ourpec productification sspecifications. Therefore, p orle atos etransact approv ethe ou approvalr produc tsheet spec iforfica producttions or specificationstransact the a beforepprova ordering.l sheet for product specifications before ordering. Selection Guide of Trimmer Potentiometers Start Mounting Method Surface Mount PCB Insertion Sealed Construction Construction Adjustment Open Sealed Top Side Resistive Element Resistive Element Carbon Cermet Carbon Cermet Cermet Resistive Element 2mm size Single Turn 3mm size Single Turn 2mm size Single Turn 3mm size Single Turn 6mm size Single Turn 6mm size Single Turn for Automatic Adjustment for Automatic Adjustment
Recommended publications
  • AN826 Crystal Oscillator Basics and Crystal Selection for Rfpic™ And
    AN826 Crystal Oscillator Basics and Crystal Selection for rfPICTM and PICmicro® Devices • What temperature stability is needed? Author: Steven Bible Microchip Technology Inc. • What temperature range will be required? • Which enclosure (holder) do you desire? INTRODUCTION • What load capacitance (CL) do you require? • What shunt capacitance (C ) do you require? Oscillators are an important component of radio fre- 0 quency (RF) and digital devices. Today, product design • Is pullability required? engineers often do not find themselves designing oscil- • What motional capacitance (C1) do you require? lators because the oscillator circuitry is provided on the • What Equivalent Series Resistance (ESR) is device. However, the circuitry is not complete. Selec- required? tion of the crystal and external capacitors have been • What drive level is required? left to the product design engineer. If the incorrect crys- To the uninitiated, these are overwhelming questions. tal and external capacitors are selected, it can lead to a What effect do these specifications have on the opera- product that does not operate properly, fails prema- tion of the oscillator? What do they mean? It becomes turely, or will not operate over the intended temperature apparent to the product design engineer that the only range. For product success it is important that the way to answer these questions is to understand how an designer understand how an oscillator operates in oscillator works. order to select the correct crystal. This Application Note will not make you into an oscilla- Selection of a crystal appears deceivingly simple. Take tor designer. It will only explain the operation of an for example the case of a microcontroller.
    [Show full text]
  • MSCSICMDD/REF1 Application Note 1824 Dual Sic MOSFET Driver Reference Design 10/2016
    MSCSICMDD/REF1 Application Note 1824 Dual SiC MOSFET Driver Reference Design 10/2016 Dual SiC MOSFET Driver Reference Design Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any particular purpose, nor does Microsemi assume any liability whatsoever arising out of the application or use of any product or circuit. The products sold hereunder and any other products sold by Microsemi have been subject to limited testing and should not be used in conjunction with mission-critical equipment or applications. Any performance specifications are believed to be reliable but are not verified, and Buyer must conduct and complete all performance and other testing of the products, alone and together with, or installed in, any end-products. Buyer shall not rely on any data and performance specifications or parameters provided by Microsemi. It is the Buyer’s Microsemi Corporate Headquarters responsibility to independently determine suitability of any products and to test and verify the same. The information One Enterprise, Aliso Viejo, provided by Microsemi hereunder is provided “as is, where is” and with all faults, and the entire risk associated with such CA 92656 USA information is entirely with the Buyer. Microsemi does not grant, explicitly or implicitly, to any party any patent rights, Within the USA: +1 (800) 713-4113 licenses, or any other IP rights, whether with regard to such information itself or anything described by such information. Outside the USA: +1 (949) 380-6100 Information provided in this document is proprietary to Microsemi, and Microsemi reserves the right to make any Fax: +1 (949) 215-4996 changes to the information in this document or to any products and services at any time without notice.
    [Show full text]
  • EURO QUARTZ TECHNICAL NOTES Crystal Theory Page 1 of 8
    EURO QUARTZ TECHNICAL NOTES Crystal Theory Page 1 of 8 Introduction The Crystal Equivalent Circuit If you are an engineer mainly working with digital devices these notes In the crystal equivalent circuit above, L1, C1 and R1 are the crystal should reacquaint you with a little analogue theory. The treatment is motional parameters and C0 is the capacitance between the crystal non-mathematical, concentrating on practical aspects of circuit design. electrodes, together with capacitances due to its mounting and lead- out arrangement. The current flowing into a load at B as a result of a Various oscillator designs are illustrated that with a little constant-voltage source of variable frequency applied at A is plotted experimentation may be easily modified to suit your requirements. If below. you prefer a more ‘in-depth’ treatment of the subject, the appendix contains formulae and a list of further reading. At low frequencies, the impedance of the motional arm of the crystal is extremely high and current rises with increasing frequency due solely to Series or Parallel? the decreasing reactance of C0. A frequency fr is reached where L1 is resonant with C1, and at which the current rises dramatically, being It can often be confusing as to whether a particular circuit arrangement limited only by RL and crystal motional resistance R1 in series. At only requires a parallel or series resonant crystal. To help clarify this point, it slightly higher frequencies the motional arm exhibits an increasing net is useful to consider both the crystal equivalent circuit and the method inductive reactance, which resonates with C0 at fa, causing the current by which crystal manufacturers calibrate crystal products.
