The TBSAB02 is a 4+1 channel analog to SDI-12 interface for 24 Bit A/D conversion of sensor signals. A/D conversion and configuration is controlled via SDI-12 commands. The interface is equipped with signal conditioning circuits which can be customized for various input voltage ranges. It offers low current consumption and comes in a Din Rail housing. Each channel can be independently scaled with a 3rd order polynomial to enable gain and offset calibration of the connected sensors. A built in 3 wire interface for direct connection of PT100/PT1000 offers additional versatility. The TBSAB02 provides digital signals for the power management of the connected sensors. Four on board, SDI-12 controlled high side FET- switches are provided to power on/off connected sensors.

Specifications

• ANALOG to SDI-12 Interface

• 4+1 24 Bit Sigma Delta ADC channels

• 4 analog inputs; configurable as 4-20mA current loop or 0-2,5V voltage inputs; other voltage ranges upon order

• Input over-voltage protection

• 3-wire PT100/1000 interface

• Configurable sensor power management signal for each channel

• Configurable slope and offset for each channel

• ±0,025%, 2ppm/°C reference voltage

• Chopper stabilized buffer for low offset

• 50Hz & 60Hz line rejection filter

• SDI - 12 Standard V1.3

• Plug and Play

• 6 - 16V supply voltage

• Din Rail housing

• Operating Temperature Range:

• - 40°C … + 85°C

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