As3340 chip equivalent. 95 € IC AS3360 VCA chip (Equivalent Cem3360) 6.
As3340 chip equivalent What are your recommendations on… AS3340-HYB New VCO chip. Try newer version - AS3340A. 2nd harmonic level depends on the IC type and it changes slightly from chip to chip. ) For sale4 PCS - AS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive! 7 posts • Page 1 of 1. The AS3340 is also available in a DIL package. . The full temperature compensation makes these VCOs extremely stable and eliminates the need for a temperature compensation resistor. May 2, 2018 · I recently designed a basic VCO around the AS3340, which is a clone of the CEM3340 VCO chip. com/a/3jGwB5d. 3M ohm For sale4 PCS - AS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. 1x 20K ohm resistor. Works with CEM3340 or AS3340 VCO chip (kits come with AS3340) Inputs. I have completely build, taken apart… 42 votes, 21 comments. So I'm going to try my hand at a diy VCO. I am wondering if anyone here knows of a way I can do this? Any suggestions would be greatly appreciated. Improved protection and crosst alk level (better than -80 dB). Now updated to the 3340a. May 22, 2023 · 電子部品,通販,販売,半導体,ic,led,マイコン,電子工作vco(電圧制御発振器) as3340秋月電子通商 電子部品通信販売 The 3340 parts are essentially identical, but if using an AS3340 there’s a pull-down resistor connected to pin 4 in the designs for the older ICs that is nominally around 10K that needs to be ~51K if using the AS variety. EDIT: spell check The AS3340 chip is Alfa's modern equivalent of the famous CEM3340 voltage-controlled It provides Ramp, Pulse/Square, and Triangle CEM3340 eBay公認海外通販サイト セカイモン The legendary VCO Oscillator chip from the Roland SH-101 and MC-202, MemoryMoog, Sequential Prophet and Pro-One, Digisound Modular, PAiA Proteus, Plenty of designs out there for discrete synth VCOs, and the parts for those may well be easier for you to find than a 3340. An on-chip 7. Dial in the tuning of this chip with a simple process that requires no repetitive iterations. Although I have four AS3340 chips, until now have built only two AS3340-based VCO - one Maximus and one Timo Rozendal's VCO. However, the other arianvts (CEM3340 and v3340) should work without modi cations. Unfortunately, staring at the datasheets got me into something of a mental block as I would sketch out circuits, think of how to implement them, and then start second-guessing myself. In shor An on-chip 7. When I transferred everything to veroboard and wooden front panel I started getting these spikes: No waves Square+Ramp waves Triangle wave. Apr 21, 2021 · After a week or so surfing around on the internet and trying to figure out where I could find all the components I finally decided to take the easy route and go for a AS3340 based VCO design. Miscellaneous. Later developments included more highly integrated circuits such as the 3389 signal processor and the 3396 synth-on-a-chip. Resistors, Potentiometers, Trimmers. I might have blown it but shouldn't have thought so and Alpha might have marked the chip save me guessing. Part # AS3340: Download AS3340 Download: File Size 676. Will have: 1x V/Oct input, 1x FM (lets face it, another V/Oct) input AS3340-HYB New VCO chip. S. Locally (in Finland) there was some interest in the design, so I decided to make a second revision and do a small run of boards. In shor Jul 10, 2020 · I would like to see a AS3340 Rev. They are identical. May 25, 2019 · Now I have replaced the AS3340 in the A111-3 uPVCO and triming scale an offset frequency. Firstly it doesn’t require a temperature coefficient resistor. It got worse with the AS3340. The AS3340-HYB is pin compatible with the CEM3340. 0 forks Report repository Releases No releases An on-chip 7. 95 € If you only have a +-12v power supply, I would highly recommend LMNC’s 1v/octave VCO. G, and cloned/compatible devices are available from CoolAudio (v3340) and from the Latvian company Alfa (AS3340). 95 € IC CEM3340 VCO chip 29. It has also been cloned by CoolAudio as the V3340 and by Alfa as the AS3340. The highest frequenz wat i can do is 944Hz. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync, is temperature compensated and stable, and provides excellent 1V/Oct tracking. I am building a Source Mixer similar to the one on the SH-101. Result . The IC provides Ramp, Pulse/Square, and Triangle outputs, has inputs for hard and soft sync, is temperature compensated and stable, and provides excellent 1V/Oct tracking. The AS3340A chip is Alfa's modern equivalent of the famous CEM3340 voltage-controlled oscillator. So I'm starting with the basic circuit from LookMomNoComputer [2] and as a test plugging the CV out of my EricaSynths Baseline DB-01 into the input of my bread boarded circuit. Description; Shipping; 1 Review; 3340 VCO Eurorack AS3340 / AS3345 - Voltage Controlled Oscillators ( VCO ) TThe AS 3340 and AS 3345 are completely self contained, precision voltage controlled oscillators, featuring both exponential and linear control scales and up to four buffered output waveforms: triangle, sawtooth, square, and pulse with voltage controllable pulse width. I also built four Befaco Even VCOs to use with the polyphonic envelop generator This is the CORE of a VCO module made with a CEM3340 chip. So, I thought, ok, I can leave out much of the circuit: All circuit tied to PIN 4: NOT BUILT. 