Typically testing “Typical” in a typical manner, app note here (PDF!) from Maxim: Typical (typ) is typically the most misunderstood word in Integrated Circuit (IC) testing. Typical values can’t be tested directly because they are a statistical value. We discuss how to read a data sheet to understand what parameters are tested and under what […]
Tag Archives: application note
App note: Using feature set of I2C Master on TM4C129x microcontrollers
An application note (PDF!) from TI on using feature set of I2C Master on TM4C129x microcontrollers: The inter-integrated circuit (I2C) is a multi-master, multislave, single ended bus that is typically used for attaching lower speed peripheral ICs to processors and micocontrollers. The type of slave devices range from non volatile memory to data acquisition devices like analog-to-digtal converter […]
App note: USB DFU protocol used in the STM32 bootloader
An app note from ST, USB DFU protocol used in the STM32 bootloader (PDF!): This application note describes the USB DFU protocol used in STM32 microcontroller bootloader. It details each supported command. For more information about the USB hardware resources and requirements for your device bootloader, please refer to the “STM32 system memory boot mode” […]
App note: Use and calibration of the internal temperature indicator
Use and calibration of the internal temperature indicator (PDF!), an application note from Microchip: Many PIC16 family devices include an internal temperature indicator. These devices include the PIC16F72X device family, PIC16F1XXX device family, and the PIC12F1XXX device family. The temperature indicator is internally connected to the input multiplexer of the ADC (Figure 1). Refer to […]
App note: Understanding and using cyclic redundancy checks with Maxim 1-wire and iButton products
Understanding and using cyclic redundancy checks with Maxim 1-wire and iButton products, application note here (PDF!) from Maxim: All 1-Wire® devices, including iButton® devices, contain an 8-byte unique registration number in read-only memory (ROM). This registration number is used as a unique network address on a 1-Wire bus. To ensure data communication integrity, one byte […]
App note: Accurate, fast settling analog voltages from digital PWM signals
Accurate, fast settling analog voltages from digital PWM signals, app note from Linear Technology (PDF!): Pulse width modulation (PWM) is a common technique for generating analog voltages from a digital device such as a microcontroller or FPGA. Most microcontrollers have dedicated PWM generation peripherals built in, and it only takes a few lines of RTL […]
App note: Implementing a TMDS video interface in the Spartan-6 FPGA
Implementing a TMDS video interface in the Spartan-6 FPGA, an app note here (PDF!) from Xilinx: The DVI and HDMI protocols use TMDS at the physical layer. The TMDS throughput is a function of the serial data rate of the video screen mode being transmitted. This in turn determines the FPGA speed grade that must be used to […]
App note: 16-Bit multiplication and addition by using the Math accelerator peripheral on PIC16(L)F161X
16-Bit multiplication and addition by using the Math accelerator peripheral on PIC16(L)F161X (PDF!) application note from Microchip: Several products in the PIC® device family have a Math Accelerator module to do a 16-bit multiplication and addition in hardware. This technical brief describes briefly how the module works, how to use this module in users’ applications, and […]
App note: 400MHz, 2500V/µs, 9mA single/dual operational amplifiers
400MHz, 2500V/µs, 9mA single/dual operational amplifiers (PDF!) application note from Linear Technology: FEATURES 400MHz Gain Bandwidth Product 2500V/μs Slew Rate –85dBc Distortion at 5MHz 9mA Supply Current Per Amplifier 6nV/√Hz Input Noise Voltage Unity-Gain Stable 1.5mV Maximum Input Offset Voltage 8μA Maximum Input Bias Current 800nA Maximum Input Offset Current 40mA Minimum Output Current, VOUT = ±3V […]
App note – Power distribution system (PDS) design: Using bypass/decoupling capacitors
An app note (PDF!) from Xilinx on power distribution system (PDS) design using bypass/decoupling capacitors: This application note specifies how to build power distribution systems for Virtex™ devices. It also covers the basic principles of power distribution systems and bypass or decoupling capacitors. A step-by-step process is described where a power distribution system can be designed […]
App note: MSP432 platform porting guide
Here’s a MSP432 platform porting guide from TI, app note here (PDF!): The goals for this porting guide is to help developers accurately assess the effort to port an existing application from one MSP platform to another, ultimately to derive a porting strategy with complete hardware and software coverage that properly ports the existing application without introducing bugs due to […]
App note: L6234 three phase motor driver
An app note (PDF!) from STMicroelectronics on L6234 three phase motor driver: The L6234 is a DMOSs triple half-bridge driver with input supply voltage up 52V and output current of 5A. It can be used in a very wide range of applications. It has been realized in Multipower BCD60II technology which allows the combination of isolated DMOS […]
App note: A Closed-loop, wideband, 100A active load
A closed-loop, wideband, 100A active load (PDF!) app note by Jim Williams of Linear Technology: Digital systems, particularly microprocessors, furnish transient loads in the 100A range that a voltage regulator must service. Ideally, regulator output is invariant during a load transient. In practice, some variation is encountered and becomes problematic if allowable operating voltage tolerances are exceeded. 100A […]
App note: Improving ADC resolution by oversampling and averaging
Silicon Labs’ application note (PDF!) on improving ADC resolution by oversampling and averaging: This application note describes utilizing oversampling and averaging to increase the resolution and SNR of analog-to-digital conversions. Oversampling and averaging can increase the resolution of a measurement without resorting to the cost and complexity of using expensive off-chip ADCs. This application note discusses how […]
App note: TPS6122x low input voltage, 0.7V boost converter with 5.5μA quiescent current
An application note from TI, TPS6122x low input voltage, 0.7V boost converter with 5.5μA quiescent current (PDF!): The TPS6122x family devices provide a power-supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based […]
App note: Operational amplifier applications using 8-Bit PIC microcontrollers
Operational amplifier applications using 8-Bit PIC microcontrollers (PDF!) from Microchip: This document aims at uncovering some of the more important parameters of the op amp and the significance in certain applications. Specific examples and case studies of applications using the on-chip op amp of the PIC16F families of microcontrollers will be discussed. A comparison of the […]
App note: Designing efficient digital up and down converters for narrowband systems
An app note (PDF!) from Xilinx on designing efficient digital up and down converters for narrowband systems: Digital Up Converters (DUC) and Digital Down Converters (DDC) are key components of RF systems in communications, sensing, and imaging. This application note demonstrates how efficient DUC/DDC implementations can be created by leveraging Xilinx® DSP tools and IP portfolio for increased […]
App note: Linear speed control of stepper motor
An app note (PDF!) from Atmel on Linear speed control of stepper motor: This application note describes how to implement an exact linear speed controller for stepper motors. The stepper motor is an electromagnetic device that converts digital pulses into mechanical shaft rotation. Many advantages are achieved using this kind of motors, such as higher simplicity, since no […]
App note: D-PHY Solutions
An app note (PDF!) from Xilinx on D-PHY Solutions: Traditionally, interfaces between components on a printed circuit board (PCB) are based on single-ended parallel buses at low bit rates (LVCMOS), differential high-speed serial buses, or single differential channels. The D-PHY provides an extension to this structure by turning the low-speed, low-power interface to the serial format of the high-speed […]
App note: Standalone Linear Li-Ion battery charger with thermal regulation in ThinSOT
Standalone Linear Li-Ion battery charger with thermal regulation in ThinSOT application note (PDF!) from Linear: The LTC4054 is a single cell lithium-ion battery charger using a constant-current/constant voltage algorithm. It can deliver up to 800mA of charge current (using a good thermal PCB layout) with a final float voltage accuracy of ±1%. The LTC4054 includes an […]