PIXI, 12-Port Programmable Mixed-Signal I/O with 12-Bit ADC, 12-Bit DAC, Analog Switches, and GPIO

Industry's First Configurable High-Voltage Mixed Signal I/O Allows User-Defined ADC, DAC, or GPIO Functionality

Please check latest availability status for a specific part variant.


The MAX11311 integrates a PIXI™, 12-bit, multichannel, analog-to-digital converter (ADC) and a 12-bit, multichannel, buffered digital-to-analog converter (DAC) in a single integrated circuit. This device offers 12 mixed-signal highvoltage, bipolar ports, which are configurable as an ADC analog input, a DAC analog output, a general-purpose input (GPI), a general-purpose output (GPO), or an analog switch terminal. One internal and two external temperature sensors track junction and environmental temperature. Adjacent pairs of ports are configurable as a logic-level translator for open-drain devices or an analog switch.

PIXI ports provide highly flexible hardware configuration for 12-bit mixed-signal applications. The MAX11311 is best suited for applications that demand a mixture of analog and digital functions. Each port is individually configurable with up to four selectable voltage ranges within -10V to +10V.

The MAX11311 allows for the averaging of 2, 4, 8, 16, 32, 64, or 128 ADC samples from each ADC-configured port to improve noise performance. A DAC-configured output port can drive up to 25mA. The GPIO ports can be programmed to user-defined logic levels, and a GPI coupled with a GPO forms a logic-level translator.

Internal and external temperature measurements monitor programmable conditions of minimum and maximum temperature limits, using the interrupt to notify the host if one or more conditions occur. The temperature measurement results are made available through the serial interface.

The MAX11311 features an internal, low-noise 2.5V voltage reference and provides the option to use external voltage references with separate inputs for the DAC and ADC. The device uses a 4-wire, 20MHz, SPI-compatible serial interface, operating from a 5V analog supply and a 1.8V to 5.0V digital supply. The PIXI port supply voltages operate from a wide range of -12.0V to +12.0V.

The MAX11311 is available in a 32-pin TQFN, 5mm x 5mm package or a 48-pin TQFP, 7mm x 7mm package specified over the -40°C to +105°C temperature range.

FAQs: MAX11300 FAQs: MAX11300
MAX11311: Functional Diagram MAX11311: Functional Diagram Enlarge+

Key Features

  • 12 Configurable Mixed-Signal Ports Maximize Design Flexibility Across Platforms
    • Up to 12 12-Bit ADC Inputs
      • Single-Ended, Differential, or Pseudo-Differential Range Options: 0 to 2.5V, ±5V, 0 to +10V, -10V to 0V
      • Programmable Sample Averaging Per ADC Port
      • Unique Voltage Reference for Each ADC PIXI Port
    • Up to 12 12-Bit DAC Outputs
      • Range Options: ±5V, 0 to +10V, -10V to 0V
      • 25mA Current Drive Capability with Overcurrent Protection
    • Up to 12 General-Purpose Digital I/Os
      • 0 to +5V GPI Input Range
      • 0 to +2.5V GPI Programmable Threshold Range
      • 0 to +10V GPO Programmable Output Range
      • Logic-Level Shifting Between Any Two Pins
    • 60Ω Analog Switch Between Adjacent PIXI Ports
    • Internal/External Temperature Sensors, ±1°C Accuracy
  • Adapts to Specific Application Requirements and Allows for Easy Reconfiguration as System Needs Change
  • Configurability of Functions Enables Optimized PCB Layout
  • Reduces BOM Cost with Fewer Components in Small Footprint
    • 25mm2 32-Pin TQFN


  • Base Station RF Power Device Bias Controllers
  • Control for Optical Components
  • Industrial Control and Automation
  • Power-Supply Monitoring
  • System Supervision and Control

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX11311PMB: MAX11311PMB# Peripheral Module for the MAX11311
MAX11311SYS1: MAX11311PMB# Peripheral Module for the MAX11311
Product Reliability Reports: MAX11311.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


Related Resources