TI TLV2221IDBVT

The TLV2221 is a single low-voltage operational amplifier available in the SOT-23 package. It offers a compromise between the ac performance and output drive of the TLV2231 and the micropower TLV2211. It consumes only 150 μA (max) of supply current and is ideal for battery-powered applications. The device exhibits rail-to-rail output performance for increased dynamic range in single- or split-supply applications. The TLV2221 is fully characterized at 3 V and 5 V and is optimized for low-voltage applications. The TLV2221, exhibiting high input impedance and low noise, is excellent for small-signal conditioning for high-impedance sources, such as piezoelectric transducers. Because of the micropower dissipation levels combined with 3-V 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). With a total area of 5.6 mm², 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, minimizing noise pick-up from long PCB traces. Both inputs are separated by GND to prevent coupling or leakage paths. The OUT and N- terminals are on the same end of the board to provide negative feedback. Finally, gain setting resistors and decoupling capacitor are easily placed around the package.

• Output Swing Includes Both Supply Rails
• Low Noise... 19 nV/Hz Typ at f = 1 kHz
• Low Input Bias Current... 1 pA Typ
• Fully Specified for Single-Supply 3-V and 5-V Operation
• Very Low Power... 110 μA Typ
• Common-Mode Input Voltage Range Includes Negative Rail
• Wide Supply Voltage Range 2.7 V to 10 V
• Macromodel Included

• battery-powered applications
• hand-held monitoring
• remote-sensing applications
• interfacing with analog-to-digital converters (ADCs)