LTC1966IMS8

The LTC1966IMS8 by ADI Electronics is a precision micropower RMS-to-DC converter designed for accurate true RMS DC conversion using sigma-delta technology. It features a gain accuracy of 0.1% from 50Hz to 1kHz and a total error of 0.25% within the same frequency range. The device boasts high linearity with an error of only 0.02%, facilitating simple system calibration.

Operating with a low supply current of 155µA typical and an ultralow shutdown current of 0.1µA, the LTC1966IMS8 is suitable for power-sensitive applications. It offers a constant bandwidth independent of input voltage, with a -3dB bandwidth of 800kHz and a ±1% error bandwidth of 6kHz. The converter supports flexible power supplies, operating from a single 2.7V to 5.5V supply or a dual supply up to ±5.5V. It also provides flexible input options, supporting both differential and single-ended configurations. The device is housed in an MS-8 package.

This RMS-to-DC converter family addresses common challenges in RMS conversion, such as limited bandwidth, restricted range, and complex error characterization, making instrument-grade applications more practical. It is well-suited for various instrumentation circuitry, including AC line monitors, voltage regulators, pre-amplifiers, and current meters.