Single and Dual Ultra-Low Noise, Ultra-Low Distortion, Low Power Op Amp

The ISL55190 and ISL55290 are single and dual high speed operational amplifiers featuring low noise, low distortion, and rail-to-rail output drive capability. They are designed to operate with single and dual supplies from +5VDC (±2.5VDC) down to +3VDC (±1.5VDC). These amplifiers draw 16mA of quiescent supply current per amplifier. For power conservation, this family offers a low-power shutdown mode that reduces supply current to 21µA and places the amplifiers output into a high impedance state. The ISL55190 ENABLE logic places the device in the shutdown mode with EN = 0 and the ISL55290 is placed in the shutdown mode with EN = 1.

Features

• 1.2nV/√Hz input voltage noise, fO = 1kHz

• Harmonic Distortion -95dBc, -92dBc, fO = 4MHz

• Stable at gains as low as 5

• 800MHz gain bandwidth product (AV = 5)

• 268V/µs typical slew rate

• 16mA typical supply current (21µA in disable mode)

• 300µV typical offset voltage

• 25µA typical input bias current

• 3V to 5V single supply voltage range

• Rail-to-rail output

• Enable pin

• Pb-free plus anneal available (RoHS compliant)

Applications

• High speed pulse applications

• Low noise signal processing

• ADC buffers

• DAC output amplifiers

• Radio systems

• Portable equipment