Auxiliary Cells

Auxiliary cells, similar to standard cells in digital design, are one of the building blocks for the analog generators. They have simple analog functionality usually associated with the structure of the auxiliary cell. Since the structure and the functionality of the auxiliary cells do not change with technology node, they can be easily ported from one process design kit to another. Below is a list of auxiliary cells used for various analog block generations:

Auxiliary Cell

Schematic

Analog Block Generation Usage

Differential switched capacitor

AD-PLL

Fully Differential Tri-State Buffer

AD-PLL

Unit Power Switch

DLDO

2:1 SC Cell

DC/DC Converter

Edge Pursuit Comparator

ADC

Bootstrap Switch

ADC

Unit Cap Cell

ADC

Pre-Charge Switch

CDC

Level Converter with multiple power lines

CDC

INV with multiple power lines

CDC/Thermal Sensor

NAND2 with multiple power lines

CDC/Thermal Sensor

BUF with multiple power lines

CDC/Thermal Sensor

Header Cell

Thermal Sensor

Column Mux

Memory Macro

Pre-Charge Circuit

Memory Macro

Pre-Decoder

Memory Macro

Row/Column Decoder

Memory Macro

Sense Amplifier

 

Memory Macro

WL Driver

Memory Macro

Write Driver

Memory Macro