Week 7 (FYP 2)

                 

             By this week, I try research and to find the data sheet of Operational Amplifier OPA 344. These Op-Amp functioning as to amplify the sounds of voice or as Audio processing. the description of Op-Amp  OPA 334 is to series rail-to-rail CMOS operational amplifiers are designed for precision, low-power, miniature applications. The OPA 344 is unity gain stable, while the OPA 345 is optimized for gains greater than or equal to five, and has a gain-bandwidth product of 3MHz. The OPA 344 is optimized to operate on a single supply from 2.5V and up to 5.5V with an input common-mode voltage range that extends 300mV beyond the supplies. Quiescent current is only 250μA (max).

Figure 1: Operational Amplifier OPA 344, 345

                Rail-to-rail input and output make them ideal for driving sampling analogue-to-digital converters. They are also well suited for general purpose and audio applications and providing I /V conversion at the output of D /A converters. Single, dual and quad versions have identical specs for design flexibility. OPA 344 series op amps are unity gain stable and can operate on a single supply, making them highly versatile and easy to use. The op-amp was to amplify the sounds of voice, door knocks and so on. Other then that, the application of the op-Amp is to processing audio.