ADM7160ACPZN2.5-R7

Overview

The ADM7160ACPZN2.5-R7 is a fixed-output ultralow noise linear regulator manufactured by Analog Devices Inc., providing a stable 2.5 V output with a maximum load current of 200 mA. It operates within an input voltage range of 2.2 V to 5.5 V and features a typical dropout voltage of 150 mV at full load. The device achieves a power supply rejection ratio (PSRR) of 54 dB at 100 kHz and maintains an ultralow output noise of 9.5 µV rms across the 0.1 Hz to 100 kHz bandwidth. Designed for stability with small ceramic capacitors, it includes internal current-limit and thermal overload protection circuits.

Feature Summary

• Ultralow noise performance achieved without requiring external bypass capacitors
• Low dropout voltage capability ensures high efficiency over wide input ranges
• Integrated enable pin with internal pull-down resistor for automatic startup control
• Built-in current-limit and thermal overload protection prevents damage under adverse conditions

Applications

• ADC/DAC power supplies
• RF, VCO, and PLL power supplies
• Post dc-to-dc regulation

Procurement Notes

Verify the specific package type against the ordering suffix, as the ADM7160 series is available in both 5-lead TSOT and 6-lead LFCSP configurations. Confirm that the component matches the required 2.5 V fixed output voltage option. Ensure compatibility with standard surface-mount assembly processes and check for any regional distribution restrictions or lifecycle status updates directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this regulator for applications demanding minimal output noise without adding external filtering components. It is suitable for space-constrained designs due to its compact footprint and ability to operate stably with small 1 µF ceramic capacitors. Consider the thermal resistance characteristics of the chosen package when designing for high ambient temperatures or significant power dissipation scenarios.

Part Context

This component belongs to the ADM7160 family of ultralow noise linear regulators designed for sensitive analog front-end and RF applications. The series offers multiple fixed output voltage options ranging from 1.1 V to 3.3 V. The ACPZN variant specifically denotes the 6-lead LFCSP package, which provides excellent thermal performance compared to the alternative TSOT packaging.

Replacement Considerations

Direct replacements include other ADM7160 variants with different output voltages or packages, such as ADM7160ACPZ-3.3-R7. Cross-family alternatives like the ADP7102 or ADM7150 offer higher current capabilities but differ significantly in noise profiles and operating specifications.