LT1994CDD#PBF

A high-precision, ultra-low noise, low-distortion, fully differential input/output amplifier optimized for 3V, single-supply operation. The output common-mode voltage is independent of the input common-mode voltage and can be adjusted by applying a voltage to the VOCM pin. A dedicated internal common-mode feedback path provides accurate output phase balance and reduces even-order harmonics. This makes it ideal for level-shifting ground-referenced signals to drive differential-input, single-supply ADCs. The outputs feature rail-to-rail swing capability and can source and sink up to 85mA of current. In addition to low-distortion performance, it offers a low input-referred voltage noise of 3nV/√Hz. The device maintains its performance at supply voltages as low as 2.375V. It draws only 13.5mA of supply current and features a hardware shutdown function that reduces current consumption to 300μA. Available in 8-pin MSOP or 8-pin DFN packages.

Applications

• Differential input A/D converter driver
• Single-ended to differential conversion
• Differential amplification and common-mode translation
• Rail-to-rail differential line driver/receiver
• Low-voltage, low-noise, differential signal processing

Key features

• Fully differential input and output
• Wide supply range: 2.375V to 12.6V
• Rail-to-rail output swing
• Low noise: 3nV/√Hz
• Low distortion, 2Vp-p @ 1MHz: -94dBc
• Adjustable output common-mode voltage
• Unity-gain stable
• Gain-bandwidth: 70MHz
• Slew rate: 65V/μs
• High output current: 85mA
• DC voltage offset < 2mV (maximum)
• Open-loop gain: 100V/mV
• Low-power shutdown mode
• 8-pin MSOP or 3mm×3mm DFN package