www.ti.com
EVM Operation
8.3
Default Jumper Settings and Switch Positions
Jumpers connect the power supplies and enable PGA280 control of the ADS1259. J1, J2, J3, and J4 are
all set to the left and connect the PGA280 to ADS1259. All the jumpers on J6 and J10 are used to connect
power supplies and grounds. J15 is used to short the inputs together during an offset calibration.
shows the jumpers found on the EVM and the respective factory default conditions for each.
Figure 7. ADS1259EVM Default Jumper Positions
Four switches are used on the ADS1259/PGA280. Three-way switch S1 is set to the center position,
setting the output common-mode of the PGA280 to AVDD/2. Switch S2 is set to the right, connecting the
ADS1259 reference to the EVM onboard reference. Three-way switch S3 is set to the right to allow for
calibration of the ADS1259, through jumper J15. Finally, three-way switch S4 is set to the left connecting
the ADS1259 to the onboard oscillator.
illustrates the switches on the EVM and the respective
factory default configurations for each.
Figure 8. ADS1259EVM Default Switch Positions
11
SBAU163A – March 2010 – Revised April 2010
ADS1259EVM, ADS1259EVM-PDK
Copyright © 2010, Texas Instruments Incorporated