    [Show full text]
  • Reliability Information Analysis Center (RIAC) Electronic Parts Reliability Data (EPRD) Part Category Descriptors
    Reliability Information Analysis Center (RIAC) Electronic Parts Reliability Data (EPRD) Part Category Descriptors The following pages contain the descriptors of all part categories covered by the 4-Volume RIAC Publication “Electronic Parts Reliability Data”, Catalog No. EPRD-2014.
    [Show full text]
  • Behemoth: Restoration of an RCA Victor Model 15K-1 – Gerry O'hara
    A Mid-1930’s ‘Magic’ Behemoth: Restoration of an RCA Victor Model 15K-1 – Gerry O’Hara Background I recently completed the refurbishment of a Marconi CSR-5 receiver for a friend. Shortly before work on that receiver was completed, he asked if I would be able to restore an RCA Victor 15K-1 receiver as my next project. Quite a different ‘beast’ from the CSR-5, a WWII Canadian communications receiver built for the Canadian Navy, whereas the RCA Victor 15K-1 is a high-end domestic console style set dating from the 1936/37 model year. The cabinet was in poor condition (photo, right), and in need of stripping/re-finishing, but the chassis appeared complete and in reasonable shape from the photos I was sent in advance. To save bringing the large, heavy cabinet over to Victoria from the BC Mainland, and as I don’t have the facility to refinish large cabinets at my house at the moment, it was agreed that I would restore the chassis and the cabinet would be restored by a mutual friend at the SPARC Museum. The RCA ‘K’ series Radios and the ‘Magic Brain’ RCA Victor introduced receivers with a separate RF sub- chassis, marketed as the ‘Magic Brain’, in the mid-1930’s, initially with their models 128, 224, C11-1 and others: “Inside RCA Victor all-wave sets is an uncanny governing unit ... Human in its thinking, we compare it to the human brain. You choose the broadcast - from no matter where in the whole world. Then, watchman-like, it keeps out undesired radio signals.
    [Show full text]
  • Electronic Circuits for the Hobbyist
    Circuits for the Hobbyist For your electronics hobby entertainment; ENJOY! It is assumed that you have AT LEAST the equivalent of a Basic Electronics certificate for the electronics projects listed on this page. Other projects require more advanced electronics. A lot of these circuits assume the latter so I will no longer answer the tons of emails in regards to that. If you wish to learn more about electronics there is enough of that available on the internet. Circuits' Message Board Ask your questions here. Someone may answer them. ScanMate Your (Radio) scanner Alternating On-Off Control buddy! 6-20-2002 Audio Pre-Amplifier #1 Simplest R/C Circuit Automatic 9-Volt Nicad Battery Charger Simplest RF Transmitter Basic IC MonoStable Multivibrator Simple Transistor Audio PreAmplifier Basic RF Oscillator #1 Single IC Audio Preamplifier Basic LM3909 Led Flasher Solar Cell NiCad Charger 7-24- Battery Monitor for 12V Lead-Acid 2002 Battery Tester for 1.5 & 9V Solid State Relay Bench Top Powersupply, 0-30V/0-10A, Part 1 Third Brake Light Pulser Bench Top Powersupply, 0-30V/0-10A, Part 2 Toroids, RF/EMI Cores Bench Top Powersupply, 0-30V/0-10A, Part 3 Touch Activated Alarm System Birdie Doorbell Ringer Two-Tone Trainhorn 'Bug' Detector with Beep Universal Flasher Circuit Car Converter for 12V to 9V Variable Power Supply, 1 - 30V @ 1.5A Car NiCad Charger Wailing Alarm DC Motor Reversing Circuit Water-level Sensing and Control DC Motor Control Circuit Waterpump Safety Guard for Fish-pond Gel Cell Charger, I - Off-line Weller WLC100 Electronic Soldering
    [Show full text]
  • MSK 011 Transistor Mixer
