LTC2947 Datasheet | Linear Technology

LTC2947 30A Power/Energy Monitor with Integrated Sense Resistor Features nn Measures Current, Voltage, Power, Charge, Energy nn ±30A Current Range with Low 9m A Offset nn Integrated 300µΩ Sense Resistor nn 0V to 15V Input Range Independent of Supply Voltage nn Instantaneous Multiplication of Voltage and Current nn 0.5% Voltage Accuracy nn 1% Current and Charge Accuracy nn 1.2% Power and Energy Accuracy nn Alerts When Thresholds Exceeded nn Stores Maximum and Minimum Values nn nn SI2h Cu/Std Po Iw Cnom Mpoadteibwleit Ihnt Ie Qr<fa1ce0μA nn Available in 32-Lead 4mm × 6mm QFN Package APPLICATIONS nn Servers nn Tele Infrastructure nn Industrial nn Electric Vehicles nn Photovoltaics DESCRIPTION The LTC®2947 is a high precision power and energy monitor with an internal sense resistor supporting up to ±30A. Three internal No Latency Δ∑™ ADCs ensure accurate measurement of voltage and current, while high-bandwidth analog multiplication of voltage and current provides accurate power measurement in a wide range of applications. Internal or external clocking options enable precise charge and energy measurements. An internal 300µΩ, temperature-pensated sense resistor minimizes efficiency loss and external ponents, simplifying energy measurement applications while enabling high accuracy current measurement over the full temperature range. All measured quantities are stored in internal registers accessible via the selectable I2C/SPI interface. The LTC2947 Features programmable high and low thresholds for all measured quantities to reduce digital traffic with the host. All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. Patents, including 8907703, 8841962. TYPICAL APPLICATION 0V TO 15V IP 300µΩ IM - 30A TO 30A 5V AVCC 1µF AGND DVCC LTC2947 1µF DGND CFP 1µF CFM BYP 1µF AD1 AD0 CLKI OVDD SCL SDI SDO ALERT CLKO LOAD 5V SDI SDA I2C INTERFACE 2947 TA01a TUE (%) Energy Measurement Total...