OVERVIEW
The S9408 DACPOT™ is a serial input, voltage output, quad 8-bit digital to analog converter. The S9408 operates from a single +2.7V to +5.5V supply. Internal precision buffers swing rail-to-rail and the reference input range includes both ground and the positive supply.
The S9408 integrates four 8-bit DACs and their associated circuits which include an enhanced unity-gain operational amplifier output, an 8-bit data latch, an 8-bit non volatile register, and an industry-standard serial interface for reading and writing data to the DACs’ data latches and registers. The DACs are independently programmable and each has its own electrically isolated Vreference inputs.

FEATURES
• Four 8-Bit DACS
   – Differential Non-linearity - ±0.5LSB max
   – Integral Non-Linearity - ±1LSB max
• Each DAC has Independent Reference Inputs
   – Output Buffer Amplifiers Swing Rail-to-Rail
   – Ground to VDD Reference Input Range
• Each DAC’s Digital Input Data Maintained in
   Nonvolatile EEPROM
• Power-On Reset Reloads Registers with
   Nonvolatile Data
• Simple Serial Interface for Reading and Writing
   DAC values, SPI™ and QSPI™ compatible.
• Fully operational from 2.7V to 5.5V
• Low Power: <1mW @ 2.7V