Sensors and Field Instruments


An abundance of remote sensors are connected to the industrial control management infrastructure. These sensors collect and communicate process and environmental information back to the automation controllers. Within the wide range of sensor types used, the most common are temperature, pressure, and vibration. Standard outputs used for communications include analog voltage or current, smart digital, and digital on/off (in the case of threshold sensors).

Field instruments are handheld devices that are frequently used to maintain, repair, and calibrate remote sensors. These devices are typically battery powered and require precise sensor interface electronics.



Applications


Temperature Sensing

We provides silicon-based temperature sensors, single-chip resistance temperature detectors (RTDs), and thermocouple interface ICs.

Temperature Sensors
RTD and Thermocouple Interface ICs

Pressure Sensing

Our wide range of analog input signal chain solutions are ideal for use in pressure and force-sense applications. Explore common signal chain solutions for pressure sensing applications.

Pressure Sensors Signal Chain Solutions


Featured Products


24-Bit, Low Power, Low Noise, Delta-Sigma ADC with Integrated PGA

MAX11270

The MAX11270 is a 24-bit delta-sigma ADC that achieves excellent 130dB SNR while dissipating an ultra-low 10mW. Sample rates up to 64ksps allow both precision DC and AC measurements. Integral non-linearity is guaranteed to 4ppm maximum.

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RTD-to-Digital Temperature Sensor Interface

MAX31865

Provides 0.5°C total accuracy with fault detection and ±45V input protection

4V to 42V, 100mA, Compact Step-Down Power Module

MAXM17532

The MAXM17532 is a step-down DC-DC power module built in a compact uSLICTM package. The MAXM17532 integrates a controller, MOSFETs, an inductor, as well as the compensation components. The device operates from an input voltage of 4.0V to 42V, supports an adjustable output voltage from 0.9V to 5.5V, and supplies up to 100mA of load current. The high level of integration significantly reduces design complexity, manufacturing risks and offers a true “plug and play” power supply solution, hence reducing the time-to-market.

Evaluation Kit for 4.5V to 42V, 300mA uSLIC Power Module for 3.3V Output

MAXM15462EVKIT

Integrated power solution providing 3.3V from a wide input range of 4.5V to 42V with up to 300mA of current.

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Ultra-Accurate Local Temperature Sensor

MAX31726

This IC converts the temperature measurements to digital form using a high-resolution, sigma-delta, analog-to-digital converter (ADC). Accuracy is ±0.5°C from -40°C to +105°C. Communication is through an I2C-compatible 2-wire serial interface.

Low-Power, Low-Noise Multichannel Sensor Signal Processor

MAX1464

A highly integrated, low-power, low-noise multichannel sensor signal processor optimized for process-control applications such as pressure sensing and compensation, RTD and thermocouple linearization, weight sensing and classification, and remote process monitoring with limit indication.


Solutions


The following solutions offer in-depth design information for building an analog signal chain which bring microvolt-through-millivolt analog sensor signals into the digital domain.

Temperature Sensor solutions provide design information, featured products, and block diagrams for temperature-sensor related products.

Pressure Sensor solutions provide design information, featured products, and block diagrams for force and pressure-sensing products.

Functional solutions provide design information for analog input/output, and sensor functional solutions.

Resources

Type ID Title
Type ID PDF Title
Tutorial 4679 Thermal Management Handbook


Analog Measurement for Low Power, Low Noise Sensors
2:56 min
November 2014