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dc1496fa
DEMO MANUAL DC1496B
count, while the low thresholds are rounded up to nearest
higher count. Switching back and forth between Hex and
Unit can be used as a conversion tool.
The LSB value for the 16-bit ACR and charge thresholds
is displayed on the bottom. This value is adjusted with the
sense resistor and pre-scaler M. The units are in mAh or
mC depending on the selected ACR display. Shown for the
LTC2942/LTC2942-1 is the LSB for the 14-bit voltage ADC,
10-bit temperature ADC, and 8-bit high and low thresholds
for voltage and temperature.
Calculator Tool
A calculator tool is available in the tool bar options under
Tools. In this calculator (Figure 4), enter the maximum cur-
rent passed through the sense and the maximum battery
capacity. Click on Calculate to calculate a recommended
sense resistor and pre-scaler (M) value. The display shows
the battery capacity in comparison to ACR full scale and
provides an LSB value in mAh. Also shown is the recom-
mended equation to use to determine an appropriate sense
resistor as a function of the maximum battery charge and
maximum current.
Figure 4. LTC2941/LTC2942 Pre-Scaler and Sense Resistor Calculator
QuikEval INTERFACE
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