描述 Description

DESCRIPTION
The OPA349 and OPA2349 are ultra-low power operational amplifiers that provide 70kHz bandwidth with only 1μA quiescent current. These rail-to-rail input and output amplifiers are specifically designed for battery-powered applications. The input common-mode voltage range extends 200mV beyond the power-supply rails and the output swings to within 350mV of the rails, maintaining wide dynamic range. Unlike some micropower op amps, these parts are unity-gain stable and require no external compensation to achieve wide band width. The OPA349 features a low input bias current that allows the use of large source and feedback resistors.FEATURES
● LOW SUPPLY CURRENT: 1μA
● GAIN-BANDWIDTH: 70kHz
● UNITY-GAIN STABLE
● LOW INPUT BIAS CURRENT: 10pA (max)
● WIDE SUPPLY RANGE: 1.8V to 5.5V
● INPUT RANGE: 200mV Beyond Rails
● OUTPUT SWINGS TO 350mV OF RAILS
● OUTPUT DRIVE CURRENT: 8mA
● OPEN-LOOP GAIN: 90dB
● MicroPACKAGES: SC70, SOT23-5, SOT23-8APPLICATIONS
● BATTERY PACKS AND POWER SUPPLIES
● PORTABLE PHONES, PAGERS, AND CAMERAS
● SOLAR-POWERED SYSTEMS
● SMOKE, GAS, AND FIRE DETECTION SYSTEMS
● REMOTE SENSORS
● PCMCIA CARDS
● DRIVING ANALOG-TO-DIGITAL (A/D) CONVERTERS
● MicroPOWER FILTERS

特性 Features

● LOW SUPPLY CURRENT: 1μA
● GAIN-BANDWIDTH: 70kHz
● UNITY-GAIN STABLE
● LOW INPUT BIAS CURRENT: 10pA (max)
● WIDE SUPPLY RANGE: 1.8V to 5.5V
● INPUT RANGE: 200mV Beyond Rails
● OUTPUT SWINGS TO 350mV OF RAILS
● OUTPUT DRIVE CURRENT: 8mA
● OPEN-LOOP GAIN: 90dB
● MicroPACKAGES: SC70, SOT23-5, SOT23-8

應(yīng)用 Application

● BATTERY PACKS AND POWER SUPPLIES
● PORTABLE PHONES, PAGERS, AND CAMERAS
● SOLAR-POWERED SYSTEMS
● SMOKE, GAS, AND FIRE DETECTION SYSTEMS
● REMOTE SENSORS
● PCMCIA CARDS
● DRIVING ANALOG-TO-DIGITAL (A/D) CONVERTERS
● MicroPOWER FILTERS