1 Features
1• Rail-to-Rail Input
• Rail-to-Rail Output (Within 1 mV)
• MicroSize Packages
• Wide Bandwidth: 5.5 MHz
• High Slew Rate: 6 V/μs
• Low THD + Noise: 0.0007% (f = 1 kHz)
• Low Quiescent Current: 750 μA/Channel
• Single, Dual, and Quad Versions

2 Applications
• Driving A/D Converters
• PCMCIA Cards
• Data Acquisition
• Process Control
• Audio Processing
• Communications
• Active Filters
• Test Equipment

3 Description
The OPA340 series rail-to-rail CMOS operational
amplifiers are optimized for low-voltage, single-supply
operation. Rail-to-rail input and output and highspeed
operation make them ideal for driving sampling
analog-to-digital (A/D) converters. They are also wellsuited
for general purpose and audio applications as
well as providing I/V conversion at the output of
digital-to-analog (D/A) converters. Single, dual, and
quad versions have identical specifications for design
flexibility.
The OPA340 series operate on a single supply as low
as 2.5 V with an input common-mode voltage range
that extends 500 mV below ground and 500 mV
above the positive supply. Output voltage swing is to
within 1 mV of the supply rails with a 100-kΩ load.
These devices offer excellent dynamic response
BW = 5.5 MHz, SR = 6 V/μs), yet quiescent current
is only 750 A. Dual and quad designs feature
completely independent circuitry for lowest crosstalk
and freedom from interaction.
The single (OPA340) packages are the tiny 5-pin
SOT-23 surface mount, 8-pin SOIC surface mount,
and 8-pin DIP. The dual (OPA2340) comes in the
miniature 8-pin VSSOP surface mount, 8-pin SOIC
surface mount, and 8-pin PDIP packages. The quad
OPA4340) packages are the space-saving 16-pin
SSOP surface mount and 14-pin SOIC surface
mount. All are specified from –40°C to 85°C and
operate from –55°C to 125°C. A SPICE macromodel
is available for design analysis.