LTC2946IDE

Description：IC SUPERVISOR
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:97890064a8fc Category: Energy Metering Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC SUPERVISOR
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Input Impedance：-
Measurement Error：0.40%
Voltage - I/O High：-
Voltage - I/O Low：-
Current - Supply：900µA
Voltage - Supply：2.7 V ~ 100 V
Meter Type：Single Phase
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：16-WFDFN Exposed Pad
Supplier Device Package：16-DFN (4x3)
Grade：-
Qualification：-

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LTC2946IDE

Overview

The LTC2946IDE is a single-phase energy monitor IC manufactured by Analog Devices Inc., housed in a 16-lead DFN EP package. It operates within a supply voltage range of 2.7V to 100V and supports an I2C interface at speeds up to 10kHz. The device measures current, voltage, power, charge, and energy with a measurement error of 0.5%. It draws 900µA of supply current and functions reliably across a temperature range of -40°C to 125°C.

Feature Summary

Rail-to-rail system monitoring capability for comprehensive electrical parameter tracking
Integrated shunt regulator designed for power supplies exceeding 100V
Supports bidirectional power monitoring with distinct forward path energy and charge tracking

Applications

Wide range negative power, charge, and energy monitoring for -4V to -500V sources
Bidirectional power monitoring systems requiring forward path energy accumulation
Automotive applications utilizing the automotive-grade variant specifications

Procurement Notes

Verify the specific suffix configuration against official Analog Devices documentation to ensure correct package type and temperature grade. Confirm RoHS compliance status and material declaration details prior to integration. Cross-reference the part number with the latest datasheet revision to validate interface speed and operating voltage ranges for your specific design requirements.

Selection Notes

Select this component when rail-to-rail monitoring is required for high-voltage or negative supply environments. The integrated shunt regulator simplifies designs involving supplies above 100V. Ensure the application utilizes an I2C interface compatible with the specified 10kHz speed limit. Verify that the 16-lead DFN EP package fits the thermal and spatial constraints of the target PCB layout.

Part Context

This device belongs to the LTC2946 family of energy monitors from Analog Devices Inc. The family includes variants such as the IMS, CMS, and HDE series, which share core monitoring functionalities but differ in package types like MSOP and DFN. These components are designed for precise electrical measurement in power management systems.