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Posts Tagged ‘MAXIM integrated’

App note: Low-current charger provides battery backup from USB to 1-cell applications

Sunday, December 2nd, 2018

Another app note from Maxim Integrated on small current battery management. Link here (PDF) The circuit provides a 1-cell Li ion backup battery charger for low-current devices performing resistor limited current sharing

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App note: How to achieve greater accuracy in battery capacity readings for portable designs

Sunday, December 2nd, 2018

App note from Maxim Integrated on using fuel gauge IC to obtain accurate battery state of charge readings. Link here (PDF) Because a product’s runtime is limited by battery capacity, it’s critical to have a precise method for measuring the remaining battery capacity to avoid an unexpected shutdown. This application...

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App note: How to use LEDs with supervisory ICs for undervoltage and overvoltage fault indicators

Sunday, October 28th, 2018

Another app note from MAXIM Integrated utilizing supervisory chip and LEDs to indicate voltage faults. Link here Traditionally, supervisory ICs have been used to monitor voltage rails for undervoltage faults (UV). When a supply rail falls below a set threshold, the system is held in reset using the reset output...

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App note: How a SIMO PMIC enhances power efficiency for wearable IoT designs

Sunday, October 28th, 2018

App note from MAXIM Integrated on very compact PMIC using only single inductor to drive three independent switching regulators. Link here Small form factor and minimal power loss are key criteria for internet of things (IoT) hardware, particularly wearables. Meeting these criteria typically involves some tradeoffs. For example, to meet...

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App note: Challenge and Response with 1-Wire® SHA Devices

Sunday, September 23rd, 2018

Another app note from Maxim Integrated about challenge-response security on 1-wire devices. Link here (PDF) Challenge-response can be a secure way of protecting access to any privileged material if implemented correctly. In this document, many options for challenge-response access control are discussed but the most secure method given is presenting...

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App note: Extending I2C communication distance with the DS28E17

Sunday, September 23rd, 2018

App note from Maxim integrated about alternative method to extend I2C bus. Link here (PDF) Systems are increasingly requiring greater distances for I2C buses. This article explains how the DS28E17 can be used to extend the distance of I2C devices while decreasing cost.

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App note: Modern thermocouples and a high-resolution DeltaSigma ADC enable high-precision temperature measurement

Sunday, August 5th, 2018

Old app note from Maxim Integrated about high-precision temperature measurement. Link here (PDF) 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. Properly selected, standardized, modern...

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App note: Sterilization methods and their impact on medical devices containing electronics

Sunday, August 5th, 2018

App note from Maxim Integrated on electronic devices sterilization. Link here (PDF) Although there is considerable literature about sterilization methods and equipment, there is very little written about the impact of sterilization on electronics. This article compares popular sterilization methods and discusses their suitability for objects containing electronics.

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App note: Map colors of a CIE plot and color temperature using an RGB color sensor

Sunday, April 29th, 2018

An app note from MAXIM integrated on RGB color sensor and their capability to correct color deviation by providing feedback based on a reference color. Link here (PDF) This application note will show how all the colors within the color gamut formed by red, green, and blue constants in a...

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App note: Fundamentals of operation and recent developments of class D amplifiers

Sunday, April 8th, 2018

Good read about class D amplfiers from MAXIM Integrated. Link here (PDF) A Class D amplifier's high efficiency makes it ideal for portable and compact high-power applications. Traditional Class D amplifiers require an external lowpass filter to extract the audio signal from the pulse-width-modulated (PWM) output waveform. Many modern Class...

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App note: Avoid overvoltage stresses by minimizing power supply pumping on single-ended output, class D audio amplifiers

Sunday, April 8th, 2018

Here's class D audio amplifier pumping remedy from MAXIM Integrated, power-supply pumping is a problem that occurs when playing low-frequency audio signals through a single-ended output. Link here (PDF) This application note explains what power-supply pumping is and how it occurs in designs that employ a Class D audio amplifier...

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App note: High-frequency automotive power supplies

Sunday, March 11th, 2018

Switching power supply used in automotive electronics app note from Maxim Integrated. Link here (PDF) The combination of high switching frequency and high-voltage capability is difficult to achieve in IC design. You can, however, design an automotive power supply that operates with high frequency if you protect it from temporary...

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App note: Fan speed control is cool!

Sunday, March 11th, 2018

App note from Maxim Integrated about their MAX6650 and MAX6651 fan controllers chip. Link here (PDF) Temperature-based fan control is a necessity in a growing number of systems, both to reduce system noise and to improve fan reliability. When fan control is augmented by fan-speed monitoring, a speed-control loop can...

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App note: Choose the right power supply for your FPGA

Sunday, December 10th, 2017

Designing a power supply for FPGA includes multiple voltage, ripple management and power sequencing, here's an app note from Maxim Integrated. Link here (PDF) Field-programmable gate arrays (FPGAs) and complex programmable logic devices (CPLDs) require 3 to 15, or even more, voltage rails. The logic fabric is usually at the...

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App note: Current-sense amplifier doubles as a high common mode instrumentation amplifier

Sunday, December 10th, 2017

Application note from Maxim intergrated on utilizing a boost converter and a current-sense amplifier to form a regulator that derives +5V from -48V without isolation. Link here (PDF) Instrumentation amplifiers (IAs) are used where gain accuracy and dc precision are important, such as in measurement and test equipment. The downside...

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App note: Microcontroller Clock – crystal, resonator, RC Oscillator, or silicon oscillator?

Sunday, August 6th, 2017

App note from Maxim Integrated on clock sources of microcontrollers and their strengths and weaknesses. Link here The majority of clock sources for microcontrollers can be grouped into two types: those based on mechanical resonant devices, such as crystals and ceramic resonators, and those based on electrical phase-shift circuits such...

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App note: Nonvolatile STANDBY/ON Switch

Sunday, May 7th, 2017

Power status recovery in this application note from Maxim Integrated. Link here (PDF) Using an electronically programmable voltage reference (DS4305) as a single-bit nonvolatile memory cell, this circuit remembers the state of a STANDBY/ON switch that changes state with no operator present.

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App note: Single-pushbutton ON/OFF power control

Sunday, May 7th, 2017

With the help of an MAX6816 debouncer from Maxim Integrated to form a single push button power switch. Link here (PDF) This application note presents a single-pushbutton power-control circuit. The design consists of an ON/OFF control circuit comprised of a push button, debouncer, and flip-flop. This circuit toggles the power...

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App note: ASIC fixes for noisy analog “Oops”

Sunday, March 5th, 2017

App note from Maxim Integrated about simple fixes that can solve most issues when designing with ASICs. Link here (PDF) Noise is a common problem in mixed-signal ASICs, degrading performance and jeopardizing the completion of products. This application note gives hints and tips for adding external circuits that make many...

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App note: Multiplex boosted class-D without additional external circuitry

Sunday, March 5th, 2017

An analog switch MAX14689 from MAXIM Integrated let signals that are higher than rail voltage pass. Link here (PDF) Boosted class-D amplifiers drive speakers with voltages greater than the supply voltage. These amplifiers are becoming more common because they allow higher performance audio from a single lithium ion battery. Most...

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