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MAX22005 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX22005 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 47 page  General Description The MAX22005 is a twelve-channel industrial-grade ana- log input voltage-mode device that can also be configured as analog-input current-mode device using an external precision resistor per channel. It can also operate as con- figurable analog-input using an external precision resistor and low-cost switch per channel. Input channels can be used as twelve single-ended inputs, or six differential in- puts, or up to eight multichannel configurable differential inputs. In total, the device supports up to 26 different con- figurations. The MAX22005 features an integrated 24-bit delta-sigma ADC that is shared between all channels. The ADC can be used with either an integrated 5ppm/°C precision refer- ence or an external reference. Standard industrial analog input voltage ranges are converted to the ADC input volt- age range using high-voltage, zero-drift input amplifiers. All input ports are robustly protected up to ±36V reverse polarity and ±2kV surge pulses without the need of TVS diodes. Eight general-purpose digital I/O (GPIO) ports are avail- able for common use, or they can be used to control ex- ternal switches for configurable inputs. The MAX22005 is factory calibrated with best-in-class sys- tem performance of less than 0.05% FSR Total-Unadjust- ed-Error (TUE) over temperature. The host communicates with the MAX22005 through a high-speed 30MHz SPI bus for all configurations and infor- mation management, as well as for acquiring 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 MAX22005 operates from 2.7V to 3.6V analog and digital supplies, and up to ±24V high-voltage supplies. The MAX22005 is available in 48-pin LGA package and operates over the -40°C to +125°C industrial temperature range. Applications ● Programmable Logic Controllers (PLC) ● Programmable Automation Controllers (PAC) ● Distributed Control Systems (DCS) Benefits and Features ● Enables More Robust and Reliable Systems • ±36V High-Voltage Protection for All Input Ports • 2kV HBM ESD Protection of All Pins • ±2kV Surge Protection (with External 5kΩ Resistor) • CRC Detection for Robust Serial Communication • Watchdog Timer ● Software Configurability • ±12.5V Analog Input-Voltage Mode • ±25mA Analog Input-Current Mode Using External Sense Resistor • Configurable Inputs Using External Sense Resistor and Low-Cost Switches ● Best-in-Class System Accuracy • 0.02% FSR at 25°C Factory Calibrated • 0.05% FSR over ±50°C from 25°C Factory Calibration • Maximum of 30nA Input Leakage • 5ppm/°C Internal Reference ● Additional Features • Internal or External ADC Reference • Eight GPIO Ports • 48.5mW Low Power Dissipation with ±5V Supply • 30MHz SPI/QSPI/DSP-Compatible Serial Interface ● Operating Temperature -40°C to +125°C ● 7.5mm × 7mm 48-pin LGA package Ordering Information appear at end of datasheet. Click here to ask about the production status of specific part numbers. MAX22005 12-Channel Factory-Calibrated Configurable Industrial-Analog Input EVALUATION KIT AVAILABLE 19-101026; Rev 0; 4/21 |
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