OPA2344UA Integrated Circuit Chip LOW POWER OPERATIONAL AMPLIFIERS

OPA344 OPA2344 OPA4344

OPA345 OPA2345 OPA4345

LOW POWER, SINGLE-SUPPLY, RAIL-TO-RAIL OPERATIONAL AMPLIFIERS MicroAmplifier ™ Series

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

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 –40ºC to 85ºC. A SPICE macromodel for design analysis is available for download from www.ti.com.

ABSOLUTE MAXIMUM RATINGS⁽¹⁾

Supply Voltage, V+ to V- ................................................................... 7.5V

Signal Input Terminals, Voltage⁽²⁾ ..................... (V–) –0.5V to (V+) +0.5V

                                     Current⁽²⁾ .................................................... 10mA

Output Short-Circuit⁽³⁾ .............................................................. Continuous

Operating Temperature .................................................. –55°C to +125°C

Storage Temperature .....................................................–65°C to +150°C

Junction Temperature ...................................................................... 150°C

Lead Temperature (soldering, 10s) ................................................. 300°C

ESD Tolerance (Human Body Model) ............................................ 4000V

NOTES:

(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only. Functional operation of the device at these conditions, or beyond the specified operating conditions, 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.

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