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0.3V Crystal Oscillator Circuit with Buffered Output - Circuit Ideas
for Designers Application Notes Advanced Linear Devices, Inc. (app note) |
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0.5V Crystal Oscillator Circuit with Output Buffer - Circuit Ideas
for Designers Application Notes Advanced Linear Devices, Inc. (app note) |
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2 Second Time Base from Crystal Oscillator - The schematic above
illustrates dividing a crystal oscillator signal by the crystal
frequency to obtain an accurate (0.01%) 1 second time base. Two cascaded
12 stage counters (CD4040) form a 24 stage binary counter and the
appropriate bits are gated together to produce the desired division.
Using a crystal of some even multiple of 2 is desirable so that one
stage of the counter automatically toggles every second which eliminates
the need for the NAND gate and reset circuitry, however the circuit
below illustrates using a crystal which is not an even multiple of 2 and
so requires additional...(electronic circuit) |
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2 Tone Audio Oscillator use for SSB Tests - (electronic schematic /
circuit) |
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32.768 kHz Oscillator using a Common Watch Crystal - Below are a
couple circuits you can use to produce a 32.768 KHz square wave from a
common watch crystal. The output can be fed to a 15 stage binary counter
to obtain a 1 second square wave. The circuit on the left using the 4069
inverter is recommended over the transistor circuit and produces a
better waveform. The single transistor circuit....(electronic diagram) |
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40kHz LED Test Signal Generator - This 40KHz crystal controlled
oscillator circuit drives an infrared LED with powerful 40ma pulses.
The circuit can be used to test optical communications circuits,
designed to receive 40KHz modulated light signals. ….(designed by David
A. Johnson) |
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5 Hints for Debugging MicroController-based Designs AN 1458 -
Agilent Application Note) |
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A Discrete, Low Phase Noise, 125 MHz Crystal Oscillator for the AD9850
- AN-419-Analog Device Application Notes (app note) |
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AN-1320: Enhancing CLC031 Jitter Performance with Easy-To-Use VCXOs
- National Semiconductor Application Note (app note) |
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AN181 Using the Crystal 8900A in 8-Bit Mode - (app note) |
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AN-400: A Study of the Crystal Oscillator for CMOS-COPS - National
Semiconductor Application Note (app note) |
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AN-419: A Discrete, Low Phase Noise, 125 MHz Crystal Oscillator for the
AD9850 - AN-419-Analog Device Application Notes (app note) |
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AN-666: DTMF Generation with 3.58 MHz Crystal - National
Semiconductor Application Note (app note) |
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AN826: Crystal Oscillator Basics & Crystal Selection for RFPIC™ &
PICmicro® Devices - Microchip Application Note Published 17-Jan-02
(app note) |
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CMOS Oscillator - ASCII format |
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Crystal 32.768kHz CMOS Oscillator - ASCII format (electronic circuit) |
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Crystal Considerations with Dallas Real-Time Clocks RTCs - Maxim App
Note #58 (app note) |
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Crystal Controlled Oscillator (Ramon Vargas) - The RF engineer
sometimes has to look for an instrument that will check a low frequency
quartz crystal unit reliably and rapidly. This is a difficult piece of
equipment to find and the engineer often has to consult an electronic
circuits handbook for the schematic of a circuit that will perform the
task. Unfortunately, there aren't many such circuits in the technical
literature currently available, and when found, they don't always work
as expected. A circuit that has been found to work at full satisfaction
in the frequency range from 10 kHz to 500 kHz is illustrated in Figure
1. |
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Crystal Controlled Time Base Generator - (electronic Circuit /
Schematic) |
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Crystal Oscillator (Chrontel) - Chrontel Application Note-06, This
application note addresses issues commonly raised during the selection
of the reference crystal, typically
14.318 MHz, for Chrontel's product line |
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Crystal Oscillator (Goran Olsson) - ASCII format, The world is full
of xtal oscillators twiddled by digital designers lacking in the analog
design knowledge necessary. Just look at all the PC real time clocks
that lags or leads by several minutes per day. And they eat backup
batteries too! IC's with pins that say "Xtal here" can't be trusted
either!. |
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Crystal Oscillator (Pericom App Note) - Pericom Semiconductor
Application Note # 083, (app note) |
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Crystal Oscillator Basics & Crystal Selection for RFPIC™ & PICmicro®
Devices - Microchip Application Note Published 17-Jan-02 (app note) |
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Crystal Oscillator overcomes typical Drawbacks - 08/17/98 EDN-Design
