ADA4311-1ARHZ

Overview

The ADA4311-1ARHZ is a dual current feedback operational amplifier manufactured by Analog Devices Inc. It features a −3 dB bandwidth of 310 MHz and a slew rate of 1050 V/μs at G = +5 with a 50 Ω load. The device supports a supply voltage range from 6 V to 12 V, drawing up to 11.8 mA per amplifier in full power mode. It provides a differential output swing of 20.6 V p-p into a 100 Ω load. The input offset voltage is typically ±1 mV, and the input bias current is 2 μA. It operates within an extended industrial temperature range of −40°C to +85°C.

Feature Summary

• Dual high-speed current feedback amplifiers optimized for driving low impedance loads with high linearity.
• Integrated power management allowing four selectable modes: full power, medium power, low power, and complete shutdown via CMOS-compatible control pins.
• Thermally enhanced 10-lead MSOP package with an exposed paddle designed to improve heat dissipation.

Applications

• Home networking line drivers
• Twisted pair line drivers
• Power line communications (PLC)
• Video line drivers

Procurement Notes

Verify that the ordering suffix ARHZ corresponds to the RoHS compliant version packaged in a 10-lead Mini Small Outline Package with Exposed Pad. Confirm the specific revision level matches system requirements, as specifications are subject to change without notice. Ensure the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability.

Selection Notes

Select this component when broadband applications require high output current and fast slew rates while maintaining low distortion. The integrated power-down feature makes it suitable for systems requiring energy optimization. Verify that the single-supply operation constraints align with the system architecture, as the exposed thermal pad requires a direct ground connection.

Part Context

This part belongs to the ADA4311 series of high-speed line drivers. It is distinct from voltage feedback amplifiers due to its current feedback topology, which offers relatively constant bandwidth across various gain settings. The device is specifically engineered for signal integrity in transmission lines and communication interfaces.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

How does the ADA4311-1 handle power consumption during idle states?

The device includes power management control pins (PD1 and PD0) that allow selection between full power, medium power, low power, and a complete shutdown mode where quiescent current drops to 1.0 mA per amplifier.

What is the requirement for the exposed thermal pad on the package?

The exposed thermal pad must be connected to a solid ground plane to serve as the electrical reference for the negative supply voltage and to ensure adequate thermal conduction away from the die.