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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 Figure 20 shows.

Detailed instructions for using the Analysis→Scope tab is provided in Section 6.1.1.

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

Equation 1.

(1)

SLAU443–May 2012 EEG Front-End Performance Demonstration Kit

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