http://www.circuitdesign.info/blog/2009/06/the-benefits-of-differential-circuits/ Tutorials and Insights in Electronics and Circuit Design Fri, 19 Mar 2010 03:10:53 +0000 hourly 1 http://www.circuitdesign.info/blog/2009/06/the-benefits-of-differential-circuits/comment-page-1/#comment-691 Arshad Iqbal Tue, 23 Feb 2010 18:15:06 +0000 http://www.circuitdesign.info/blog/?p=753#comment-691 I completely agree with Mark's statement. CMRR is the single most important criteria that makes the differential circuits stand out. If a circuit can correctly operate at lower SNR, single ended circuits would be fine. Differential circuits also impose upon layout to be symmetrical especially the difference sensing amplifiers and noise coupling or noise shielding structures. I completely agree with Mark’s statement. CMRR is the single most important criteria that makes the differential circuits stand out. If a circuit can correctly operate at lower SNR, single ended circuits would be fine. Differential circuits also impose upon layout to be symmetrical especially the difference sensing amplifiers and noise coupling or noise shielding structures.

]]> http://www.circuitdesign.info/blog/2009/06/the-benefits-of-differential-circuits/comment-page-1/#comment-416 Mark Lehne Thu, 23 Jul 2009 15:31:13 +0000 http://www.circuitdesign.info/blog/?p=753#comment-416 Good discussion. In my experience, differential circuits nearly always have more significant benefits than single ended circuits. The big one in ICs using single ended circuits is the risk of unknown spurious signals coupling into a critical circuit through the substrate, package etc, and potentially destroying performance. This makes common mode rejection is a huge plus. In my mind, the primary drawback to differential circuits is layout complexity. If the required SNR for a circuit is low, and I want to minimize complexity, that is when single ended circuits have a niche. Good discussion. In my experience, differential circuits nearly always have more significant benefits than single ended circuits. The big one in ICs using single ended circuits is the risk of unknown spurious signals coupling into a critical circuit through the substrate, package etc, and potentially destroying performance. This makes common mode rejection is a huge plus. In my mind, the primary drawback to differential circuits is layout complexity. If the required SNR for a circuit is low, and I want to minimize complexity, that is when single ended circuits have a niche.

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