ISL55291IUZ-T13

Overview

The ISL55291IUZ-T13 is a dual-channel ultra-low noise, ultra-low distortion operational amplifier manufactured by Renesas Electronics Corporation. It features rail-to-rail output drive capability and operates on single or split supplies ranging from +3V to +5.5V. The device offers an 800MHz gain bandwidth product, 260V/µs slew rate, and 1.3nV/√Hz input voltage noise. It includes a low-power shutdown mode reducing supply current to 21µA per channel. The component is housed in a 10-lead MSOP package.

Feature Summary

• Ultra-low noise performance with 1.3nV/√Hz input voltage noise
• Rail-to-rail output swing for maximum dynamic range
• Low-power shutdown mode for energy conservation
• High-speed operation with 800MHz gain bandwidth

Applications

• ADC buffers
• DAC output amplifiers
• Radio systems
• Portable equipment

Procurement Notes

Verify the datasheet revision and manufacturer origin, as Intersil products are now part of Renesas. Confirm the specific ordering suffix matches the required tape and reel quantity. Ensure the package type corresponds to the design requirements. Check for RoHS compliance status if applicable to your manufacturing process.

Selection Notes

Select this component for high-frequency applications requiring minimal signal degradation. Consider the dual-channel configuration for space-constrained designs. Evaluate the shutdown functionality against power management needs. Verify that the 3V to 5.5V supply range aligns with the system architecture.

Part Context

This part belongs to the ISL55191/ISL55291 family of high-speed operational amplifiers. It is designed for communication and imaging applications where low noise and low distortion are critical. The dual-channel variant provides two independent amplifiers in a compact package.

Replacement Considerations

The ISL55290 is listed as a possible substitute product in official documentation.

FAQ

How does the enable logic function for the ISL55291?

The ISL55291 uses an active-low enable pin. Logic '0' enables the amplifier, while Logic '1' places it in the disabled state with reduced supply current.

What is the input common-mode voltage range?

The input common-mode voltage range includes ground, extending up to approximately 3.8V when operating from a 5V supply.