Integrated Circuits

== 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.

Unlike a mechanical POT, digial POTs often have the restriction that the three terminals of the POT needs to be < VCC and > GND making these devices harder to use in applications such as LCD contract adjustment where the contrast is controlled by a voltage lower then GND.

Voltage Regulators

Linear Regulators
LT1528	High current, Variable Voltage Regulator
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.
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.
The 723 Voltage Regulator	Precision Voltage Regulator. Can be used as fixed or floating, variable, linear or switching. NOTE: Only the DIP-14 version (image) has the Vz pin, which is used for negative regulators. The Metal Can and the Flat-Pack do not have enough pins so exclude the Vz.