描述 Description

The OPA344 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.

特性 Features

? RAIL-TO-RAIL INPUT
? RAIL-TO-RAIL OUTPUT (within 1mV)
? LOW QUIESCENT CURRENT: 150μA typ
? MicroSIZE PACKAGES
? SOT23-5
? MSOP-8
? TSSOP-14

? GAIN-BANDWIDTH
? OPA344: 1MHz, G ≥ 1
? OPA345: 3MHz, G ≥ 5

? SLEW RATE
? OPA344: 0.8V/μs
? OPA345: 2V/μs

? THD + NOISE: 0.006%
? APPLICATIONS
? PCMCIA CARDS
? DATA ACQUISITION
? PROCESS CONTROL
? AUDIO PROCESSING
? COMMUNICATIONS
? ACTIVE FILTERS
? TEST EQUIPMENT