3 .\" Adapted to S-roff by Steffen (Daode) Nurpmeso <steffen@sdaoden.eu>.
15 define // 'over down 10'
28 define qqq '{C prime} sub'
36 define sunc '{ sin x } / x'
37 define vddm1V 'vv DD - 1 ^ roman V'
38 define vssp1V 'vv SS + 1 ^ roman V'
41 The following slide shows the complete schematics of the
42 fully-differential RIC. The operation includes a
43 correlated-double-sampling phase that occurs once every 256
44 clock periods, also called the
45 .i "spreading ratio" .
46 This reset phase is controlled by clocks $ DP sub 1 $ and $ DP
47 sub 2 $ in which the integrator is initialized by totally
48 removing the charge from $ cc F $ and storing the low-frequency
49 noise of the op amp in $ cc C $. At the same time the comparison
78 The faster clocks are $ PN $, $ ITS $ and $ SP $. The sampling
79 capacitor $ cc S $ performs the delayed subtraction of a sample
80 of the input signal $ +- ^ vv SIG $ and a choice of $ - ^ vv REF
81 $, $ AGND $ or $ + ^ vv REF $ according to the operations
82 performed by the logic partially depicted operating on past
83 results of the comparisons. The synchronous comparators are
84 reset at this fast rates, thus performing one comparison for
85 every fast clock cycle. The dynamic common-mode feedback
86 arrangement operates synchronously with the reset time slot and
87 its configuration is equivalent to that in the differential