ADS1298ECG-FE/ADS1198ECG-FE Hardware Details
40
SBAU171D – May 2010 – Revised January 2016
Copyright © 2010–2016, Texas Instruments Incorporated
ADS1298ECG-FE/ADS1198ECG-FE
5.7.1
Patient Simulator Input
The output from any typical patient simulator can be directly fed into the DB15 connector (J1). For all
measurements in this user guide, a Fluke medSim 300B simulator was used as the ECG signal source
(
) . The simulator is capable of generating ECG signals down to 50µV of amplitude. Particular
attention must be given to the common-mode value of the input signal for proper data capture. Refer to
the
or
for the common-mode range for various
programmable gain amplifier (PGA) gain settings.
explains the process used to capture 12-
lead ECG data.
Figure 37. Fluke Simulator Configuration
5.7.2
Arbitrary Input Signals
Arbitrary input signals can be connected to the ADS1298 by bypassing the DB15 connector and feeding
the signal directly at jumpers JP26-JP33. This requires the removal of the 16 jumpers at JP26-JP33. The
input signal must be connected differentially since each ADC channel input is differential. If it is desired to
connect single-ended signals, bias the negative input of the channels to a mid-supply voltage.
NOTE:
Ensure that the single-ended signal has an offset equal to the voltage supplied at the
negative input of the channel.