OPA344

低功耗单电源轨至轨运算放大器 MicroAmplifierTM 系列

The and OPA345 series rail-to-rail CMOS operational amplifiers are designed for precision, low-power, miniature applications. The OPA344 is unity gain stable, while the OPA345 is optimized for gains greater than or equal to five, and has a gain-bandwidth product of 3MHz.

The OPA344 and OPA345 are 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.

Rail-to-rail input and output make them ideal for driving sampling analog-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.

A variety of packages are available. All are specified for operation from –40°C to 85°C. A SPICE macromodel for design analysis is available for download from www.ti.com.

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RAIL-TO-RAIL INPUT

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RAIL-TO-RAIL OUTPUT within 1mV

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LOW QUIESCENT CURRENT: 150µA typ

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MicroSIZE PACKAGES

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SOT23-5

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MSOP-8

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TSSOP-14

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GAIN-BANDWIDTH

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OPA344: 1MHz, G ≥ 1

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OPA345: 3MHz, G ≥ 5

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SLEW RATE

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OPA344: 0.8V/µs

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OPA345: 2V/µs

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THD + NOISE: 0.006%

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APPLICA ONS

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PCMCIA CARDS

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DATA ACQUISITION

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PROCESS CONTROL

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AUDIO PROCESSING

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COMMUNICATIONS

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ACTIVE FILTERS

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TEST EQUIPMENT

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