Field Instruments
Welcome to the frontlines of Industry 4.0. Field instruments combine sensors, actuators, intelligent signal processing, and robust communications while often operating in the harshest of environments. They are required to capture and interpret data that is communicated to the cloud at the enterprise level. It is there that algorithms and analytics turn this data into insights and actions. But the understanding realized in the cloud is only as good as the data captured at the node, so quality matters. Today’s legacy 4-20ma field Instruments have inherent power constraints that can limit the ability to meet Industry 4.0 demands for increasing edge intelligence, safety, and security. ADI is bringing innovative power solutions, advanced sensing capability, precision measurement, safety through diagnostics, and more intelligence to front-line sensing and control within automation.
Interactive Signal Chains

Featured Products
CN0352
Features & Benefits
- Expandable 8-Channel Lithium Ion Battery Tester
- Integrated Fast Charging/Discharging Battery Management
- Precision Analog Microcontroller for Data Acquisition and Control
CN0338
Features & Benefits
- Gas sensor based on NDIR
- Optimized for CO2
- Arduino shield form factor for rapid prototyping
CN0376
Features & Benefits
- Highly Integrated Two-Channel Isolated PLC/DCS Input
- Thermocouple/RTD Inputs
- Signal and Power Isolation
- Low Power, Small Size
CN0384
Features & Benefits
- Highly Integrated Thermocouple Measurement System
- 24-bit Resolution
- Accuracy: <1°C
- Low Power
- Accuracy: <1°C over temperature
CN0383
Features & Benefits
- Highly Integrated 3-Wire RTD Measurement System
- 24-bit Resolution
- Accuracy: <1°C
- Low Power
- Accuracy: <1°C over temperature
CN0381
Features & Benefits
- Highly Integrated 4-Wire RTD Measurement System
- 24-bit Resolution
- Accuracy: <1°C
- Low Power
- Accuracy: <1°C over temperature
CN0269
Features & Benefits
- 18-Bit, 16-Channel Data Acquisition
- 16 single-ended, 8 differential inputs
- 1.33MSPS sampling rate
- 250kHz channel switching rate
CN0310
Features & Benefits
- 24-bit, 250kSPS ADC System
- Industrial Signal Levels
- Single Supply
CN0364
Features & Benefits
- Quad Channel Voltage and Current Inputs
- Fully Isolated
- HART Compatibility
Parts used
CN0359
Features & Benefits
- Automatic Conductivity Measurement System
- Self Contained
- Microprocessor Controlled
- Temperature Compensated
Parts used
CN0298
Features & Benefits
- Complete Anemometer Signal Conditioning
- Wireless ISM Transceiver
- On-Chip Microcontroller
Parts used
CN0271
Features & Benefits
- Typical temperature range of -200 C to +1200 C
- K-type thermocouple measurement system
- 16-bit ADC, Low temperature drift
- Integrated cold junction compensation
CN0172
Features & Benefits
- 3 channel K-type thermocouple measurement system
- Typical temperature range of -200 C to +1200 C
- Highly accurate temperature measurement to 0.25 degrees
- 16-bit digital temperature sensor used for cold junction compensation
CN0319
Features & Benefits
- 4-20mA thermocouple temperature monitor
- Cold junction compensation
- Loop powered
CN0300
Features & Benefits
- T-type thermocouple measurement system, to loop powered 4-20mA output
- Typical temperature range of -200 C to +400 C
- Single chip solution using a Cortex processing core
- Cold junction compensation
CN0287
Features & Benefits
- 4-Channel Thermocouple/RTD Measurements
- Fully Isolated
- Input Protection
CN0336
Features & Benefits
- 4-20mA receiver
- Single Supply
- Fully Isolated
CN0337
Features & Benefits
- Flexible RTD Conditioning and Conversion
- Temperature Compensated
- Fully Isolated
CN0348
Features & Benefits
- 16-Bit Precision DAC
- Low power (<25mW)
- Single supply
- Less than +/-1LSB INL and DNL