1V/O CV; Mod CV (AC-coupled) PW (Adjusts duty-cycle of square wave up or down) Hard-sync; Outputs. We have all three chips available in the shop. After making a feature list I realised that most of them where covered by Kassutronics design and the collection of 3340 designs on Electric Druid, Eddy Jun 6, 2018 · In 2018 however, thanks to the new boom in analog synthesis, the 3340 VCO chip is once again available, from no less than three sources. AS3340 Voltage Controlled Oscillator (VCO) 16-Pin DIP for just £5. Although they are pin-to-pin compatible, AS3340 needs 2 different resistors than CEM3340. infinitemachinery Oct 20, 2021 · As I am trying to get the best sine wave in my VCOs, I have observed that there is a problem with relatively high level of 2nd harmonic in triangle waves generated by the VCO ICs I am using: CEM3340/AS3340 and SSI2131. I used one for the internally shaped sine, for the other I added a noise generator. 50 * IC AS3340 VCO (Equivalent CEM3340) 6. At the end, it is all up to the musician who uses it, not a chip of a VCO. My PSU i built before worked fine but I couldn't get my VCO running. If you’re looking for a stripboard CEM3340 VCO design this is probably for you. 8K ohm resistor. 3x 47K ohm resistor. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync, is temperature compensated and stable, and provides excellent 1V/Oct tracki For sale4 PCS - AS3340 (CEM 3340 CLONE) The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. Fact: The temperature stabilization not right work in the AS3340 chips ?? I will once again take detailed measurements and document here. 05 + VAT. 1x TL074 op-amp. 1x 1. 4 volt Zener, allowing them to operate off ±15 volt supplies as well as +15, -5 volt supplies. " I did try autotune with bastl 1983 but it doesn't fix the problem. No more knob knocking and having to find C! Easy calibration using the method and circuitry found here. All resistors are 1% and 1nF cap is 1% An on-chip 7. Features: Large Sweep Range: 50,000:1 min; Fully Temperature Compensated The AS Alfa 3340 VCO chip is Alfa’s modern version of the famous CEM3340 voltage-controlled oscillator. The AS3340 is a good cheaper alternative. For DIY folks, the TONE is easy to assemble! Special care in the design ensures oscillation start-up under any power-on sequence and supply conditions. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking Write better code with AI Security. I personally had great trouble getting this VCO tuned over a wide range of octaves. Yes it's probably very very stupid that I didn't breadboard my circuits but I went straight into KiCad and designed my schematic and PCB. The 3340 is available in both 16 pin DIP and SOIC packages, the 3345 is available in 18 pin DIP and 24 pin QFN packages. I am still relatively new to this, about a year in, so please stay easy on me. Note that naming conventions for resistors and currents are taken from the AS3340 datasheet. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync, is temperature compensated and stable, and provides excellent 1V/Oct tracki An on-chip 7. There hasn’t been a better design than the 3340. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking For sale4 PCS - AS3340 (CEM 3340 CLONE) The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. CEMosc is a stable AS3340 based VCO which tracks beautifully, and is feature rich. For voltages greater than -7. I've built up the test circuit on a proto board, and it only oscillates at super high, almost inaudible frequencies unless I place my finger between the -15v and ground rail. Features Hi there, I've been playing with the AS3340 and got some really cool sounds. I need this for the PWM input of the AS3340, because when I fully close or open the PWM pot (0-5V with a regulator), the sound stops although I can still see the wave on the 36 votes, 13 comments. I built it with an AS3340 and worked first try. See: https://imgur. In shor For sale4 PCS - AS3340 (CEM 3340 CLONE) The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. The datasheet for the chip has a circuit [1], as has LookMomNoComputer [2] and electricdruid [3] has a few circuits. 