Shown here are a few select products from TI’s overall precision analog portfolio targeted for PLC I/O modules. They address the key care-abouts of robustness, resolution, accuracy and programmability. The PGA280 is a zero drift programmable gain amplifier, with low offset voltage and very low noise which can tolerate inputs up to +/-15.5 V, with fully differential I/O and rail to rail outputs. In addition, it provides diagnostic features for detecting faults like wire breaks. High current buffers will allow it to handle dynamic overload from switching channels, a problem with typical analog switches. The ADS1259 is a 24-bit Delta-Sigma low power ADC with sample rates from 10 SPS to 14 kSPS. It has good INL in addition to low drift over temperature. It also has a 50/60 Hz sync filter to reject noise from the AC lines and an optional low drift on chip reference. Together with the PGA280, the ADS1259 forms an excellent choice to handle signals from low level transducers in the 10s of mV up to signals in the range of 10 V. The ADS1259EVM shown in the bottom left allows users to quickly evaluate both these products. Also shown is the ADS8331/2 which is a family of 4/8 channel 16 bit SAR ADCs with excellent INL and DNL performance. In addition these ADCs incorporate a mux so that all the signals can be conditioned by one ADC along with excellent AC performance. TI’s portfolio of precision analog amplifiers and data converters allows customers to tackle wide input ranges with high linearity and provide low noise, offset and drift through its advanced analog manufacturing processes. TI provides evaluation modules for nearly every device and spice and ibis models through the TINA simulaton tool. Visit the Analog eLAB site on www.ti.com to get free training, selection tools and reference designs.