MAXREFDES174#: IO-Link distance sensor

The MAXREFDES174# is an IO-Link^®-compliant, distance sensor reference design that uses the Maxim MAX22513 IO-Link device transceiver and supports the IQ² Development IO-Link stack.

3.3V 1A, low EMI, 92% efficiency DC/DC module reference design in double-layer TO-220 package

TI reference design TIDA-00947 demonstrates a 10.5mmx14.5mm, 92% efficient low electromagnetic interference (EMI) DC/DC module using the TPS54202, replacing low dropout regulators (LDOs) in most appliance applications. High efficiency eliminates the need for a heat sink, resulting in a smaller, lower cost solution. Higher current capacity enables the addition of more functionality (WiFi, sensors, etc.). High efficiency and low current consumption help achieve stringent energy efficiency ratings.

Schematic PCB

MAXREFDES1160: Full-duplex, 500kbps and 2.75kVRMS isolated RS-485 module using the MAX14853

The MAXREFDES1160 is a 5V supplied, 2.75kV_RMS, full-duplex and 500kbps isolated RS-485 module using the MAX14853. This reference design demonstrates how to build an isolated RS-485 module with a low-cost transformer to provide isolated power. A transformer from HanRun, the HR600755, is used in this design. The power supply on the reference design is derived from a single 5V source. Connect the design board to a USB port or connect an external supply from VDDA to GNDA to provide 5V power supply on the logic side (A). The integrated push-pull transformer driver and external transformer (TX1) generate an isolated supply for powering the isolated side (B) of the board.

PC-Based Oscilloscope Reference Design

This article presents a reference design for a PC-based oscilloscope. The MAX1393 ADC and MAX1396 EV (evaluation) kit are featured. Schematics, software, and explanation of software functions are all provided.

OM13488: Universal 8-bit general-purpose IO daughter board for Fm+ development board

Universal 8-bit general-purpose IO daughter board for Fm+ development board

WCT-15W1COILTX: 15 W single coil wireless charging transmitter reference design

WCT-15W1COILTX is an NXP15 W single coil wireless charging transmitter reference platform for the MWCT1012CFM transmitter controller IC.

Signal conditioning in industrial multi-channel data acquisition systems using Σ-Δ ADCs

This application note will help the designer of a high-performance, multichannel data acquisition system (DAS) configure the proper interface between industrial sensors and high-performance ADCs. The example used is a power-grid monitoring system. The article explains advantages of the MAX11040K ADC's sigma-delta architecture, and how to select the proper schematic and components to achieve optimum system performance.

MAXREFDES1158: 2.75kVRMS isolated 500kbps half-duplex RS-485 transceiver using MAX14946

The MAXREFDES1158 is a 5V supplied, 2.75kV_RMS isolated, 500kbps, RS-485 module using the MAX14946. This reference design demonstrates how to build an isolated RS-485 module with a low-cost transformer to provide isolated power.

MAXREFDES165# Quad Channel IO-Link Master

The MAXREFDES165# is a fully IO-Link®-compliant, 4-port IO-Link master reference design. This design uses TMG TE’s IO-Link master stack and is both an IO-Link master reference design as well as an IO-Link sensor/actuator development and test system. Four IO-Link ports allow for simultaneous testing of up to four different sensors (or actuators).

Support high-gain applications using rejustors and precision instrumentation amplifiers

This article shows how to use a zero-drift, precision, instrumentation amplifier with a pair of rejustors (passive electrically-adjustable resistors) and gain-setting resistors to ensure high accuracy. The MAX4208 precision instrumentation amplifier serves as the example device. Experiments are described and test results presented.

Using negative voltage charge pumps and analog switches to build DirectDrive video filter amplifiers in audio/video applications

The MAX9503/MAX9505 DirectDrive™ video filter amplifiers integrate an analog switch (MAX9505 only) and a negative charge pump that can be used to improve performance for audio/video applications.

Verification and implementation of I²C bus

This application note briefly reviews the history of the I2C bus. It then presents I2C configurations proven to ensure easy communication between the master and slaves on the bus. Examples include schematics and code. Appendix 1 contains helpful definitions of terms used in this article.

Use a simple voltage regulator circuit to provide a constant voltage to a high-side current monitor

In a typical photodiode current-monitoring application, the voltage drop between the current monitor and the avalanche photodiode (APD) varies with the temperature and current flowing through it, thereby changing the overall gain. This application note describes a regulator circuit that solves this problem by maintaining a constant voltage drop across the current monitor and APD.

Modern PRTD temperature sensors and high-resolution delta-sigma ADC enable high-precision temperature measurement over a wide range

Many modern industrial, medical, and commercial applications require temperature measurements in the extended temperature range with accuracies of ±0.3°C or better, performed with reasonable cost and often with low power consumption. This article explains how platinum resistance temperature detectors (PRTDs) can perform measurements over wide temperature ranges of -200°C to +850°C, with absolute accuracy and repeatability better than ±0.3°C, when used with modern processors capable of resolving nonlinear mathematical equation quickly and cost effectively. This article is the second installment of a series on PRTDs. For the first installment, please read application note 4875, "High-Accuracy Temperature Measurements Call for Platinum Resistance Temperature Detectors (PRTDs) and Precision Delta-Sigma ADCs."

RDIMX6SABREPLAT: i.MX 6 Series-based SABRE platform for smart devices

NXPThe SABER platform enables you to evaluate the multimedia performance of ARM® Cortex®-A9-based i.MX 6 series processors.

USB-C "switch", hardware open source, firmware provided

The basic functions of USB-C are supported, such as high-speed communication and charging functions. Then this design solves the problem of painless switching between one host and multiple devices, or one device and multiple hosts.

Schematic PCB

MSC8157ADS: MSC8157 application development system

High-performance temperature measurement using thermocouples and precision delta-sigma ADCs, Part 2

Many industrial and medical applications require temperature measurements with accuracies of ±1°C or better, performed with reasonable cost over a wide range of temperatures (-270°C to +1750°C) and often with low power consumption. This article describes design of the cost-efficient, portable, high-resolution data-acquisition systems (DAS) based on precision delta-sigma analog-to-digital converters (ADCs). It also presents formulas and software for implementation of standardized linearization calculation algorithms to accurately cover this wide temperature range while ensuring reproducible measurements.

PTN5150A-PTN36043 USB Type-C CC Logic Evaluation Kit

Schematic PCB

Simplifying lithium-ion (Li+) battery charger testing

Because the charging process for Li+ batteries can take an hour or longer, testing a Li+ battery charger using its natural load (i.e., a battery) is time consuming and inconvenient. This application note presents a simple circuit for simulating the behavior of a Li+ battery, thus providing a more convenient method for testing Li+ battery chargers than using real batteries.