Does anyone know where to get this chip? I have been searching for this one a couple of weeks now, with no luck. Maxim is not forthcoming with samples, and all suppliers seem to be out of stock with rediculous lead times (like April 2003!). Only Newark quoted me a resonable lead time of 21 days (and I'm not sure I believe them), but minimum order is 18 units (SOIC version too).
This is such a nice chip, and I have all the parts necessary to put together a dandy function generator with it. Till then, I'm stuck with my much less satisfactory XR2206 based function generator...
I guess there is the possibility for a group purchase here... but how reliable is that lead time provided by Newark?
Any leads? Anyone?
This is such a nice chip, and I have all the parts necessary to put together a dandy function generator with it. Till then, I'm stuck with my much less satisfactory XR2206 based function generator...
I guess there is the possibility for a group purchase here... but how reliable is that lead time provided by Newark?
Any leads? Anyone?
hifiZen said:
Ahh, but they are... I got a few as samples.
Check this page: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1257
It's not too obvious but under "LINKS TO MORE INFORMATION"(near the bottom), there is a "REQUEST SAMPLES" thing...
Have fun!
Maxim does well by copying others' designs
the original of this chip was an Intersil design. Using www.findchips.com search under ICL8038 -- they are about $4 in units.
the original of this chip was an Intersil design. Using www.findchips.com search under ICL8038 -- they are about $4 in units.
MAX038
Carefull! Although functionally the MAX038 and the ICL8038 are similar, they are not drop-in substitutes for each other. There are not-so-subtle differences, check the data sheets to make sure you get the one you want.
Jan Didden
Carefull! Although functionally the MAX038 and the ICL8038 are similar, they are not drop-in substitutes for each other. There are not-so-subtle differences, check the data sheets to make sure you get the one you want.
Jan Didden
ELFA in Sweden has this chip and they will also export.
ICL8038
Price 66,60 Sekunder (9 SEK = 1 USD)
http://www.elfa.se/elfa/produkter/se/22/221235.htm
MAX038
Price 31,70 SEK
http://www.elfa.se/elfa/produkter/se/20/2003202.htm
ICL8038
Price 66,60 Sekunder (9 SEK = 1 USD)
http://www.elfa.se/elfa/produkter/se/22/221235.htm
MAX038
Price 31,70 SEK
http://www.elfa.se/elfa/produkter/se/20/2003202.htm
Hey! Why didn't they give me any samples! 
I've tried three times over the last few months, and haven't even heard a peep out of them. I even tried ordering them (as in, actually paying for them!) through their website. Maybe they're on to me... 😀
Can somebody spare one for me? I'm more than happy to cover shipping cost, and have a large inventory of parts to trade. I guess I could always order from ELFA, but... er, um... well my Swedish is a tad rusty...
The ICL8038 looks ok, but it lacks some of the features which set the MAX038 apart from the crowd. 300kHz vs. 20+MHz is the major one.
Thanks,
I've tried three times over the last few months, and haven't even heard a peep out of them. I even tried ordering them (as in, actually paying for them!) through their website. Maybe they're on to me... 😀Can somebody spare one for me? I'm more than happy to cover shipping cost, and have a large inventory of parts to trade. I guess I could always order from ELFA, but... er, um... well my Swedish is a tad rusty...
The ICL8038 looks ok, but it lacks some of the features which set the MAX038 apart from the crowd. 300kHz vs. 20+MHz is the major one.
Thanks,
Hi,
I wish I could help, but I have plans for mine - and if they are getting bad about handing out samples, I don't want to shoot myself in the foot, if you get my drift!
Sorry & Good luck!
Gaz
I wish I could help, but I have plans for mine - and if they are getting bad about handing out samples, I don't want to shoot myself in the foot, if you get my drift!
Sorry & Good luck!
Gaz
300kHz vs 20MHz?
Maxim makes some very neat stuff-- but they get so-so marks from a lot of engineers who have the "out-of-stock" blues, particularly in 1999 -2000.
No, the ICL8038 isn't a drop in for the MAX0838 -- (the latter being 20 pin!) but the idea is pretty much the same. Just look at the block diagrams. I wonder, however, how long Intersil is going to be making the 8038 as it's not recommended for new designs.
