LTC1960CUHF#PBF RMS-to-DC Converter

Updated: 2026-08-06

Overview

The LTC1960CUHF#PBF is a high-performance RMS-to-DC converter integrated circuit (IC) developed by Linear Technology, now part of Analog Devices. It is designed to accurately compute the root mean square (RMS) value of AC signals and convert it into a stable DC output. This IC is particularly valued for its precision and reliability in demanding applications such as industrial automation, test and measurement equipment, and communication systems. The device is housed in a compact 16-lead QFN (Quad Flat No-leads) package, making it suitable for space-constrained designs. Its ability to handle a wide input range and maintain high accuracy across varying conditions makes it a preferred choice for engineers and designers in the electronics industry.

Structure and Working Principle

The LTC1960CUHF#PBF operates by first squaring the input AC signal, averaging it over time, and then taking the square root of the result to produce a DC output proportional to the RMS value of the input. This process ensures accurate RMS measurements even for complex waveforms, including those with high crest factors. The IC includes internal circuitry for signal conditioning, squaring, averaging, and square root extraction, all integrated into a single chip. The QFN package provides excellent thermal performance and minimizes parasitic effects, which is critical for maintaining signal integrity in high-frequency applications.

Key Features

Key features of the LTC1960CUHF#PBF include a wide input bandwidth, typically up to several MHz, and high accuracy with low error margins. The device operates on a low supply voltage, making it energy-efficient for battery-powered applications. It also offers excellent linearity and stability over temperature variations. Additional features include a high input impedance, which minimizes loading effects on the signal source, and a low output impedance for driving subsequent stages of circuitry. These attributes make the IC versatile for a broad range of applications, from precision instrumentation to power monitoring systems.

Application Areas

The LTC1960CUHF#PBF is widely used in industrial automation systems for monitoring AC power quality and signal integrity. In test and measurement equipment, it provides accurate RMS readings for oscilloscopes, multimeters, and analyzers. Communication systems benefit from its ability to handle high-frequency signals with minimal distortion. Other applications include audio processing, where RMS measurements are critical for volume normalization, and renewable energy systems, where it aids in monitoring AC outputs from inverters and generators. Its robustness and precision make it indispensable in fields requiring reliable signal analysis.

Maintenance and Precautions

To ensure optimal performance, the LTC1960CUHF#PBF should be used with proper PCB layout techniques, including short trace lengths and adequate grounding to minimize noise and interference. Thermal management is also important, especially in high-power applications, to prevent overheating and ensure long-term reliability. Users should avoid exceeding the specified input voltage range to prevent damage to the IC. Additionally, electrostatic discharge (ESD) precautions should be observed during handling and installation to protect the sensitive semiconductor components.

B2B Procurement Guide

When procuring the LTC1960CUHF#PBF in bulk, B2B buyers should verify the authenticity of the supplier to avoid counterfeit components. Reputable distributors and authorized resellers of Analog Devices products are recommended. Buyers should also consider lead times and minimum order quantities (MOQs) to align with production schedules. Price negotiations may be possible for large-volume orders, and buyers should inquire about discounts or long-term supply agreements. Technical support and datasheets should be readily available from the supplier to assist with integration and troubleshooting.