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DS2740 - Maxim Integrated

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DS2740 High-Precision Coulomb Counter

. PIN DESCRIPTION OVD- 1-Wire Bus Speed Select PIO - Programmable I/O Pin SNS - Sense Resistor Input IS2 - Current-Sense Input IS1 - Current-Sense Input VSS - Device Ground, Current-Sense Resistor Return DQ - Data Input/Output VDD - Power-Supply Input (2.7V to 5.5V) 1-Wire is a registered trademark of Dallas Semiconductor. 1 of 16 051805 Table 1. ORDERI.

Features

ƒ 15-Bit Bidirectional Current Measurement (DS2740U) ƒ 1.56μV LSB and ±51.2mV Dynamic Range ƒ 78μA LSB and ±2.56A Dynamic Range with External 20mΩ Sense Resistor (RSNS) ƒ 156μA LSB and ±5.12A Dynamic Range with External 10mΩ Sense Resistor (RSNS) ƒ 13-Bit Bidirectional Current Measurement (DS2740BU) ƒ 6.25μV LSB and ±51.2mV Dynamic Range ƒ 312μA LSB and ±2.56A Dynamic Range with External 20mΩ Sense Resistor (RSNS) ƒ 625μA LSB and ±5.12A Dynamic Range with External 10mΩ Sense Resistor (RSNS) ƒ Analog Input Filter (IS1, IS2) Extends Dynamic Range for Pulse-Load Applications ƒ Current Accumulatio.

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