Single, 10-V, 2-MHz operational amplifier

The TLV2231 is a single low-voltage

operational amplifier available in the SOT-23 package. The TLV2231 offers 2MHz of

bandwidth and 1.6V/µs of slew rate for applications requiring good ac performance.

The device exhibits rail-to-rail output performance for increased dynamic range in

single- or split-supply applications. The TLV2231 is fully characterized at 3V and

5V and is optimized for low-voltage applications.

The TLV2231, with a high input

impedance and low noise, is excellent for small-signal conditioning of

high-impedance sources, such as piezoelectric transducers. As a result of the

micropower dissipation levels combined with 3V operation, these devices work well in

hand-held monitoring and remote-sensing applications. In addition, the rail-to-rail

output feature with single- or split-supplies makes this family a great choice when

interfacing with analog-to-digital converters (ADCs). The device also drives 600Ω

loads for telecom applications.

With a total area of

5.6mm2, the SOT-23 package only requires one-third the board space of the

standard 8-pin SOIC package. This ultra-small package allows designers to place

single amplifiers very close to the signal source, and minimizes noise pick-up from

long printed circuit board (PCB) traces. TI also takes special care to provide a

pinout that is optimized for board layout (see the following figure). Both inputs

are separated by ground to prevent coupling or leakage paths. The OUT and IN– pins

are on the same end of the board to provide negative feedback. Finally, gain setting

resistors and the decoupling capacitor are easily placed around the package.