<< Chapter < Page Chapter >> Page >

If you decide to choose the bq24040, you must make sure that the basic parametric and functional attributes of the device meet your system's needs. As described in previous chapters, a close inspection of the data sheet is a requirement for successful implementation. If you find yourself with a challenge you cannot address, then take advantage of the application notes associated with the device, or use the E2E Community, http://e2e.ti.com .

To explore the use of system components further, let's consider a more complex device. The ADS1294 family incorporates all of the features commonly required in medical electrocardiogram (ECG) and electroencephalogram (EEG) applications. The ADS1294 family of analog front-ends (AFEs) provides multichannel, simultaneous sampling; 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with built-in programmable gain amplifiers (PGAs); internal reference; and an onboard oscillator. Figure 2 is a block diagram of this device.

Reviewing the data sheet for this family of devices shows a complex solution to a sophisticated application. With devices as complex as the ADS1298, an in-depth exploration of the data sheet exceeds the scope of this chapter. However, the concepts previously described are applicable to the specific functions on the device.

If you decide to use an application such as the ADS1298, you will be designing the rest of your system to match the input and output characteristics – functional and parametric – of the ADS1298. When using a device as complex as the ADS1294, you must pay special attention to the timing relationships of the various signals; failure to do so will result in a bad outcome. Again, if you find yourself with a challenge you cannot address, take advantage of the application notes associated with the device or use the E2E Community, http://e2e.ti.com .

As the bq24040 and ADS1298 devices illustrate, integrated system components incorporate a plethora of functional solutions. These solutions cover all aspects of devices that have been discussed in previous chapters of this book, such as processors developed to support applications like motor control, battery-management systems with embedded controllers, touch-screen controllers, and many more.

Line drivers

At some point, you will be faced with a project that requires transmitting data across a several-inch-long backplane on a printed circuit board, or perhaps uses a cable that's several feet long. Electrically, you should think of the backplane or cable as transmission lines. Pay careful attention, because lack of signal integrity can result due to mismatched impedances.

In the bus interface environment, signal integrity is simply maintaining the characteristics of the input signal at the receiving end of the bus, where the bus is represented as a distributed RLC network. The impedance of the line driver, the bus network and the load on the bus can interact with each other to create signal distortions caused by energy reflections. The mathematics of these interactions are complex but can be simplified by modeling the system, as shown in Figure 3, and its associated reflection coefficient, shown in Equations 1(a) and 1(b).

Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
how can I make nanorobot?
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!

Source:  OpenStax, Senior project guide to texas instruments components. OpenStax CNX. Feb 12, 2013 Download for free at http://cnx.org/content/col11449/1.3
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Senior project guide to texas instruments components' conversation and receive update notifications?