20K pot For sale4 PCS - AS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. The idea behind this is that it's used purely with a 1V/Oct source. CEMosc has at it’s heart a CEM3340 or AS3340. People seem to forget that the CEM3340 that we all admire is now at Rev. You dont see it in the picture, but the green cables lead to a potentiometer. 45K subscribers in the synthdiy community. Jul 28, 2021 · The AS3340 chip in Electrosmith 3340 VCO is manufactured by a subsidiary company by Erica Synths. building, modifying and repairing synthesizers AS3340-HYB New VCO chip. The best thing about this chip is that you don’t need a tempco resistor, so it’s great for its tuning capabilities. That said, getting a VCO to track well over multiple octaves without drift is one of the trickier DIY tasks (though certainly not impossible! obviously people were DIYing this stuff before 3340s became available again a few years back), so just factor that into your AS3340-HYB New VCO chip. Some noob questions here! How would you go about creating a potentiometer that does not go to 0 to full resistance, but lets say lowest would be 5% and highest 95% of resistance. 1x 680 ohm resistor. IC AS3340 VCO (Equivalent CEM3340) 6. The four trimmer procedure comes much closer to the optimal working conditions for the AS3340 and is also much easier to perform. Sep 10, 2022 · Despite the website saying it uses a Curtis chip (CEM3340) mine came with a clone AS3340A. Here is the schematic (apologies ahead as it is a bit rough): And here is the photo of the actual board and front panel: IC AS3340 VCO (Equivalent CEM3340) 6. 95 € IC AS3360 VCA chip (Equivalent Cem3360) 6. In short, it’s everything you need from an analog oscillator, on a chip. 15 Kbytes: Page 5 Pages : Manufacturer A word in advance: this article deals with the first VCO I've ever built and is based on the datasheet schematic combined with the LookMumNoComputer lay-out for the CEM or AS3340 chip. Custom properties. The further miniaturaization led to the creation of rackmount synthesizers , played via MIDI from a master keyboard , and saving performers both money and space. Alfa recommend a 51K resistor on the pulse output instead of the 10K resistor that the CEM3340 uses. 10min later is about to 1212Hz. 5M ohm resistor. For sale4 PCS - AS3340 (CEM 3340 CLONE) The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. Picking a circuit you want to build (I recommend the 4 chips I listed above) and then slowly breaking them down and learning about what you don't understand. AS3340, AS3340A Pin Information AS3340 Dec 26, 2018 · Electric Druid wrote:The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. Any of these chips will work correctly in the designs above. The 3340 is the oscillator chip found in many of the famous polysynths of the analog era; the Sequential Prophet 5 and T8, the Oberheim OB-Xa and OB-8, the Roland Jupiter 6 and MKS-80, and even the MemoryMoog. 1x 3. Electronic components for building analogue synthesisers VCO, VCA, VCF, ADSR etc. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. Here is the link to the datasheet For saleAS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. Jan 4, 2018 · The AS3340 is pin to pin compatable with CEM3340, but the chip is fully redesigned in order to improve stability and eliminate some native faults and it comes in DIP-14, SOIC-14 and QFN-24 cases for very compact designs. Find and fix vulnerabilities Cosmic Instruments 10HP voltage controlled oscillator Eurorack module based on the famous CEM3340/AS3340 chip. 95 € Home / Miscellaneous / AS3340. AS3340, AS3340A Pin Information AS3340 IC AS3320 VCF Filter (Equivalent CEM3320) 6. To minimize self-heating and improve thermo-stability it is recommended to keep VEE = -5V (external power supply). It uses the Alfa AS3340 chip (a CEM3340 clone), famous for its outstanding sound quality. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking. This hybrid package fits in a DIP-16 footprint and is based on AS3345F in QFN-24 with addition of PWM comparator based on similar schematics as internal comparator of AS3340. My problem is, that I can’t get any sound out of this thing. The tuning manual from Rob Hordijk does not work right (see picture). Apr 2, 2021 · I am using AS3340 and CEM3340 chips in some different VCOs. 4 volt Zener diode allows the device to operate off ±15 volt supplies, as well as +12, -5 volt supplies. Pay attention to the notes about the PWM resistors that are different from the CEM3340 and you can’t fail🤙🏼 For sale4 PCS - AS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. which is based on the example circuit provided in the original CEM datasheet. One of the first modules I designed was a AS3340 based VCO. Read In short, it’s everything you need from an analog oscillator, on a chip. Jan 12, 2019 · I test the AS3340 oscillator chip. 1x 24K ohm reistor. