General Analog Input

These complete analog input solutions match a wide range of mass market analog input applications. The selected ICs meet the performance requirements of the solution description and are our most cost-effective and most highly recommended products for the application. Please browse the list of solutions and click on a block to view recommended products.

Detailed circuit design information for professional layout, and component placement best practices can be found in our Analog Input Reference Designs.

12-Bit Bipolar mV Input for Battery-Powered Instruments


Ref Isolation OA ADC

This signal chain processes bipolar signals (those with positive and negative components) featuring a cost-effective precision amplifier available in single/dual/quad configurations. The multichannel SAR ADC provides up to 500Ksps and provides low-power operation including an autoshutdown fast wake feature. The reference provides 3ppm accuracy over a wide temperature range. All components are low power and designed for use in battery-driven applications.

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12-Bit Single-Sided mV Input for Battery-Powered Instruments


Ref Isolation ADC OA OA

This signal chain processes single-sided, mV level signals, such as those received from typical analog output sensors. It features a cost-effective precision amplifier available in single/dual/quad configurations. The multichannel SAR ADC provides up to 500Ksps and provides low-power operation, including an autoshutdown fast wake feature. The reference provides 3ppm accuracy over a wide temperature range. All components are low power and designed for use in battery-driven applications.

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10 and 12-Bit mV Limited Range Multichannel Analog Input


Ref Isolation ADC OA OA

Applications, including medical and consumer, that use multiple internal sensors and operate over limited temperature or pressure ranges, need a multichannel, limited quantization solution with high precision and accuracy. This 10 or 12-bit multichannel solution, with a sampling rate of about 100k SPS, is perfect for these applications. Select between 10 and 12 based on quantization requirements. Use the internal reference if it meets your temperature stability requirements.

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Midrange 12 and 14-Bit ±10V Multichannel Analog Input


Ref Isolation ADC OA OA

This is a multichannel solution for flexible and highly accurate applications, such as industrial control. This solution offers input flexibility, medium rate sampling speed, and low power. Typical uses include midrange PLC analog input and data logging. See PLC solutions for more information.

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16-Bit mV Input for Battery-Powered Instruments


Ref Isolation OA ADC

Applications like instrument and sensor calibration require higher precision than most others and this signal chain is perfect for those applications. This signal chain features a cost-effective precision amplifier (choose bipolar or single-sided) that provides the needed performance to drive a 16-bit ADC. The ADCs are low-power, sigma-delta ADCs with very low INL. The reference provides 3ppm accuracy over a wide temperature range. All components are low power and designed for use in battery-driven applications.

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16-Bit Multichannel, Multirange Integrated Analog In


Ref Isolation ADC

Applications that process multiple analog inputs that are of different types, for example mV on one channel and 10V on another, need a flexible input structure. This solution offers programmable input levels and is a highly integrated, single-chip design for applications that are space constrained, including avionics and robotics. An optional external reference can be added to meet more stringent temperature stability requirements.

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16-Bit mV Differential Input for Battery-Powered Instruments


Ref Isolation OA ADC

Applications that take input from Wheatstone bridge type sensors (or from any other differential signal source) require a differential input. This signal chain provides 16-bit ADCs that feature low power operation, internal PGA, and input noise filtering. The op-amps are optional depending on the need for additional amplification. The reference provides 3ppm accuracy over a wide temperature range. All components are low power and are designed for use in battery-driven applications.

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Wide Range 16-Bit ±10V Integrated Analog Input


Ref Isolation ADC

PLC applications frequently require analog inputs that are flexible enough to provide precision over a wide range—from ±10V inputs to differential mV level inputs. This signal chain works well for this application. See PLC solutions for more information.

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16-Bit Simultaneous Sampling Differential Analog In


Ref Isolation ADC OA OA

Simultaneous sampling is required when the inputs must be sampled at exactly the same time. This circuit provides four fully differential, simultaneously sampled channels. Simultaneous sampling is typically found in power measurement applications.

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General Purpose 24-Bit ±10V Integrated Analog Input


Ref Isolation OA ADC

General purpose circuits can satisfy many needs. They are flexible in that they can be used both where over-specified and in applications with the most demanding specs. This 24-bit analog input circuit is cost-effective, handles mV–volt level signals and feature low-power usage. This versatile input signal chain can be used for battery-powered instruments, industrial control devices, and robotics.

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Integrated 24-Bit Differential mV Input for battery-operated Applications


Ref Isolation ADC

This highly integrated 24-bit analog input circuit provides differential mV analog inputs using an ADC with integrated programmable gain amplifier and integrated reference. This signal chain is very low power and appropriate for use in battery-operated applications. Select a single or multichannel ADC. This circuit is typically used in strain gauge applications.

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