SANTA FE (MAXREFDES5#): 16-bit, high-precision, multiple-input, isolated analog front end (AFE)

This document explains how the Santa Fe (MAXREFDES5#) subsystem reference design meets the higher resolution, higher voltage, and isolation needs of industrial control and industrial automation applications. Hardware and firmware design files as well as FFTs and histograms from lab measurements are provided.

Schematic PCB

MAXREFDES75# 24-bit electronic scale with 16-bit DAC, 0 to 10V output

The MAXREFDES75# is a high-resolution weigh scale reference design with a 0 to 10V output. The design, or strain-gauge measuring system, includes the MAX11270, a 24-bit, 64ksps, delta-sigma analog-to-digital converter ( ADC), and the MAX542, a 16-bit, 1µs settling time, 2 LSB (max) INL digital-to-analog converter (DAC). The MAXREFDES75# operates as a stand-alone reference board and includes calibration using a USB and a Windows ^® PC.

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MAXREFDES74#: 18-bit high-precision data acquisition system

The MAXREFDES74# is a precision data acquisition system which includes an 18-bit, 500ksps, ±5V SAR analog-to-digital converter (ADC), the MAX11156, and an 18-bit, 3µs settling time, ±2 LSB (max) INL digital-to-analog converter (DAC), the MAX5318. The data acquisition system can be used as a stand-alone evaluation board or as a mezzanine card to ZedBoard™, a development board for the Xilinx ^® Zynq ^® -7000 All Programmable SoC.

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MAXREFDES73#: Wearable, galvanic skin response system

The MAXREFDES73# reference design is a wearable, mobile galvanic skin response system. Featuring the MAX32600 wellness measurement microcontroller, this battery-powered platform takes high-precision AC impedance measurements while consuming minimal power.

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VGA 8:1 Multiplexer Reference Design Using the MAX4885

This reference design (RD) features a fully assembled and tested surface-mount printed circuit board (PCB). The RD board utilizes the MAX4885 1:2 or 2:1 multiplexer and other ICs to implement a complete video graphics array (VGA) 8:1 multiplexer. VGA input/output connections are provided to easily interface the MAX4885 RD board with VGA-compatible devices. The RD board gives the option to use a single 5V DC power supply (V+), or this RD board can be powered from any one of the eight VGA sources.

MAXREFDES36#: 16-channel IO-LINK digital input hub

Maxim's MAXREFDES36# reference design is an IO-Link, low-power, 16-channel digital input hub compliant with IEC 61131-9. It contains two octal digital input serializers, an IO-Link transceiver and efficient step-down converter. The entire design fits in a standard DIN rail printed circuit board (PCB) holder.

Schematic PCB

MAXREFDES46#: 4-channel analog input/output

The MAXREFDES46# subsystem reference design meets the needs of modern factory control nodes by featuring four, dense, highly accurate analog inputs and outputs in a compact, galvanically isolated form factor. Analog input channels measure current or voltage and analog output channels provide current or voltage . This design uniquely fits programmable logic controllers (PLC), distributed control systems (DCS), and other industrial applications. Hardware and firmware design files and lab measurements are provided for rapid prototyping and development. The board is also available for purchase.

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MAXREFDES1152: Quad general-purpose analog input based on the MAX11270

The MAXREFDES1152 is a four-channel universal analog input that measures voltage or current signals. Each channel can be configured for voltage input at 0 to 10V or current input at 0 to 20mA. A 24V power supply can be switched out to power an external 2 -Wire, 3-Wire, or 4-Wire sensor.

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MONTEREY (MAXREFDES15#): Ultra-low power, high accuracy, 4–20mA, 2-wire current loop sensor

The Monterey (MAXREFDES15#) subsystem reference design is a high-accuracy industrial loop powered sensor transmitter that connects to any standard PT1000 resistance sensor and converts the linearized temperature to a 4–20mA current signal, which is immune to noise and remains constant over long distances.