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking An on-chip 7. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking For sale4 PCS - AS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. 1x 5. Purchasing Options: Buy for £12. The AS3340 is also available in an SMT package. For DIY folks, the TONE is easy to assemble! A(nother) AS3340 module. But this time, in 2HP, and without manual control, so no coarse nor fine tune knobs. Alfa Rpar’s clone of the CEM3340 VCO on a chip, at a fraction of the price. CEM3340 seems to work OK in every design, AS3340 in most but not in all. The AS3340 is a precision voltage-controlled oscillator (VCO) IC, designed for use in high-quality analog synthesizers. Iike this the lin/exp converter can be adjusted such that +1v is exactly +1 octave. I recommend us-ing an IC socket for U2, such that you can do a powerup test before inserting the AS3340 (see below). Curtis' own company OnChip Systems re-issued the CEM3340 Rev. AS3340 Datasheet (PDF) - JSC ALFA. 4x 100K ohm resistor. AS3340-HYB I impulse-purchased an AS3340 from Electric Druid about a year ago, along with some other chips, and I've been planning to make modules using all of them. 2x 10K ohm resistor. AS3340-HYB In this article learn how to build an easy to use one-pass tuning system for the AS3340. Tracking has been great in my testing, using a fancy timing cap and a HF trimmer helps but it was working pretty well even without those when I was messing with it on my breadboard. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync, is temperature compensated and stable, and provides excellent 1V/Oct tracki Dec 29, 2020 · Only two resistors need to be changed to use as3340. 95 € Voltage Controlled Oscillator (VCO), AS3340-HYB Datasheet, AS3340-HYB circuit, AS3340-HYB data sheet : ALFA, alldatasheet, Datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs and other semiconductors. It is at least done properly by a well respected Eurorack manufacturer unlike the CoolAudio 3340, so I don't feel bad with it. AS3340 AS3345 Voltage Controlled Oscillator(VCO) AS3340 / AS3345 An on-chip 7. Oct 27, 2020 · Just little update, this is a new version of my voltage controlled oscillator , using AS3340 chip ! Schematic and details attached below ! Whats new. Here is part of an email from a well known module supplier: "This is a known problem of the 3340. 3x 1K ohm resistor. AS3340-HYB The AS3310, AS3340, AS3360, and AS3320 are some seriously forgiving chips and electric druid walks through the VCO and VCF designs here and here. Post by infinitemachinery » Tue May 21, 2019 4:04 am. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking The legendary VCO Oscillator chip from the Roland SH-101 and MC-202, MemoryMoog, Sequential Prophet 5 and Pro-One, Digisound Modular, PAiA Proteus, Crumar Spirit, Oberheim OB-8, OB-Xa and OB-SX and many more! These are BRAND NEW chips, this is the real thing as manufactured by Curtis Electromusic with the full blessing of the late Doug Curtis In 2018 however, thanks to the new boom in analog synthesis, the 3340 VCO chip is once again available, from no less than three sources. or is it worth buying old salvaged CEM3340's? Aug 18, 2024 · Alfa Rpar AS produces the AS3340 and AS3345. Stars. Note there are The AS3340 chip is a reissue of the legendary Curtis CEM3340 VCO IC, which was used in many of the synths of the 70s and 80s. The highest frequency I can set with Trim REF PITCH is 956Hz! I think is not korrekt. I'm controlling CV with a TD3 and also using it's Filter In and it sounds really great, especially when layered on top the sound of the TD3. I intend to design add-ons (hence the large amount of spare space on the stripboard layout!) They will appear on the patreon before they appear anywhere else! as i am going to get them all designed and put them all into 1 big video in a month or so! so if you want them as soon as i For saleAS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. I would like to simulate my synth circuit which uses the AS3340 or CEM3340 chip inside LTSpice or Kicad before going out and buying parts. This attempts to compensate for the pitch change with temperature that occurs with VCOs. Easy to build and calibrate too. Is AS3340 the same including sound etc. Dec 10, 2019 · The LFO I build for my synth project is nothing more then a cut down version of the VCO based on the AS3340 chip. The TONE is an analog voltage controlled oscillator with a wide frequency range and 8 trackable octaves. The 2130 also has a square output in addition to the PWM. Jul 5, 2009 · IC AS3340 VCO (Equivalent CEM3340) 6. Is AS3340 a good equivalent of CEM3340? I'm building a bunch of simple VCO's and wanted to use CEM3340 but can't find a seller. I left out a few things, like the high frequency track and Hard- and Soft sync options and I added an inverter for the saw tooth wave. The CEM3340 or its AS3340 equivalent has two main advantages over many other VCO designs. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking What made me chose the SSI2130 over the AS3340 is the mixer section with two AUX inputs. 14 votes, 32 comments. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking The AS3340A offers improvements over the original AS3340 including improved frequency stability against Vcc and VEE . For sale4 PCS - AS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. Do NOT mistake this for the pin-1 indicator, and put the chip in the wrong way as I once did!! I had the chip mounted in the socket the wrong way around and had it switched on for about 20 seconds. CEMosc features: Onboard voltage regulation for tuning and tracking stability Using identical circuits, the AS3340 is essentially a drop-in replacement. This is the internal schematic of the AS3340, as described in the datasheet. G Vco chip Thanks, I was trying to utilise as much functionality from the chip as possible without getting too far into more complicated stuff like sine wave converters. It tracks 1v/Oct very well. 95 € One issue I have is that the chip I have, a surface mount SOIC-16 has no marker for pin 1. I could also never get really deep notes from this design. The internal opamp A2 that drives the dual-transistor in the exponential I have been tinkering for a while now and I’m stuck on building an oscillator. AS3340, AS3340A Pin Information AS3340 Having an interesting problem with a VCO based around the AS3340 chip I'm working on a VCO design using the AS3340 IC, a clone of the famous CEM3340. I've been having some issues with it. It is a modern reissue of the classic CEM3340 VCO, known for its stability, accuracy, and versatility in generating audio waveforms. G! That means there were a considerable number of fixes along the way (not that I'm including Rev. 95 € The devices include an on-chip 7. Anyways, you can find them on thonk for about 10£ plus shipping. Overall it is a fine VCO, it sticks to the datasheet's circuit for trimming. 95 € IC CEM3340 vco chip 29. You can source your own chip, of buy AS3340 direct from me when you order your PCB set and panel. Frequency stability can be improved If external reference voltage (with level approximately 1/3 Vcc) is connected to pin 9 (Soft Sync. The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. 95 € IC AS3340 VCO (Equivalent CEM3340) 49. I didn't know what else to do but try it one way and then, after I'd no success that way, tried the other way. Protection of the chip is also needed. Sep 3, 2019 · I always wanted to make my own synthesizer , modular synthesizer , a year ago i bought this chip (AS3340), and it was a great start for my DIY project ! AS33 The AS3340 chip is Alfa?s modern equivalent of the famous CEM3340 voltage-controlled oscillator. Readme Activity. P. DIP16 enclosure. 4 volt Zener diode allows the device to operate off ±15 volt supplies, as well as 1x AS3340 oscillator chip. I have a AS3340 chip just laying around and thought that I could build something with it. Read more Technical Note: AS3340 Ultra Low Frequency Circuit When using the AS3340 in ULFO applications, some changes in the circuit design are required. It may be bad design, bad adjustment procedure or simply bad chip. AS3340-HYB New VCO chip. Here it is shown in details: saw mid-hill bump zoomed: AS3340: CEM3340(G) triangle low corner at low I have been trying for weeks now to make my AS3340 chip work on a breadboard from the recommended schematic. Sine , The TONE is an analog voltage controlled oscillator with a wide frequency range and 8 trackable octaves. Used for controlling tool temperature. Contribute to promesoft/KicadJE_3340_Experiment development by creating an account on GitHub. It comes in QFN package only, which is a bit more difficult to solder than the leaded package of the AS3340. AS3340 Experiments. 4 volt Zener diode allows the device to operate off ±15 volt supplies, as well as +15,-5 volt supplies. Cabintech Global provides CEfx effects modules and specialty semiconductors from Coolaudio, Xvive, Cliff, Alfa Rpar, and others with a focus in the area of digital and analog audio. I have two brands of 3340 based VCOs three have CEM3340 and one has a AS3340 and all have the same problem. