This weeks entry is the 20-bit delta-sigma DAC from TI.
Today’s entry is the LMC6042 dual-op amp from National Semiconductor. The layout of this device is a bit different from a standard op-amp due to the inclusion of some periodic components. It can also be noted that this die is mostly the same as the LMC6044 except that the two op-amps on the bottom-right side of the chip don’t have most of the metal deposited.
It looks like Siemens Energy and Automation has a has made their Seimens Technical Education Program (STEP!) courseware available (PDFs). Topic range from basic electronics, to motor control, to power distribution. What really caught my eye was the abundance of easily understandable safety information in the power distribution course section. The surge protection section is easy to understand and seems to contain enough information on properly wiring a residence to avoid certain catastrophes. Basically, this place seems like a good place to start for those who would like to do some minor work on their home’s power system but don’t have the required training. (This is not to say that STEP has all of the required training either!)
On a side note, I am in the middle of writing a document up to overview the Yagi antenna. I am more than half of the way done, however, I am going to the Neural Interfaces Conference next week. Consequently, the full version should be up next Thursday. If anyone else is there and has a desire to meet up then send an email.
This weeks entry is the INA2143 differential amplifier from Texas Instruments. This is a dual diff-amp and the partitioning is pretty apparent. It is also apparent that most of the device is constructed using a bi-polar process, physician which matches well with the decreased quiescent current with increased temperature in the datasheet.