Præcisions A/D-konvertere simplificerer udvikling af PLC-moduler
Analog Devices er klar med to nye multikanals +/-10V og 0-20mA præcision A/D-konvertere, der letter implementeringen af PLC (programmable logic controller) og DCS (distributed control system) moduler (in english).
Analog Devices (ADI) has introduced two multi-channel +/-10V and 0-20mA precision A/D converters that better enable implementation of programmable logic controller (PLC) and distributed control system (DCS) modules. Leveraging ADI’s iPassives integrated precision passives technology, the AD4111 and AD4112 A/D converters integrate precision matched current sense resistors and resistor dividers.The high degree of channel-to-channel matching simplifies calibration requirements, and with support for up to eight single-ended voltage inputs and four current inputs, makes the new products ideal for use as reconfigurable platform solutions, while reducing size, complexity and cost in PLC and DCS modules.
The devices offer an Absolute Maximum Rating of +/-50V on voltage pins and +/-50mA on current pins. The AD4111 uniquely enables open wire detection, to detect when an external sensor or signal source is disconnected from the system input, on +/-10V voltage inputs while operated from either a +5V or +3.3V single power supply.
When used in conjunction with the ADuM5411 quad-channel digital isolator, the AD4111 supports EMC/EMI standards IEC 61000-2, IEC 61000-3, IEC 61000-4, IEC 61000-5, IEC 61000-6, and CISPR 11.
View the product page, download the datasheet, order samples or evaluation boards here:
http://www.analog.com/AD4111 or
http://www.analog.com/AD4112