It's nice to have all the artwork done for a PCB and then find that the part is on a 6-week backorder since the foundry in Taiwan is switching over. Or worse yet, as I pointed out with On-Semi's HV MOSFET's -- they are dropped from the product line.
Maxim makes some very neat stuff-- but they get so-so marks from a lot of engineers who have the "out-of-stock" blues, particularly in 1999 -2000.
No, the ICL8038 isn't a drop in for the MAX0838 -- (the latter being 20 pin!) but the idea is pretty much the same. Just look at the block diagrams. I wonder, however, how long Intersil is going to be making the 8038 as it's not recommended for new designs.
It's nice to have all the artwork done for a PCB and then find that the part is on a 6-week backorder since the foundry in Taiwan is switching over. Or worse yet, as I pointed out with On-Semi's HV MOSFET's -- they are dropped from the product line.
MAX038
On thing I seem to remember is that the MAX038 has a ground ref for working with dual supplies, so the output is symmetrical around ground. The ICL8038 has it's output at 1/3 to 2/3 of supply voltage IIRC, so you need to AC couple the output.
There is also a difference in setting and/or sweeping the freq.
Jan Didden
On thing I seem to remember is that the MAX038 has a ground ref for working with dual supplies, so the output is symmetrical around ground. The ICL8038 has it's output at 1/3 to 2/3 of supply voltage IIRC, so you need to AC couple the output.
There is also a difference in setting and/or sweeping the freq.
Jan Didden
peranders said:
Think you got the price wrong for the MAX. It says 317 SEK,
that is around $35 - $40.
hifiZen said:
Are you still looking for this? I have a few somewhere... if I can find them, you're welcome to one of them.
Maxim and Linear Tech
I forgot to mention, unless you're an OEM it seems that Digikey is the only distributor for Maxim and Linear Tech -- or you can order small lots through the companies.<p> I find the website www.findchips.com to be very helpful in sourcing IC's and a lot of other stuff.
I forgot to mention, unless you're an OEM it seems that Digikey is the only distributor for Maxim and Linear Tech -- or you can order small lots through the companies.<p> I find the website www.findchips.com to be very helpful in sourcing IC's and a lot of other stuff.
Re: MAX038 in stock at Digikey
I checked digikey today and they are out of stock. It shows $12.45 each minimum order 35 ship date 4/15/2003. Maybe someone bought them out. I have had a hard time finding certain maxim parts also. Now I don't even look at their website since I will find some part I want to use and cant get it. You might want to look at TI/BurrBrown. They actually send free samples when I request them.
I am interested in building a function generator in the future, and would like to know what you end up using.
Darrell Harmon
jackinnj said:
I checked digikey today and they are out of stock. It shows $12.45 each minimum order 35 ship date 4/15/2003. Maybe someone bought them out. I have had a hard time finding certain maxim parts also. Now I don't even look at their website since I will find some part I want to use and cant get it. You might want to look at TI/BurrBrown. They actually send free samples when I request them.
I am interested in building a function generator in the future, and would like to know what you end up using.
Darrell Harmon
FN generators
The easiest function generator is a 555, but for really nice quality and low distortion, and assuming you can program something like a Basic Stamp or PIC 16F84-- you use the <em>FREQOT</em> function and a pair of Linear Tech 5th order low pass filters (LTC1063) (and one regular analog filter to knock down the clock-through) -- this idea appeared in Audio Amateur about 5 years ago:
The easiest function generator is a 555, but for really nice quality and low distortion, and assuming you can program something like a Basic Stamp or PIC 16F84-- you use the <em>FREQOT</em> function and a pair of Linear Tech 5th order low pass filters (LTC1063) (and one regular analog filter to knock down the clock-through) -- this idea appeared in Audio Amateur about 5 years ago:
Attachments
Another option would be to use a fast DAC, some ram, a counter, a clock source and a microcontroller. The DAC would be connected to the data lines of the SRAM, and the address lines would be connected to the counter. The SRAM could be preloaded with the waveform by the microcontroller. All that would be necessary after that would be a variable frequency digital clock source for the counter/DAC. 80Mhz DACs are cheap.
I am planning to build a DSO with a similar setup but an ADC instead of a DAC.
I am planning to build a DSO with a similar setup but an ADC instead of a DAC.
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