LTC Announces Power and Energy Monitor


LTC Power and Energy Monitor

David Manners wrote an article for Electronics Weekly talking about how Linear Tech has a new power and energy monitor. This Monitor is for 0V to 15C DC supply rails.

The LTC2947 has a sense resistor that integrates a 300µO temperature. By doing this, the LTC2947 provides users with a 24mm2 which can allow for a 1.2% accurate energy reading. Here is what else Manners says about the monitors.

“When measuring a full-scale current of 30A, the voltage drop over the LTC2947’s integrated sense resistor is only about 9mV, causing power dissipation of approximately a quarter watt or about 10mW when measuring a 6A rail.

In addition to low power dissipation, the LTC2947 offers high dynamic range due to its low offset of only 6mA (or 1.8µV).

Three integrated ?? ADCs and an internal or external precision time base (crystal or clock) enable accurate measurement of multiple parameters, including current, voltage, power, charge, energy, temperature and time.”

There is an I2C or SPI interface where minimum and maximum values are able to be read through the digital reading. Whenever the measurements exceed the warning threshold, there is an alert that goes off. This alert lets eliminating burdensome polling.

The LTC2947 is offered in a 32 lead 4mm x 6mm QFN package. These start at 1,000 piece at $5.95 each.

Here at Just IT Hardware, an ASAP Semiconductor owned company, we have the resources to supply a vast array of Linear Tech. We offer cost-effective aerospace and electronic component solutions by improving our customers’ negotiation power. If you are interested in getting a quote, please feel free to contact us at sales@justithardware.com or call us at toll free at 1-714-418-5034. We are your source to all your hard to find parts.


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