DS2746 Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs www.
maxim-ic.
com GENERAL DESCRIPTION The DS2746 provides system-side battery capacity monitoring in cost-sensitive applications.
Voltage, bidirectional current, and accumulated current measurement data is provided to the host processor over a 2-wire interface.
Offset bias and offset blanking features greatly enhance the accuracy of the coulomb counter.
In addition, the DS2746 has two auxiliary A/D inputs to sample the pack identification resistor, thermistor, or other voltage source.
The results are reported as a ratiometric fraction of the supply voltage eliminating error related to the supply.
The DS2746 reduces the total ...

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