Here is an app note from Texas Instruments on how to power various systems required for portable media players. These devices require several different voltages, multiple power sources, as well as integrated battery charging. The article describes each individual section in detail.
Tag Archives: Texas Instruments
App note: Isolating analog and digital power supplies
Texas Instruments’ advice for isolating digital and analog power supplies in mixed signal circuits. This application note recommends power supply and ground noise-reduction techniques through the use of bypass capacitors and ferrite beads in TI’s PLL-based clock distribution circuits (CDC) devices. This application note also includes a numeric example, calculating the value of bypass and […]
App note: The effect of power supply noise on oscillator phase noise
TI on limiting phase noise from oscillators [PDF!]: This report provides the description of local oscillator (LO) phase noise degradation due to supply noise. Brief theoretical information supported by experiments carried out to demonstrate this degradation is discussed. The importance of selecting appropriate low-noise LDO (low-dropout) linear regulators is discussed.
App note: Theory of operation of linear regulators
Here is an app note from Texas Instruments describing the theory of operation of linear regulators. It goes on to explain and compare various topologies used in integrated linear voltage regulators. The explosive proliferation of battery powered equipment in the past decade has created unique requirements for a voltage regulator that cannot be met by […]
App notes: Operational amplifiers for everyone
Here is a comprehensive guide to operational amplifiers from Texas Instruments. It contains most of the things you ever wanted to know about designing with op amps. History, design examples, and theory is all covered by this guide. Via Electronics-Lab.
Breakout board for the Stellaris ARM Cortex 3 microcontrollers from Texas Instruments
Emeryth designed a breakout board for the Stellaris ARM Cortex 3 microcontrollers from Texas Instruments. It supports either LM3S3748 (USB device/host) or LM3S6938 (Ethernet). The LM3S6938 requires and additional Ethernet daughter board. He based his design of Texas Instruments evaluation boards. You can download the source files from his site. Via the forum.
App note: Implementing a 9-axis sensor fussion on the MSP430F5xx using the Direct Cosine Matrix algorithm
Here is an app note from Texas Instruments explaining how to implement the Direct Cosine Matrix algorithm on a MSP430F5xx to integrate date form 3 sensors. A magnetometer, gyroscope, and a an accelerometer were integrated to provide a 9-axis sensor. When creating an AHRS, also known as Magnetic, Angular Rate, and Gravity sensor (MARG), a […]
MSP430 microcontroller comparison tool
Compare Texas Instruments MSP430 microcontrollers with this online tool. Differences are highlighted in red: This comparison engine has been developed using data found on TI homepage. As there are close to 400 types of MCUs at TI, it’s often difficult to know at once what differs form 1 CPU to another. This utility is based […]
App note: An applications guide for operational amplifiers
Here is a application guide from Texas Instruments is an overview of operational amplifier-related circuits, theory, and formulas. Inverting amplifiers, buffers, analog adders, filters, and many more are covered. The general utility of the operational amplifier is derived from the fact that it is intended for use in a feedback loop whose feedback properties determine […]
App note: DMX512 isolated receivers using digital capacitive-isolation technology
Here is an app note from Texas Instruments describing in depth how DMX512 protocol functions, and how to build isolated DMX512 receivers. Their new isolated transceivers use digital capacitive-isolation technology, which has proven to be more reliable, and resilient, then the opto-isolation that was common in DMX512 devices. This type of isolation has been tested […]
Texas Instruments changes outrageous contest rules
A few days ago we wrote about Texas Instruments’ crazy contest rules. Participants have to hand over everything to enter, including ‘enjoyment’ of the project. TI noticed and updated the rules. From the comments: Thanks for bringing this to our notice. The terms and conditions in question have been corrected. The contest in question does […]
App note: In depth IC packaging reference
Here’s a comprehensive guide to IC packages from Texas Instruments. The list includes everything from standard 3 pin TO-220 to 732 pin ball-grid-array packages. Dimensions and pin spacing are provided on all of them. Via the forum.
App note: Buck-boost converter
Here is an article from Texas Instruments featured on EETimes describing how to design a buck-boost converter. These converters are used when the input voltage can be both above and below the output voltage. One example are 3.3V systems powered by lithium-ion batteries which swing from ~3V to ~4V. This design is in effect a […]
TMP103 and TMP006 evaluation kit winners
Today we announce the winners of the TMP103 and TMP006 evaluation kits. There were lots of great suggestions, thanks for your submissions. Congratulations to Benny Boy, his idea for the TMP006: Beekeepers can use infrared thermometers to locate (roughly, see www.beesource.com/forums) where a colony in a wall has built. Would be nice to hook the […]
TMP103 I2C temperature sensor test
TI’s TMP103 is a temperature sensor with 1 degree accuracy from -10 to +100 degrees Celsius. The two-wire I2C interface has some special sauce so you can address them all at once, instead of repeating commands to each. Today we’ll take a quick look at the evaluation module for this chip. You can win this […]
TMP006 infrared temperature sensor test
Today we did a quick test of the TMP006 infrared non-contact temperature sensor with an I2C interface. Point it at something and it measures the temperature. We were expecting a simple breakout board we could test with the Bus Pirate, but got full USB-enabled evaluation kits. To use the Bus Pirate with this board check […]
GIVEAWAY: TMP103 and TMP006 evaluation modules
Texas Instruments‘ PR boffins sent us TMP103 (I2C 12bit temperature sensor) and TMP006 (I2C infrared temperature sensor) evaluation modules to give away. We accepted these samples to followup on two Bus Pirate demos: Anthony’s demo of the TMP102 temperature sensor, and Joe’s demo of the TMP006. We expected a chip on a breakout board, instead […]
Setup MSP430 peripherals with point and click GUI
TI launched a new point and click GUI that configures MSP430 peripherals. Just select your options and C configuration code is generated. This could be a huge time saver for even experienced developers. Less time digging in a datasheet? Sign us up: the Grace software platform [is] a free visual plug-in that enables developers to […]
TI to acquire National Semiconductor
TI is buying National Semiconductor. We hope that means TI’s quality sample program will soon include National’s parts: Texas Instruments has signed a definitive agreement to purchase National Semiconductor in an all-cash transaction of about $6.5 billion. This merger will unite two industry leaders who have a common commitment to solving your analog needs. Both […]
Update from TI on earthquake damage to factories in Japan
rsdio writes: Everyone on the web – and even on the street! – is talking about Japan’s multiple disasters. Here is some news from the technical front: After a preliminary assessment, Texas Instruments … today said its manufacturing site in Miho, Japan, about 40 miles northeast of Tokyo, suffered substantial damage during last Friday’s 8.9 […]