CN0335
Features & Benefits
- Industrial Level Signal Conditioning
- Single Supply
- Fully Isolated
CN0185
Features & Benefits
- Analog to analog isolation
- Provides both signal and power isolation
CN0326
Features & Benefits
- 0.5% Accuracy
- Low power
- Temperature compensation
- Completely isolated
CN0302
Features & Benefits
- Up to 13GHz RF output PLL
- 5μs settling time for 200MHz frequency jump
CN0314
Features & Benefits
- 4-20mA Transmitter/Receiver
- Loop Powered
- Configurable
CN0234
Features & Benefits
- Complete electrochemical sensor
- Low power
- Single supply
CN0229
Features & Benefits
- Quad channel Current and Voltage Outputs
- 16-bit Resolution for PLC Systems
- Digitally Isolated from Application
Parts used
CN0254
Features & Benefits
- Precision conversion up to 8 channels
- Digital and power galvanic isolation
- Small board area
CN0240
Features & Benefits
- +/- 270 V common mode voltage
- Creates isolated supply for digital control
- 1% accuracy, bidirectional current monitor system
- Galvanic isolation protects processor
CN0203
Features & Benefits
- Programmable analog output
- 16 bit resolution
- .1% error with no missing codes
- Ideal for PLC output modules
CN0218
Features & Benefits
- 0 to 500 V common mode voltage
- Single supply voltage
- Galvanic isolation protects processor
- Creates isolated supply for digital control
- Unidirectional current monitor system
CN0209
Features & Benefits
- Complete Analog front end for Process Control
- Inputs include RTD, thermocouple, 4-20 mA, +/- 10V
- Easily switch between the various input types
CN0216
Features & Benefits
- High gain of 400 using zero drift amps
- Typical connection to weigh scales with low output signals
- Performance metrics maintained through 120 Hz
- Precision weigh scale application circuit
- Low power and low noise
CN0196
Features & Benefits
- High power MOSFETS
- Galvantic isolation between control and power
- H-bridge driving circuit
CN0213
CN0204
Features & Benefits
- High voltage, up to 44V
- Programmable analog output
- Galvanic isolation from rest of system
- Ideal for PLC and DCS modules
CN0188
Features & Benefits
- 0 to -48 V common mode voltage
- System accuracy better than 1%
- Single system supply voltage
- Galvanic isolation protects processor
- Unidirectional current monitor system
CN0233
Features & Benefits
- 16-bit Industrial Output DAC
- Isolate Power and Signals
- Compatible with ±10V and 4-20mA Control Systems
CN0202
Features & Benefits
- Programmable analog output
- Industrial current and voltage output driver
- Ultralow noise and low temperature drift
CN0180
Features & Benefits
- Industrial input voltage levels up to ±10V
- Singled ended to differential interface to 18-bit SAR converter
- Low power, total less than 22 mW
- Single supply 5V rail
CN0197
Features & Benefits
- Measure up to 48 Li-Ion battery cells
- Battery cell balancing for load sharing
- Galvanic isolation protects processor
- Lithium battery management system
cn0181
Features & Benefits
- True 16 bit voltage output DAC w/buffer
- Small footprint saves board space and lowers cost
- Low power consumption
CN0031
CN0281
Features & Benefits
- Thermocouple sensor with cold junction compensation
- Automotive SENT interface
CN0321
Features & Benefits
- Voltage and 4mA to 20mA output
- Fully isolated
- HART connectivity
CN0325
Features & Benefits
- PLC/DCS universal input module
- 4-pin or 6-pin terminal block
- Fully isolated
- 16-bit sigma-delta ADC
CN0318
Features & Benefits
- Bipolar ±10V dc voltage source
- 16-bit resolution
- Low noise
CN0289
Features & Benefits
- Loop powered 4-20mA transmitter
- Voltage or current drive
- Optimized for pressure sensors
CN0295
Features & Benefits
- 4-20mA transmitter
- Voltage or current drive