Ideas: (design idea) |
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CX Minature Crystals Circuits - Euro QuartzCX-6V-SM |
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CX-1SM Crystal 530kHz to2.1MHz - Statek App Notes) |
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Discrete, Low Phase Noise, 125 MHz Crystal Oscillator for the AD9850
- AN-419-Analog Device Application Notes (app note) |
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HCMOS Crystal Oscillator - Fairchild Semiconductor App Note 340, May
1983 (app note) |
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Input Stage for Crystal A to D Converters - AS043 Jenson Transformer
Application Note (app note 04/03/02) |
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JT-11SSP-6M as Input Transformer for Crystal CS5367 A/D Converter -
AS086 Jenson Transformer Application Note. Transformer balanced passive
input circuit for CS5367 A/D converter (app note 04/03/02) |
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JT-6110K-B at Input Stage for Crystal A to D Converters - AS043
Jenson Transformer Application Note (app note 04/03/02) |
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Kick start a crystal oscillator in SPICE - 02/05/04 EDN-Design
Ideas: In low-noise analog circuits, a high-gain amplifier serves at the
input to increase the SNR. The input signal level determines the
input-stage gain; low-level signals require the highest gain. It is also
standard practice in low-noise analog-signal processing to make. |
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Low
Distortion Crystal Oscillator - (electronic circuit) |
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Low Frequency Crystal Controlled Oscillator - The RF engineer
sometimes has to look for an instrument that will check a low frequency
quartz crystal unit reliably and rapidly. This is a difficult piece of
equipment to find and the engineer often has to consult an electronic
circuits handbook for the schematic of a circuit that will perform the
task. Unfortunately. |
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One Second Time Base from Crystal Oscillator - (electronic circuit) |
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Pierce Crystal Oscillator Design - The Pierce oscillator ... is
essentially a common emitter amplifier with a tuned circuit for a
collector load and a quartz crystal as a feedback element. In order to
determine whether the Barkhausen criteria is satisfied, loop gain must
be determined at the frequency of oscillation. This is accomplished by
drawing the AC equivalent circuit of the Pierce Oscillator.. |
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Pierce-gate Oscillator Crystal load calculator - RF Design Design
Tips, July 2004 |
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Specifying Quartz Crystals - Maxim Application Notes / 726 / Dec-08
(app note) |
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Study of the Crystal Oscillator for CMOS CoPS - National
Semiconductor Application Note 04 Nov1995 (app note) |
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Tiny Crystal Oscillator (Wenzel) - High-stability gate oscillator
uses two, 5-pin SOT packaged devices |
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Two Tone Audio Oscillator use for SSB Tests - (electronic schematic
/ circuit) |
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Ultra Low Power 32kHz Crystal Oscillator - I have used this circuit
many times when I needed a low frequency reference, which did not draw
much power. With the components show, the current from a 3v battery is
less than 1.2 microamps. (designed by David A. Johnson) |
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Ultra Low Voltage Crystal Oscillator Circuit using Active Loads -
Circuit Ideas for Designers Application Notes Advanced Linear Devices,
Inc. (app note) |
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Ultra Low Voltage Micropower Crystal Oscillator Circuit - Circuit
Ideas for Designers Application Notes Advanced Linear Devices, Inc.
(app note) |
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Use of the CMOS Unbuffered Inverter in Oscillator Circuit - Texas
Instrument Application ReportSZZA043 January 2004 |
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Using the 16MHz Crystal Oscillators - Freescale AN2006 (ap note) |
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Very Low Power Gated Crystal Oscillator - The circuit gates the
output of a continuously operating 32KHz crystal oscillator to the input
of a C-MOS buffer when clock pulses are needed. The technique gets
around the problem of a slow starting crystal oscillator by keeping the
oscillator going and switching on a transistor power stage only as
needed. The method keeps the standby power consumption to a very low 1uA
when used with a 3v supply. ….(designed by David A. Johnson) |
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Wide Swing Variable Crystal Oscillator - (electronic schematic /
circuit) |
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XTAL-Controlled FM TX (V6) - My FM Wireless microphone V5 has been
very popular, both as a beginners project and as a kit. It is
interesting that it has also been the biggest cause of lots of e-mail,
the most common question being How can I make it crystal controlled?.
The oscillator can be made crystal controlled; replace the 2p7 with a
5th harmonic crystal. The oscillator will then be very stable, so stable
in fact, that it cannot even be modulated! This means that you could
only use it to send CW (morse code).....(circuit / schematic design) |
