LF: New DDS Chips

To:	"LF Group \(E-mail\)" <[email protected]>, "KZY \(E-mail\)" <[email protected]>
Subject:	LF: New DDS Chips
From:	"Talbot Andrew" <[email protected]>
Date:	Fri, 27 Apr 2001 14:33:24 +0100
Reply-to:	[email protected]
Sender:	<[email protected]>

HF Instruments now have a limited number of AD9851 DDS Chips. These are functionally similar to and have the same connections as the AD9850 as used in my DDS module, and are backward compatible with it for commands but can be used at a higher clock rate, up to 180MHz.

The AD9851 includes an optional on chip X6 PLL multiplier so the actual clock oscillator need only be up to 30MHz rather than finding TTL oscillators up to the full clock rate. The data sheet states that the added phase noise due to the PLL is 'not noticable'

The chips are available on a first come first served basis at £29 each from HF Instruments. Bare boards are also available at £8 each (but the chips cannot be supplied alread mounted).

Please note also that HF Instruments are no longer able to take credit card orders, only cheques or similar can be accepted. WWW.HF-INST.CO.UK

Andy G4JNT





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