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Old 31st December 2003, 05:37 PM   #1
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Default DIY FM Tuner challenge

I'd like to monkey-see-monkey-do a FM tuner, built mostly with free samples from TI. Sound like a fun design project to anyone?
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Old 31st December 2003, 06:33 PM   #2
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Did you have any specific parts/combos in mind?
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Old 31st December 2003, 07:11 PM   #3
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I just clicked my way through a block diagram (which I can't find again) at TI.COM, and ordered these recommended & available parts:

ADS807E, MSP430F1101AIDW, PCM1716E, THS3001CD, TMS320VC5402GGU100, TPS5602IDBT, TRF6900APT

I don't know which are actually appropriate (or much else; hopin' you can tell me). The price sure is right. TI ships 'em overnight, free (US). With a few more miscellaneous parts, and a small enclosure...

Crossovers & Amps abound online (former is complete; latter in-progress). A decent FM tuner design would be a welcome step toward a completely DIYed system.

Thanks,
Steve
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Old 31st December 2003, 07:28 PM   #4
elizard is offline elizard  Canada
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Is this perhaps what you were talking about?

http://focus.ti.com/docs/apps/catalo...jhtml?bdId=576
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Old 31st December 2003, 08:41 PM   #5
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Yeah; That's the one! The 'Digital' in the title threw me off. I guess it receives regular FM signals, converts to digital & back to analog?

With a wall-wart in the back & LED module on the front...??
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Old 31st December 2003, 08:52 PM   #6
elizard is offline elizard  Canada
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Quote:
Originally posted by cadmaniac
Yeah; That's the one! The 'Digital' in the title threw me off. I guess it receives regular FM signals, converts to digital & back to analog?

With a wall-wart in the back & LED module on the front...??

No idea, i just did a quick search on ti
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Old 31st December 2003, 08:59 PM   #7
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Default i don't think so, steve

The referenced site lists the reciever component as:

'The TRF6900A single-chip solution is an integrated circuit intended for use as a low cost FSK transceiver to establish a frequency-agile, half-duplex, bidirectional RF link.'

Looks like a design for a handheld radio. Might work for a home broadcast solution but I don't think it will work for regular fm radio reception.

Happy New Year

Dave
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Old 31st December 2003, 09:20 PM   #8
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Dammit; I KNEW I misunderstood something important.

OK, Folks: Schematics and/or parts recommendations heartily welcomed.
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Old 31st December 2003, 10:41 PM   #9
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this looks interesting:
http://www.radioscape.com/Products/D...it/default.asp
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Old 1st January 2004, 12:30 AM   #10
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VERY interesting; indeed. I just emailed 'em about its availability (single unit for ordinary human). Seems to be a massive-purchase-OEM kinda thing.
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