    MSK 011 Transistor Mixer North Coast Synthesis Ltd. Matthew Skala August 31, 2021 Documentation for the MSK 011 Copyright © 2018, 2020, 2021 Matthew Skala This documentation is free: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR- POSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this documentation. If not, see http://www.gnu.org/licenses/. 2 Contents General notes 4 Specifications ................................................ 4 Controls and connections ......................................... 4 Source package ............................................... 5 PCBs and physical design ......................................... 5 Component substitutions ......................................... 5 PNP transistor modification ........................................ 5 Modification for ±15V power ....................................... 6 Use and contact information ........................................ 6 Safety and other warnings 7 Bill of materials 8 Building the module 9 Preliminaries ................................................ 9 Some notes on knobs ............................................ 9 Panel components ............................................. 10 Fixed resistors
    [Show full text]
  • United States Patent (113,573,581 72 Inventors John J
    United States Patent (113,573,581 72 Inventors John J. Dutko 3,268,047 8/1966 Grygera, et al............... 1121219 North Plainfield; 3,374,410 3/1968 Cronquist, et al............ 3181138 Richard Beck, Morris Plains; Henry A. 3,435,314 5/1969 Bradley........................ 318/138 Seesselberg, South Plainfield, N.J. 3,443,181 6/1969 Tozol, et al................... 318/138 (21) Appl. No. 836,103 3,466,517 9/1969. Leenhouts.................... 318/138 22 Filed June 24, 1969 45 Patented Apr. 6, 1971 Primary Examiner-Oris L. Rader (73) Assignee The Singer Company Assistant Examiner-K. L. Crosson New York, N.Y. Attorneys-Marshall J. Breen and Chester A. William, Jr. 54 SYSTEM FOR CONTROLLING NEEDLE POSITONING DRIVE AND THREADTRMMING FUNCTIONS OF AN INDUSTRIAL SEWNG ABSTRACT: Solid-state digital logic circuitry with gates, MACHINEDRIVEN BY A CONTNUOUSLY memory flip-flops, delay and sensor elements provide a logic COUPLEDDCMOTOR system for controlling the drive and braking currents to a DC 10 Claims, 9 Drawing Figs. motor continuously coupled in driving relation to a sewing machine. In response to certain input commands, a series of (52) U.S.Ch....................................................... 318/266, events are signaled by the logic circuitry to occur automati 12/219,3181466 cally in a predetermined time sequence resulting in a desired 51 int. Cl............................... ......................... H02p3/06 output sewing related function. Silicon controlled rectifiers 50 Field of Search............................................ 112/219; (SCR's) are used to supply driving current to the motor from a 318/265,266, 466 polyphase voltage supply. A single SCR is used to supply Ref Cited dynamic braking current for the motor.
    [Show full text]
  • Download Schematic-Symbols-Page-1.Pdf
    SCHEMATIC COMPONENT LINE / PACKAGE SYMBOL / COMPONENT DEFINITION OR APPLICATION TYPE / SUB-TYPE DRAWING REF DES A device used in electrical circuits to maintain a constant relation between current flow and voltage. Resistors are used to step up or lower the voltage at Resistor different points in a circuit and to transform a current signal into a voltage signal or vice versa, among other uses. The electrical behavior of a resistor obeys Ohm's law for a constant resistance; however, some resistors are sensitive to heat, light, or other variables. Variable resistors, or rheostats, have a resistance that may be varied across a Variable certain range, usually by means of a mechanical device that alters the position of one terminal of the resistor along a strip of resistant material. The Resistor length of the intervening material determines the resistance. Mechanical variable resistors are also called potentiometers, and are used in the volume knobs of audio equipment and in many other devices. a device with three terminals, two of which are connected to a resistance wire and the third to a brush moving along the wire, so that a variable Potentiometer potential can be tapped off: used in electronic circuits, esp as a volume control Sometimes shortened to pot Potentiometer. Manually adjustable, variable, electrical resistor. It has a resistance element that is attached to the circuit by three contacts, or terminals. The ends of the resistance element are attached to two input voltage conductors of the Trimmer Pot circuit, and the third contact, attached to the output of the circuit, is usually a movable terminal that slides across the resistance element, effectively dividing it into two resistors.
