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README.md

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 ## SAR
 
-The adc is composed of a top-plate sampled CDAC, with a capacitor array of 
+The ADC is composed of a top-plate sampled CDAC, with a capacitor array of 
 mimimum sized MIM caps.
 
 The comparator is a single-stage regenerative comparator, with a MOM array 
@@ -21,6 +21,15 @@
 ![layout](https://github.com/chrische-xx/caravel_user_project_analog/blob/main/docs/layout.png)
 
 
+## Architecture
+
+The ADC is composed of a differential top-plate sampled dac, which is made from an array of MIM capacitors.
+The comparator is a regenerative comparator, which is followed by a latch to retain the output state during
+reset. The latch output is fed into the logic section, which performs the standard binary search algorithm. 
+
+![layout](https://github.com/chrische-xx/caravel_user_project_analog/blob/main/docs/pictures/architecture.png)
+
+
 ## Simulation
 
 The simulation is carried out using ngspice using the mixed-mode xspice capabilities.