EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX11312 PIXI, 12-Port Programmable Mixed-Signal I/O with 12-Bit ADC, 12-Bit DAC, Analog Switches, and GPIO General Description Benefits and Features The MAX11312 integrates a PIXI, 12-bit, multichannel, 12 Configurable Mixed-Signal Ports Maximize Design analog-to-digital converter (ADC) and a 12-bit, multichannel, Flexibility Across Platforms buffered digital-to-analog converter (DAC) in a single Up to 12 12-Bit ADC Inputs integrated circuit. This device offers 12 mixed-signal high- - Single-Ended, Differential, or Pseudo-Differential voltage, bipolar ports, which are configurable as an ADC - Range Options: 0 to 2.5V, 5V, 0 to +10V, -10V to 0V analog input, a DAC analog output, a general purpose - Programmable Sample Averaging Per ADC Port input (GPI), a general-purpose output (GPO), or an analog - Unique Voltage Reference for Each ADC PIXI Port switch terminal. One internal and two external temperature Up to 12 12-Bit DAC Outputs sensors track junction and environmental temperature. - Range Options: 5V, 0 to +10V, -10V to 0V Adjacent pairs of ports are configurable as a logic-level - 25mA Current Drive Capability with Overcurrent translator for open-drain devices or an analog switch. Protection PIXI ports provide highly flexible hardware configuration Up to 12 General-Purpose Digital I/Os for 12-bit mixed-signal applications. The MAX11312 is best - 0 to +5V GPI Input Range suited for applications that demand a mixture of analog - 0 to +2.5V GPI Programmable Threshold Range and digital functions. Each port is individually configurable - 0 to +10V GPO Programmable Output Range with up to four selectable voltage ranges within the -10V to +10V range. - Logic-Level-Shifting Between Any Two Pins The device allows for the averaging of 2, 4, 8, 16, 32, 60 Analog Switch Between Adjacent PIXI Ports 64, or 128 ADC samples from each ADC-configured Internal/External Temperature Sensors, 1C Accuracy port to improve noise performance. A DAC-configured output Adapts to Specific Application Requirements and Allows port can drive up to 25mA. The GPIO ports can be for Easy Reconfiguration as System Needs Change programmed to user-defined logic levels, and a GPI coupled with a GPO forms a logic-level translator. Configurability of Functions Enables Optimized PCB Layout Internal and external temperature measurements monitor Reduces BOM Cost with Fewer Components in a programmable conditions of minimum and maximum Small Footprint temperature limits, using the interrupt to notify the host if one 2 25mm 32-Pin TQFN or more conditions occur. The temperature measurement results are made available through the serial interface. The device 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. 2 Ordering Information appears at end of data sheet. The MAX11312 uses a 400kHz I C-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 -12.0V to +12.0V. The MAX11312 is available in a 32-pin TQFN, 5mm x 5mm package specified over the -40C to +105C temperature range. Applications Base-Station RF Power Device Bias Controllers System Supervision and Control Power-Supply Monitoring Industrial Control and Automation Control for Optical Components PIXI is a trademark of Maxim Integrated Products, Inc. 19-7945 Rev 1 7/19MAX11312 PIXI, 12-Port Programmable Mixed-Signal I/O with 12-Bit ADC, 12-Bit DAC, Analog Switches, and GPIO Functional Diagram DVDD DAC REF ADC INT REF AVDD AVDDIO CLOCK GENERATOR D1P 2.5V D1N INTERNAL TEMPERATURE EXT AND INT MAX11312 REFERENCE D0P MONITORS TEMP SENSORS 2.5V D0N REFERENCE (0 x 5) MUX PORT x+1 12 ADC CNVT ADC 12 SEQUENCER PORT x AD1 12 PIXI PORT DAC SERIAL DAC MANAGER SEQUENCER INTERFACE PORT y+1 AD0 AND GPI 12 DIGITAL SCL PORT y CORE 12 GPO (6 y 11) SDA INT DGND AGND1 AGND AVSSIO Maxim Integrated 2 www.maximintegrated.com