Using the Software: ADS1299 Control Registers and GUI
Figure 19. Register Bit for SRB1 Routing
5.3.1
Internal Test Signals Input
Configuration Register 2 controls the signal amplitude and frequency of an internally-generated square
wave test signals. The primary purpose of this test signal is to verify the functionality of the front-end MUX,
the PGA, and the ADC. The test signals may be viewed on the Analysis
→
Scope tab, as
shows.
Detailed instructions for using the Analysis
→
Scope tab is provided in
.
Figure 20. Internal Test Signals
5.3.2
Temperature Sensor and the Scope Tab
The internal temperature sensor on the ADS1299 is shown in . When the internal MUX is routed to the
temperature sensor input, the output voltage of the ADC may be converted to a temperature value, using
.
(1)
21
SLAU443 – May 2012
EEG Front-End Performance Demonstration Kit
Copyright © 2012, Texas Instruments Incorporated
