OPA350UA

The OPA350 series of rail-to-rail CMOS operational amplifiers are optimized for low-voltage single-supply operation. Rail-to-rail inputs and outputs, low noise (5nV/√Hz), and high-speed operation (38MHz, 22V/μs) make the operational amplifiers well-suited for driving analog-to-digital (A/D) converters. They are also suitable for mobile phone power amplifier (PA) control loops and video processing (75Ω drive capability), as well as audio and general-purpose applications. The single-channel, dual-channel, and quad-channel versions have identical specifications to maximize design flexibility. The OPA350 series operates on a single supply as low as 2.5V, with an input common-mode voltage range from 300mV below ground to 300mV above the positive supply. With a 10kΩ load, the output voltage can swing within 10mV of the supply rails. The dual-channel and quad-channel designs have fully independent circuits to minimize crosstalk and completely eliminate interaction. The single-channel (OPA350) and dual-channel (OPA2350) are available in miniature MSOP-8 surface-mount, SO-8 surface-mount, and DIP-8 packages. The quad-channel (OPA4350) is available in space-saving SSOP-16 surface-mount and SO-14 surface-mount packages. All versions are rated for a temperature range of -40°C to 85°C and an operating temperature range of -55°C to 150°C.

Applications

• Mobile phone power amplifier (PA) control loop
• Driving A/D converters
• Video processing
• Data acquisition
• Process control
• Audio processing
• Communications
• Active filters
• Test equipment

Key features

• Rail-to-rail input
• Rail-to-rail output (within 10mV)
• High bandwidth: 38MHz
• High slew rate: 22V/μs
• Low noise: 5nV/√Hz
• Low THD+N: 0.0006%
• Unity-gain stable
• Compact package
• Single, dual, and quad channel