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync,is temperature compensated and stable, and provides excellent 1V/Oct tracking Hey guys I've built a VCO around the AS3340 which was working perfectly on breadboard. Read datasheets. AS3340 Building Blocks This is the internal schematic of the AS3340, as described in the datasheet: There are four building blocks in the AS3340 that affect the 1V/Oct tuning. CEM3340 replacement; Large Sweep Range: 50,000:1 min May 21, 2019 · AS3340-HYB - VCO for circuits where requirements on influence of PWM signal on frequency are strict. Increase in nose radius also increases the value of chip equivalent and improves tool life. The correct option is D All of the above Chip equivalent = Engaged cutting edge length Plane area of cut. 2x 1M ohm resistor. Features. The frequency (1000Hz) is not stable after power on and runs away. I'm not yet quite sure how the chip exactly works, but I think there is already a linear/exponential converter integrated. Put jumper over JP1, so pin 14 is connected to analog ground AGND. It works with both the CEM and AS chips and performs the same. Here is a wonderful Wikipedia page that lists original CEM and SSM chips in synthesizers to help with replacment decisions: The AS3340 is Alfa’s fantastic clone of the famous CEM3340 voltage-controlled oscillator. G. AS3340-HYB Dec 10, 2021 · The VCOs in his monosynth are based around the AS3340 VCO chip, which is a clone of the Curtis Electromusic Specialties ‘ CEM3340 chip (used in machines such as the Oberheim OB-Xa, the Roland the AS3340 oscillator chip (U2). The oscillator timing capacitor C1 should be NP0 or C0G ceramic for temperature sta- AS3340-HYB New VCO chip. At the time I didn't know anything about either chip, I just wanted a VCO to build and play with. B that fixes this issue on the chip. Of course if you're planning a from scratch build, more power to you and disregard! To OP: Check out the VCO maximus schematic, you could probably cram it into a more compact solution than the previously mentioned one. I offer it here also in case people are interested. For saleAS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. 6K ohm resistor. AS3340. G in the list, as it happens). 95 € IC CEM3340 Rev. Good luck! For sale4 PCS - AS3340 (CEM 3340 CLONE)The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. 1 watching Forks. building, modifying and repairing synthesizers Jan 14, 2020 · In this picture you can also see the annoying little circle at the bottom of the AS3340 chip. 1x 2K ohm resistor. The AS3340 chip is Alfa’s modern equivalent of the famous CEM3340 voltage-controlled oscillator. 5 volts, a series current limiting resistor must be added between pin 3 and the negative supply. 48K subscribers in the synthdiy community. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync, is temperature compensated and stable, and provides excellent 1V/Oct tracki Mar 21, 2020 · I'm trying to build the AS3340 vco as the Eddy Bergman version,working at +/-12v but I only need the triangle output. Looks like the 3340 chip is pretty ubiquitous for that but does anyone have a reliable source for these in… The CEM3340 VCO chip has been re-released as the Rev. It is a monolithic IC which just needs a few passives, and therefore perfect for my entry into the DIY modular synth world. Jan 14, 2020 · In this picture you can also see the annoying little circle at the bottom of the AS3340 chip. It’s everything you need from an analog oscillator, on one chip. AS3340-HYB AS3340: CEM3340(G) high frequency triangle: high frequency saw: high frequency square: AS3340: CEM3340(G) saw falling edge: saw mid-hill bump: Because of how tri-to-saw converter works, there is inevitable bump in the middle of saw rising slope. My friend asked me to use the AS3340 chip, to build some for him, and there is no discussion about that. 0 stars Watchers. CEM3340 replacement; Large Sweep Range: 50,000:1 min Jan 22, 2018 · Hi, Rolf It is hard to evaluate whole chip line after one chip test. The issue is I can not seem to find any software that will simulate these chips. The AS3340 is pin to pin compatable with CEM3340, but the chip is fully redesigned in order to improve stability and eliminate some native faults and it also comes in DIP-14, SOIC-14 and QFN-24 cases for very compact designs. (I was just getting into synthesizer building when I made this so I made some stupid decisions. My layout is based roughly on Look Mum No Computers Cem3340 Osc and the As3340 Datasheet. adjustment procedure does not guarantee that the AS3340 will be in its optimal temperature compensation range at the 1V/Oct scale. Four waveforms: rectangle, sawtooth, triangle, sine; Pulse width control for rectangle A VCO using the AS3340 chip Resources. kyn sjacyv ipps pnvx xaeezbd zsqa fwv cnmbzj jzftgfh smtddq