ADP7118ARDZ-3.3

Overview

The ADP7118ARDZ-3.3 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc., providing a fixed 3.3 V output with a maximum current of 200 mA. It operates from an input voltage range of 2.7 V to 20 V and features low noise performance of 11 µV rms. The device includes user-programmable soft start, precision enable, and thermal overload protection. It is housed in an 8-lead SOIC package with an exposed pad for enhanced thermal dissipation.

Feature Summary

• Provides ultralow output noise independent of the fixed output voltage setting
• Features high power supply rejection ratio across various frequencies
• Supports user-programmable soft start via external capacitor
• Includes precision enable pin with programmable thresholds

Applications

• ADC and DAC circuits
• Precision amplifiers
• VCO VTUNE control power
• Medical and healthcare equipment
• Industrial and instrumentation systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm datasheet revision status matches application requirements. Ensure proper ESD handling protocols are followed during storage and assembly. Check for specific automotive qualification if required for the target environment.

Selection Notes

Select this part for applications requiring stable regulation from higher input voltages down to 3.3 V. Ensure input capacitance meets minimum stability requirements. Consider thermal resistance characteristics when designing PCB layout for high load currents. Verify that the fixed output voltage aligns with system needs before utilizing adjustable configurations.

Part Context

This component belongs to the ADP7118 family of low noise LDO regulators. It shares architectural similarities with other variants offering different fixed output voltages or package options. The series is designed for high-performance analog and mixed-signal circuits requiring clean power supplies.

Replacement Considerations

Direct substitutes include other ADP7118 variants with different output voltages or packages, such as ADP7118AUJZ-3.3-R7 or ADP7118ACPZN3.3-R7, provided pin compatibility and electrical specifications match the design requirements.