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LTC2990IMS#PBF

LTC2990IMS#PBF

Analog Devices
Multi-channel power-monitoring ADC suitable for measuring voltage, current and computing power across rails.
NRND2,100 in stock
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Overview

The LTC2990 is a multi-channel power-monitoring ADC that measures voltages, currents (via external shunt or sense resistor), and computes power for multiple rails while also providing local and remote temperature sensing. It communicates over an I2C-compatible serial interface and includes programmable alerts for fault or threshold conditions. The device accepts a single-supply voltage from 2.9 V to 5.5 V and is offered in a small surface-mount package.

Why Choose This Part

Provides integrated measurement of voltage, current and computed power across multiple rails plus both local and remote temperature sensing in a single IC, reducing BOM and board space versus discrete solutions. I2C output and programmable alert pins simplify system integration and enable centralized telemetry and alarm handling. Wide supply range (2.9 V to 5.5 V) and compact surface-mount package make it flexible for many embedded and industrial designs.

Applications

Board-level power monitoring
Measure multiple supply rails, current draw and computed power for embedded systems, FPGAs, and multi-rail PMIC-equipped boards.
Server and telecom rail monitoring
Track power usage and thermal conditions of multiple supply domains in rack-mounted equipment and telecom line cards.
Battery and energy management
Monitor charge/discharge currents, bus voltages and temperature for battery-powered systems or power-storage subsystems.
Instrument and test fixtures
Provide compact, I2C-accessible telemetry for automated test equipment, bench fixtures, and manufacturing test.

Key Specifications

Accuracy +/-3.5degC Local(Max), +/-1.5degC Remote(Max)
Function Temp Monitoring System (Sensor)
Topology ADC, Multiplexer, Voltage Reference
Output Fan Yes
Output Type I2C
Sensor Type Internal and External
Output Alarm Yes
Mounting Type Surface Mount
Package / Case 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Voltage - Supply 2.9V ~ 5.5V
Operating Temperature -40degC ~ 85degC
Supplier Device Package 10-MSOP

Getting Started

There is no vendor 'development kit' required to use the LTC2990; connect the device to your system I2C bus, power it between 2.9 V and 5.5 V, and add the appropriate shunt or sense resistors for current measurement. Consult the LTC2990 datasheet and application notes for register map, recommended input protection and recommended PCB layout for accurate measurements. Use a microcontroller or SBC with I2C and a firmware driver to read measurement registers and configure alarms; verify pull-ups and I2C addressing on your bus.

Also Consider

INA219 TITexas Instruments - Simple, low-cost I2C current shunt and bus voltage monitor suitable for single-rail current and power measurements in space-constrained designs.