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Tesla Roadster open source design data (battery monitoring board, vehicle display system, HVAC controller, diagnostic software)

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Laptop VGA signal switching reference design

This application shows how the MAX4885E low-capacitance VGA switch can be used to perform the switching function in a laptop computer. The MAX4885E draws nearly zero current, fits into a 4mm x 4mm package, and incorporates most of the switches and active components used in a discrete implementation. All device outputs are protected to ±15kV Human Body Model (HBM) so that the designer can eliminate many ESD components, thereby reducing cost and saving board space. An application circuit shows the MAX4885E used for VGA signal switching between a laptop and docking station.

MAXREFDES60#: 16-bit analog output micro PLC

The MAXREFDES61# reference design ushers in the era of Industry 4.0. With a complete analog front-end for the next generation of ultra-small programmable logic controllers, this design meets the higher resolution and higher voltage needs of industrial control and industrial automation applications, while consuming minimal power and space. This high-performance system features four channels of analog input, a complete, efficient power-supply system and on-board processing. Hardware and firmware design files as well as FFTs and histograms from lab measurements are provided.

Schematic PCB

MAXREFDES82#: Intelligent pressure sensor

The MAXREFDES82# reference design is an industrial, smart force sensor. Four load cells mounted on a quadrant plane are channeled to a multi-channel 24-bit ADC and the conversion results are computed to indicate the force magnitude, position and movement on a flat cover.

Schematic PCB

Campbell (MAXREFDES4#): 16-bit, high-accuracy 4-20mA input isolated analog front end (AFE)

This document explains how the Campbell (MAXREFDES4#) subsystem reference design meets the higher resolution and isolation needs of industrial control and industrial automation applications. Hardware and firmware design files as well as FFTs and histograms from lab measurements are provided.

Schematic PCB

Car emergency braking flashing device

In traffic accidents, rear-end collisions occur frequently due to sudden braking of the vehicle in front. Rear-end collisions are usually caused by failure to maintain a sufficient safe distance and the brakes cannot stop the vehicle. The time from when you discover an emergency ahead to when you apply the brakes is called reaction time. The length of reaction time directly affects the length of the braking distance. Especially when driving at high speed, a serious traffic accident will occur within one second. The long reaction time does not mean that the driver is slow to react, but that he does not know whether the car in front is applying the brake lightly or hard. When he finds out, two seconds have passed, and it is very likely that he will not be able to brake. If the vehicle in front The brake lights with flashing function are different. When you see the brake lights flashing, you must be stepping on the brakes harder. At this time, you should also step on the brakes harder, and the reaction time will be shortened. Therefore, in addition to letting the car behind you know whether to apply the brake lightly or hard, the flashing brake light is also particularly eye-catching and can remind the car behind you in time.

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Altitude pressure experiment design board

DEMOAPEXSENSOR is an experimental demonstration board dedicated to pressure sensors for various applications.

FREMONT (MAXREFDES6#): 16-bit, high-precision, 0 to 100mV input, isolated analog front end (AFE)

The Fremont (MAXREFDES6#) subsystem reference design meets the high-resolution needs of low-voltage output sensor applications. Boards for purchase, hardware and firmware design files, and FFTs and histograms from lab measurements provide complete system information for rapid prototyping and development.

Schematic PCB

MAXREFDES77#: Dual-channel current sensing peripheral module

This reference design demonstrates the performance of the MAX44285 dual-channel, high-precision, high-voltage, current-sense amplifier. It is a Pmod module that contains all the necessary circuitry required for the design of a current and temperature monitoring system.

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Open Source SCPI Programmable Precision Resistor Meter

A programmable resistor is an electronic device whose resistance can be adjusted, usually through a digital signal. Programmable resistors come in the form of integrated circuits (often called digital potentiometers) as well as stand-alone devices/expansion cards. There are many different applications, each with its own set of requirements.

​Range 1Ω - 999.999KΩ.

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Health sensor platform

Maxim health sensor (hSensor) platform helps customers evaluate Maxim's complex and innovative medical and high-end fitness solutions faster and easier. The hSensor platform supports the measurement of motion, precision skin temperature, biopotential measurements, and reflective photo plethysmography measurements, etc. The hSensor comes with a PC graphical user interface (GUI) application and Android application for customers to evaluate the sensors and other devices on the board. Hardware files and firmware source code provide complete documentation for the design. The board is also available for purchase.