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1205 Rare NE566N equivalent LM566CNa preferred sourceFunction Generator
/ PLL / VCOor ⼠Music Synthesizer ⼠FMAX = 1 MHz WIDE 1000:1
(Click here) Continuous Sweep PossibleDatasheet - NE566 (51K
PDF)Electronic Musicians, Amateur Radio HAMsEngineers, Technicians and
ExperimentersIf you appreciate the utility of '555 timer, you'll be
WOWed by the versatility of this scarce, Voltage Controlled Oscillator
(VCO) Function Generator. Only 3 external parts are needed to create a
linear voltage-controlled oscillator with both triangle and square wave
outputs. [Example below shows Pin 5 with a reference voltage supplied by
a resistive divider, but the source can come from anywhere provided it
is within the specification limits.] Operating V+ is 10 to 24 VDC.
Single or dual supplies. Positive or negative ground. Apply a variable
DC voltage to the '566 control pin (5), and you can easily sweep a full
linear 10:1* decade, frequency tuning range with a single timing
Resistor / Capacitor pair. Switch in other R1 / C1 combinations to make
a very simple, multiple decade function generator up to 1 MHz. That's
twice the FMAX of the NE555!
SIGNETICS introduced this part and National Semiconductor copied this
part under the P/N LM566 LM566C,This auction is for a LM566CN the modern
and sourcable version
You won't find this scarce 566 for less anywhere else! Typical
Applications:General uses: communications, test, music.
¡ VCO - Linear / Exponential ¡ FM Modulation ¡ FSK Generator ¡ PLL
(Phase Lock Loop) ¡ Clock Generator ¡ Pulse Width Modulation ¡
Triangle / Square Wave Function Gen ¡ Tunable Noise Generator (music)
*Want to know more about the NE566?Actually, the NE566 can be made to
sweep a continuous 1000:1 frequency span with just one fixed timing
capacitor. Imagine, continuous linear tuning 20 Hz - 20 KHz or 1 KHz - 1
MHz without switching. A simple op-amp circuit provides the precise
voltage control necessary. You set the range with the selection of the
timing capacitor. In our lab tests, we used a 0.047ÂľF timing capacitor
to achieve a sweep from 23 Hz to 49.5 KHz. That's an amazing 2150:1
ratio! Waveform symmetry does degrade at the very low end however, so if
that is critical, a 500:1 or a 100:1 ratio may be more acceptable. Even
at a 500:1 ratio, only two timing capacitors (one hardwired, one
switched) will allow you to sweep the across the range of the NE566 from
4 Hz - 2000 Hz and then 2 KHz to the 1000 KHz, FMAX. Frequency is
inversely proportional to the capacitance. Use the 0.047ÂľF as a
reference. Double it to halve the frequency, halve it to double the
frequency, etc. Voltage, tolerances and circuit layout affect results so
you cannot predict exactly what capacitor values to use for your desired
range. Return to Top
Related application links for the NE566 by Thomas Henry: ADV-Bass
Tunable Noise Generator (131K PDF) Sinewave Shaper
details here
1205 Rare NE566N equivalent LM566CNa preferred sourceFunction Generator
/ PLL / VCOor ⼠Music Synthesizer ⼠FMAX = 1 MHz WIDE 1000:1
(Click here) Continuous Sweep PossibleDatasheet - NE566 (51K
PDF)Electronic Musicians, Amateur Radio HAMsEngineers, Technicians and
ExperimentersIf you appreciate the utility of '555 timer, you'll be
WOWed by the versatility of this scarce, Voltage Controlled Oscillator
(VCO) Function Generator. Only 3 external parts are needed to create a
linear voltage-controlled oscillator with both triangle and square wave
outputs. [Example below shows Pin 5 with a reference voltage supplied by
a resistive divider, but the source can come from anywhere provided it
is within the specification limits.] Operating V+ is 10 to 24 VDC.
Single or dual supplies. Positive or negative ground. Apply a variable
DC voltage to the '566 control pin (5), and you can easily sweep a full
linear 10:1* decade, frequency tuning range with a single timing
Resistor / Capacitor pair. Switch in other R1 / C1 combinations to make
a very simple, multiple decade function generator up to 1 MHz. That's
twice the FMAX of the NE555!
SIGNETICS introduced this part and National Semiconductor copied this
part under the P/N LM566 LM566C,This auction is for a LM566CN the modern
and sourcable version
You won't find this scarce 566 for less anywhere else! Typical
Applications:General uses: communications, test, music.
¡ VCO - Linear / Exponential ¡ FM Modulation ¡ FSK Generator ¡ PLL
(Phase Lock Loop) ¡ Clock Generator ¡ Pulse Width Modulation ¡
Triangle / Square Wave Function Gen ¡ Tunable Noise Generator (music)
*Want to know more about the NE566?Actually, the NE566 can be made to
sweep a continuous 1000:1 frequency span with just one fixed timing
capacitor. Imagine, continuous linear tuning 20 Hz - 20 KHz or 1 KHz - 1
MHz without switching. A simple op-amp circuit provides the precise
voltage control necessary. You set the range with the selection of the
timing capacitor. In our lab tests, we used a 0.047ÂľF timing capacitor
to achieve a sweep from 23 Hz to 49.5 KHz. That's an amazing 2150:1
ratio! Waveform symmetry does degrade at the very low end however, so if
that is critical, a 500:1 or a 100:1 ratio may be more acceptable. Even
at a 500:1 ratio, only two timing capacitors (one hardwired, one
switched) will allow you to sweep the across the range of the NE566 from
4 Hz - 2000 Hz and then 2 KHz to the 1000 KHz, FMAX. Frequency is
inversely proportional to the capacitance. Use the 0.047ÂľF as a
reference. Double it to halve the frequency, halve it to double the
frequency, etc. Voltage, tolerances and circuit layout affect results so
you cannot predict exactly what capacitor values to use for your desired
range. Return to Top
Related application links for the NE566 by Thomas Henry: ADV-Bass
Tunable Noise Generator (131K PDF) Sinewave Shaper
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