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Industrial Configurable Analog I/O

Fully Integrated, Robust, High Precision Configurable Analog IO

Product Details

The MAX22000 is an industrial-grade configurable analog input/output device that can be configured on-the-fly in software as a voltage input or output, or current input or output. Additional inputs are available to measure other analog signals.

The device offers an 18-bit DAC with fast settling time as well as a 24-bit delta-sigma ADC. The ADC and DAC can individually choose between an internal or an external reference.

The MAX22000 supports the ADC with a low-noise programmable gain amplifier (PGA), with high-voltage and low-voltage input ranges to support RTD and thermocouple measurements. Additional auxiliary inputs are provided to measure cold junction temperatures on-board.

The MAX22000 communicates through a high speed 20MHz SPI bus for all configuration and management information as well as for conversion results. An optional 8-bit CRC enhances the reliability of the SPI interface, protecting against all 8-bit bursts as well as all double-bit errors.

The MAX22000 operates from 2.7V to 3.6V analog and digital supplies and up to ±24V high-voltage supplies. The device is available in a 64-pin LGA package and operates over the -40°C to +125°C industrial temperature range.

Key Features

  • Accurate
    • AOVM Mode:
      • 0.02%FSR Accuracy, Room Temp
      • 0.1%FSR Accuracy, ±50°C Temp Variation
    • 5ppm/°C Internal Reference
  • Flexible
    • 6 Analog Inputs/1 Analog Output Using Software Configurable Voltage and Current
    • Two Auxiliary ADC Inputs for Cold Junction Measurements
    • RTD Input Mode in 2, 3, or 4-Wire Configurations
    • Thermocouple Input Mode
    • ±12.5V Input/Output Voltage Range
    • ±25mA or ±2.5mA Output Current Range
    • ±25V, ±2.5V, ±500mV, ±250mV, and ±125mV PGA Input Voltage Ranges
    • +24V Field Supply for Current Loop
    • Optional External Reference for ADC and/or DAC
    • Six GPIOs
    • 20MHz SPI Interface
  • Robust
    • ±36V Protection on All Analog I/O Ports
    • Overcurrrent Protection
    • Thermal Shutdown
    • Undervoltage Interrupt on All High Voltage Supplies
    • CRC Detection
    • Open Detection on All Analog Inputs
    • 2kV HBM Protection on All Pins
  • -40°C to +125°C Operating Temperature Range
  • Small 9mm x 9.5mm 64-Pin LGA Package

Applications/Uses

  • Distributed Control Systems
  • Process Control
  • Programmable Logic Controllers (PLC)
  • Programmable Automation Controllers (PAC)
Parametric specs for Analog I/O
Analog Input/Output Analog Input
Analog Output
Interface Type SPI
Output Resolution (bits) 18
Input Resolution (bits) 24
VOUT (V) (min) -12.5
VOUT (V) (max) 12.5
IOUT (mA) (min) -25
IOUT (mA) (max) 25
Oper. Temp. (°C) -40 to +125
Package/Pins LGA HYBRID/64
Budgetary
Price (See Notes)
$25.30 @1k
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Simplified Block Diagram

MAX22000: Functional Block Diagram MAX22000: Functional Block Diagram Zoom icon

Design & Development

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Description

The MAX22000 evaluation kit (EV kit) provides the hardware and software necessary to evaluate the MAX22000 industrial configurable analog I/O, both natively, and in conjunction with the MAX14914A industrial digital I/O. The MAX22000 EV kit communicates with a graphical user interface (GUI) running on a PC through a USB port.

View Details

Features

  • All Modes Accessible: Voltage Input, Voltage Output, Current Input, Current Output, and Temperature Measurement
  • Accesses All Spare Inputs
  • Includes MAX14914A Industrial Digital I/O
  • Windows® 10, Windows 8.1, and Windows 7 Compatible Software
  • Proven PCB Layout
  • Fully Assembled and Tested

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Support & Training

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Parameters

Parametric specs for Analog I/O
Analog Input/Output Analog Input
Analog Output
Interface Type SPI
Output Resolution (bits) 18
Input Resolution (bits) 24
VOUT (V) (min) -12.5
VOUT (V) (max) 12.5
IOUT (mA) (min) -25
IOUT (mA) (max) 25
Oper. Temp. (°C) -40 to +125
Package/Pins LGA HYBRID/64
Budgetary
Price (See Notes)
$25.30 @1k

Key Features

  • Accurate
    • AOVM Mode:
      • 0.02%FSR Accuracy, Room Temp
      • 0.1%FSR Accuracy, ±50°C Temp Variation
    • 5ppm/°C Internal Reference
  • Flexible
    • 6 Analog Inputs/1 Analog Output Using Software Configurable Voltage and Current
    • Two Auxiliary ADC Inputs for Cold Junction Measurements
    • RTD Input Mode in 2, 3, or 4-Wire Configurations
    • Thermocouple Input Mode
    • ±12.5V Input/Output Voltage Range
    • ±25mA or ±2.5mA Output Current Range
    • ±25V, ±2.5V, ±500mV, ±250mV, and ±125mV PGA Input Voltage Ranges
    • +24V Field Supply for Current Loop
    • Optional External Reference for ADC and/or DAC
    • Six GPIOs
    • 20MHz SPI Interface
  • Robust
    • ±36V Protection on All Analog I/O Ports
    • Overcurrrent Protection
    • Thermal Shutdown
    • Undervoltage Interrupt on All High Voltage Supplies
    • CRC Detection
    • Open Detection on All Analog Inputs
    • 2kV HBM Protection on All Pins
  • -40°C to +125°C Operating Temperature Range
  • Small 9mm x 9.5mm 64-Pin LGA Package

Applications/Uses

  • Distributed Control Systems
  • Process Control
  • Programmable Logic Controllers (PLC)
  • Programmable Automation Controllers (PAC)

Description

The MAX22000 is an industrial-grade configurable analog input/output device that can be configured on-the-fly in software as a voltage input or output, or current input or output. Additional inputs are available to measure other analog signals.

The device offers an 18-bit DAC with fast settling time as well as a 24-bit delta-sigma ADC. The ADC and DAC can individually choose between an internal or an external reference.

The MAX22000 supports the ADC with a low-noise programmable gain amplifier (PGA), with high-voltage and low-voltage input ranges to support RTD and thermocouple measurements. Additional auxiliary inputs are provided to measure cold junction temperatures on-board.

The MAX22000 communicates through a high speed 20MHz SPI bus for all configuration and management information as well as for conversion results. An optional 8-bit CRC enhances the reliability of the SPI interface, protecting against all 8-bit bursts as well as all double-bit errors.

The MAX22000 operates from 2.7V to 3.6V analog and digital supplies and up to ±24V high-voltage supplies. The device is available in a 64-pin LGA package and operates over the -40°C to +125°C industrial temperature range.

Simplified Block Diagram

MAX22000: Functional Block Diagram MAX22000: Functional Block Diagram Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal