[SI-LIST] ADC Grounding question - FULLY differential system
- From: "JP Nicholls" <jpnicholls@xxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Wed, 18 Dec 2002 11:30:50 -0000
I have a question concerning the grounding of ADCs in a 100% differential
system. What I mean by this is that the analog inputs AND digital outputs are
all differential, for example the Analog Devices 9430. The digital outputs are
LVDS, a constant current technology.
Differential signalling is the traditional way to transmit signals between two
systems
whose grounds are NOT CONNECTED. So do I need to join analog and digital
ground
at all, save on the chassis and/or power supply circuitry?
Many thanks,
--
JP Nicholls / jpnicholls@xxxxxxxx
Powerwave UK Ltd
Embassy House
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Bristol, BS8 1SB
United Kingdom
Tel: +44 (0)117 910 5600
Fax: +44 (0)117 910 5601
Web: http://www.powerwave.com
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