TLV2221

单路 LinCMOSTM 轨至轨微功耗运算放大器

The 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 5.6mm2, 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, minimizing noise pick-up from long PCB traces. has also taken special care to provide a pinout that is optimized for board layout. Both inputs are separated by GND to prevent coupling or leakage paths. The OUT and IN- 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.

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Output Swing Includes Both Supply Rails

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Low Noise . . . 19 nV/Hz Typ at f = 1 kHz

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Low Input Bias Current . . . 1 pA Typ

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Fully Specified for Single-Supply 3-V and 5-V Operation

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Very Low Power . . . 110 µA Typ

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Common-Mode Input Voltage Range Includes Negative Rail

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Wide Supply Voltage Range 2.7 V to 10 V

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Macromodel Included

Advanced LinCMOS is a trademark of Texas Instruments Incorporated.