    [Show full text]
  • A Compact 70
    © 1967 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. 260 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, JUNE 1967 A COMPACT70MW, 250KV MODULATOR USING THYRATRONS C. Latham H. Menown N.S. Nicholls Vickers Ltd. English Electric Royal Radar Radiation and Nuclear Valve Co. Ltd. Establishment Engineering Division SUMMARY Pulse Repetition Rate Up to 1000 p.p.s. max. (at 0.5nsec flat-top) Pulse A compact oil immersed modulator is described Flatness *0.5% over specified suitable for driving a 30MWoutput klystron and flat-top. Pulse-Pulse using two 70KV 2,500 Amp hydrogen thyratrons as Time Jitter *5ns max. switches. The design is a development of an H.T. Stabilisation Better than f0.28 for earlier modulator using a 70KV triggered spark *3% mains variation. gapa This earlier model was limited to a maximum Response time less than repetition rate of about 250 p.p.s. but the 2 supply cycles. thyratron switches permit operation to over 1000 The modulator p.p.s. and a maximum duty cycle of .OOl. (Fig.11 is contained in a steel tank approximately Complete oil immersion in a single tank results 15ft. long by 3ft.3in. wide by 4ft.8in. high and in compactness, economy, reliability and facil- at one end supports and accomm- odates the klystron, the cathode itates the use of a high charging voltage which, bushing of which in turn, is lowered into the tank.
    [Show full text]
  • Crystal Oscillator Troubleshooting Guide
    Freescale Semiconductor AN3208 Application Note Rev. 0, 1/2006 Crystal Oscillator Troubleshooting Guide by: Sergio Garcia de Alba Garcin RTAC Americas 1 Overview Table of Contents 1 Overview . 1 This document is a quick-reference troubleshooting 2 Introduction . 1 guide for solving crystal oscillator problems that might 3 Oscillator Configurations. 2 4 Components in the Colpitts Configuration . 3 be encountered when working with microcontrollers. 5 Components in the Pierce Configuration . 3 A practical explanation of the Pierce and Colpitts 6 Crystal Overdriving . 4 7 Insufficient Loop Gain . 5 oscillators used in Freescale microcontrollers and 8 Long Start-Up Time. 5 recommendations to help solve common problems with 9 Temperature and Voltage Issues . 5 microcontroller crystal oscillators are presented in the 10 Noise Immunity . 6 11 Layout Issues . 6 following sections. Nevertheless, a particular problem 12 Other Problems. 7 might require a different solution from those proposed in 13 Conclusion . 7 this application note. Most of the points discussed will 14 References . 8 help in the design stage to come about with a more reliable oscillator. 2 Introduction Most microcontrollers can use a crystal oscillator as their clock source. Other options include external canned oscillators, resonators, RC oscillators, and internal clocks. The main advantages of a crystal oscillator are frequency accuracy, stability, and low power consumption. However, high reliability is needed to fully benefit from these advantages. © Freescale Semiconductor, Inc., 2006. All rights reserved. Oscillator Configurations To solve common problems with crystal oscillators and to achieve high reliability, it is important to pay attention to the configuration used, the components and their values, and the layout.
    [Show full text]
  • HF/VHF/UHF RF Power N-Channel MOSFET
    SD2942 HF/VHF/UHF RF power N-channel MOSFET Datasheet - production data Features Gold metallization Excellent thermal stability Common source push-pull configuration POUT = 350 W min. with 15 dB gain @ 175 MHz Low RDS(on) Description Figure 1: Pin connection The SD2942 is a gold metallized N-channel MOS field-effect RF power transistor. The SD2942 offers 25% lower RDS(ON) than industry standard and 20% higher power saturation than ST SD2932. These characteristics make the SD2942 ideal for 50 V DC very high power applications up to 250 MHz. Table 1: Device summary Order code Marking Package Packing SD2942W SD2942(1) M244 Tube Notes: (1)For more details please refer to Section 6: "Marking, packing and shipping specifications". November 2016 DocID11736 Rev 5 1/17 This is information on a product in full production. www.st.com Contents SD2942 Contents 1 Electrical data .................................................................................. 3 1.1 Maximum ratings ............................................................................... 3 1.2 Thermal data ..................................................................................... 3 2 Electrical characteristics ................................................................ 4 3 Impedance data ............................................................................... 5 4 Typical performance ....................................................................... 6 5 Test circuit (175 MHz) ...................................................................
    [Show full text]