SLAU443 Datasheet, PDF (24/68 Pages) Texas Instruments – EEG Front-End Performance Demonstration Kit

Using the Software: ADS1299 Control Registers and GUI
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5.5.1 Lead-Off Sense (LOFF_SENSP and LOFF_SENSN) Registers
These registers enable lead-off detection for both the positive and negative channels. Figure 24 describes
the 4-bit DAC settings to configure the lead-off threshold. Note that the LOFF_FLIPx bits change the
direction of the lead-off current if this option is selected. Figure 24 illustrates the connections from the
positive and negative inputs to the lead-off comparators. Figure 25 shows the respective GUI panel on the
EVM software.
Figure 24. LOFF_STATP and LOFF_STATN Comparators
Figure 25. LOFF_SENSP and LOFF_SENSN Registers GUI Panel
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EEG Front-End Performance Demonstration Kit
Copyright © 2012, Texas Instruments Incorporated
SLAU443 – May 2012
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