The OPA350 series of rail-to-rail CMOS operational amplifiers are optimized for low
voltage, single-supply operation. Rail-to-rail input and output, low noise (5 nV/√Hz), and high
speed operation (38 MHz, 22 V/µs) make the amplifiers ideal for driving sampling Analog-to-Digital
(A/D) converters. They are also suited for cell phone PA control loops and video processing (75-Ω
drive capability), as well as audio and general purpose applications. Single, dual, and quad
versions have identical specifications for maximum design flexibility.
The OPA350 series operates on a single supply as low as 2.5 V, with an input common-mode
voltage range that extends 300 mV below ground and 300 mV above the positive supply. Output voltage
swing is to within 10 mV of the supply rails, with a 10-kΩ load. Dual and quad designs feature
completely independent circuitry for lowest crosstalk and freedom from interaction.
The single (OPA350) and dual (OPA2350) come in the miniature MSOP-8 surface mount, SO-8
surface mount, and DIP-8 packages. The quad (OPA4350) packages are in the space-saving SSOP-16
surface mount and SO-14 surface mount. All are specified from –40°C to 85°C and operate from –55°C
to 150°C.
