OPA349

OPA349 OPA2349 OPA349 OPA2349 SBOS121B – JUNE 2000 – REVISED JANUARY 2004 1µA, Rail-to-Rail I/O CMOS OPERATIONAL AMPLIFIERS FEATURES q LOW SUPPLY CURRENT: 1µA q GAIN-BANDWIDTH: 70kHz q UNITY-GAIN STABLE q LOW INPUT BIAS CURRENT: 10pA (max) q WIDE SUPPLY RANGE: 1.8V to 5.5V q INPUT RANGE: 200mV Beyond Rails q OUTPUT SWINGS TO 350mV OF RAILS q OUTPUT DRIVE CURRENT: 8mA q OPEN-LOOP GAIN: 90dB q MicroPACKAGES: SC70, SOT23-5, SOT23-8 APPLICATIONS q BATTERY PACKS AND POWER SUPPLIES q PORTABLE PHONES, PAGERS, AND CAMERAS q SOLAR-POWERED SYSTEMS q SMOKE, GAS, AND FIRE DETECTION SYSTEMS q REMOTE SENSORS q PCMCIA CARDS q DRIVING ANALOG-TO-DIGITAL (A/D) CONVERTERS q MicroPOWER FILTERS OPAx349 RELATED PRODUCTS FEATURES 1µA, 5.5kHz, Rail-To-Rail 1µA, 5.5kHz, Rail-To-Rail 7µA, 160kHz, Rail-To-Rail, 2.7V to 16V Supply 7µA, 160kHz, Rail-To-Rail, Micro Power 20µA, 500kHz, Rail-To-Rail, 1.8V Micro Power 20µA, 350kHz, Rail-To-Rail, Micro Power 45µA, 1MHz, Rail-To-Rail, 2.1V to 5.5V Supply PRODUCT TLV240x TLV224x TLV238x TLV27Lx TLV276x OPAx347 OPAx348 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, thes...