- Optimized for pressure sensors
- Low Power
CN0157
Features & Benefits
- 24 bit, 4 channel simultaneous sampling system
- High dynamic range with high crosstalk isolation
- Daisy chain configuration minimizes digital lines to host
CN0221
Features & Benefits
- Typical temperature range of -200 C to +400 C
- Precision Cortex M3 analog microcontroller with 24-bit sigma-delta ADC
- T-type thermocouple measurement system with cold junction compensation
- Single chip solution
CN0273
Features & Benefits
- FET input instrumentation amplifier
- High bandwidth
- Small PCB footprint
CN0143
Features & Benefits
- Single ended to differential conversion
- Noise and common mode error cancellations
- Rail to rail output using a single supply
cn0156
CN0145
Features & Benefits
- Temperature monitoring solution
- Interfaces with 4-20 mA controller
- 24 bit precision conversion with integrated processor
CN0328
Features & Benefits
- Complete HART compliant solution for 4mA to 20mA or voltage output
- Fully Isolated
- Four multiplexed outputs
CN0292
Parts used
CN0390
Features & Benefits
- 20GHz to 37.5GHz RF Automatic Gain Control
- Wide input amplitude range
- Low phase noise
Parts used
CN0391
Features & Benefits
- Flexible 4-channel thermocouple system
- Cold junction compensation
- 24-bit digitization
- Low power
- Arduino-compatible form factor
CN0394
Features & Benefits
- Flexible 4-channel thermocouple system
- Cold junction compensation
- Arduino-compatible interface to ADICUP360
Parts used
CN0385
Features & Benefits
- Multichannel Isolated Data Acquisition System
- Industrial Signal Levels
- 18-bit, 2MSPS Conversion
- 750kHz Channel Switching Rate
Parts used
CN0277
Features & Benefits
- 18-bit, 5MSPS Data Acquisition
- Low Power
- LVDS Outputs
CN0398
Features & Benefits
- Complete Soil Moisture, pH, and Temperature Measurement
- Low Power
- Arduino-Compatible Form Factor
CN0206
Features & Benefits
- Typical temperature range of -200 C to +400 C
- T-type thermocouple measurement system
- Low power 500uA max, and low system noise of 0.2 degrees
- Single chip solution with programmable gain and cold junction compensation
- High performance and accuracy
CN0306
Features & Benefits
- 16-bit 100kSPS SAR ADC system
- Optimum low power drive amplifier
- Input signals up to 1kHz
CN0411
Circuit Diagram
Photo
Features & Benefits
- Measures TDS using Electrical Conductivity
- Measurement range from 1uS to 1S
- Uses Standard BNC Probe Connection
- Arduino Form Factor Compatible
CN0255
Features & Benefits
- 16-bit, 100KSPS Data Acquisiton
- Single Supply
- 8mW Total Power
CN0169
Features & Benefits
- True 16 bit programmable voltage output
- INL and DNL both better than 1 LSB
- Small footprint and low cost
CN0272
Features & Benefits
- High speed photodiode signal conditioning circuit
- 91dB dynamic range and circuit consumes only 40 mA
- Dark current compensation
- Spectral range from 400 nm to 1050 nm
- Well suited for portable high speed applications
CN0307
Features & Benefits
- 16-bit 6MSPS SAR ADC system
- Low power driver
- Ideal for multiplexed data acquisition
CN0345
Features & Benefits
- 18-Bit 8-Channel Data Acquisition System
- Single-ended and differential industrial signal levels
- 750 kSPS per channel switching rate
- 240mW at maximum sampling rate
CN0396
Features & Benefits
- Dual electrochemical gas sensor
- Temperature compensation
- 16-bit digitization
CN0407
Features & Benefits
- Femtoampere measurements
- Electrometer grade input amplifier
- 20fA maximum input bias current @ 85°C
- 24-bit sigma delta ADC
CN0251
Features & Benefits
- 4-channel wide dynamic range
- Industrial signal levels
- In-amp input stage for high CMR
CN0270
Features & Benefits
- Complete HART compliant solution
- 4mA to 20mA
- Lowest power in industry