Integrated Circuits

From OpenCircuits
Revision as of 07:23, 9 January 2007 by DavidCary (talk | contribs) (tips for designing with op amps)
Jump to navigation Jump to search

Digital Potentiometers

Digital Potentiometers(AD5204) The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.


Voltage Regulators

Linear Regulators
LT1528
LT1528
High current, Variable Voltage Regulator
TPS V-Reg
TPS V-Regs
These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.
Main-LM7805.jpg
Basic Voltage Regulators
Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.
 
Switching Regulators
MCP1253-ADJ.png
MCP1252/3
Extremely Efficient, 120mA Flyback Switching Regulators.

Microcontrollers

  • LPC2103 LPC2103 Low cost 70MHz ARM7TDMI-S FLASH Microcontroller from Philips.
  • Atmel AVR 8 bit FLASH microcontrollers
  • Microchip PIC 8 bit FLASH microcontrollers
  • Microchip dsPIC 16 bit FLASH microcontrollers ( DsPIC30F 5011 Development Board )
  • Cypress PSoC 8 bit FLASH microcontrollers

Op Amps

Op amps and instrumentation amps.

op amps: great for amplifying weak signals from sensors to a more useful level. Also used in filters, integrators, etc.

  • Wikibooks:Op-Amps has a "quick design process" using Daisy's theorem: "The sum of the gains = +1 in a properly-designed op amp circuit."

logic gates

There are hundreds of other specialized logic gates. Here we only list the ones we actually use in some Open Circuit Project:

  • 74HC595 eight bit shift register with output latch (used for POV display)