Features: `LOW SUPPLY CURRENT: 1A
`GAIN-BANDWIDTH: 70kHz
`UNITY GAIN STABLE
`LOW INPUT BIAS CURRENT: 10pA
`WIDE SUPPLY RANGE: 1.8V to 5.5V
`INPUT RANGE 200mV BEYOND RAILS
`OUTPUT SWINGS TO 150mV OF RAILS
`OUTPUT DRIVE CURRENT: 20mA
`OPEN-LOOP GAIN: 90dB
`SOT23 MicroPACKAGESApplication·BATTERY PACKS AND POWER SUPPLIES PORTABLE
·PHONES/PAGERS/CAMERAS SOLAR-POWERED SYSTEMS
·SMOKE/GAS/FIRE DETECTION SYSTEMS
·REMOTE SENSORS
·PCMCIA CARDS
·DRIVING A/D CONVERTERS
·MicroPOWER FILTERSSpecificationsSupply Voltage, V+ to V- ..................................................................5.5V
Signal Input Terminals, Voltage(2)....................(V-) - 0.5V to (V+) + 0.5V
Current(2)..................................................10mA
Output Short Circuit(3)..........................................................Continuous
Operating Temperature...................................................-55 to +125
Storage Temperature......................................................-65 to +150
Junction Temperature......................................................................150
Lead Temperature (soldering, 3s)...................................................300
NOTES: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may de- grade device reliability. These are stress ratings only, and functional opera- tion of the device at these, or any other conditions beyond those specified, is not implied. (2) Input terminals are diode-clamped to the power supply rails Input signals that can swing more than 0.5V beyond the supply rails should be current-limited to 10mA or less. (3) Short circuit to ground, one amplifier per package.
DescriptionThe OPA349 and OPA2349 are ultra-low power op- erational amplifiers that provide 70kHz bandwidth with only 1?A quiescent current. These rail-to-rail input and output amplifiers are specifically designed for battery powered applications. Unlike some micropower op amps, these parts are unity-gain stable and require no external ompensation. The OPA349'S low input bias current allows the use of large source and feedback resistors. The input common-mode volt- age range extends 200mV beyond the power supply rails and the output swings to within 150mV of the rails, maintaining wide dynamic range.
OPA349 can be operated with power supplies from 1.8V to 5.5V with little change in performance, guar- anteeing continuing superior performance even in low battery situations.
OPA349 comes in the miniature SOT23-5, SO-8 sur-face mount and PDIP-8(1) packages. OPA2349 dual is also available in the SOT23 (8-lead SOT23-8), as well as the SO-8 surface mount packages. These tiny pack- ages are ideal for use in high-density applications, such as PCMCIA cards, battery packs and portable instruments.
All models are specified for the commercial tempera- ure range, 0 to +70.
OPA349 Data Sheet
