Number: ADS1292R
Hi
We are using ADS1292R for one channel ECG and one channel Respiration. We got ECG signal on channel 2 but not too sure about the respiration data we got on channel 1.
Following are the register configuration:
ADS1x9xR_Default_Register_Settings[15] = {
//Device ID read Ony
0x73, // Device ID read only
//CONFIG1
0x01, //250 sps @config 1
//CONFIG2
0xE0, //2.42V reference, reference buffer enabled @config2
//LOFF
0x10, // @loff control register
//CH1SET
0x00, //gain 6 normal operation @ch1set
//CH2SET
0x00, //gain 6 normal operation @ch2set
//RLD_SENS
0x2C, //@rld_sens
//LOFF_SENS
0x00, //loff disabled @loff sens
//LOFF_STAT
0x00, //@loff_stat
//RESP1
0xEA, //resp ciruit mod/demod on @resp1
//RESP2
0x03, //@resp2
//GPIO
0x0C
};
The raw code data we get from the ADS is attached
/cfs-file/__key/communityserver-discussions-components-files/73/Code_5F00_value.txt
BPM is set to 20, delta R = 1 ohm, Rb = 500 ohm
Respiration graph plotted in excel is shown above. We have used normal ECG leads and used common RA and common LA and RL (three leads) for ECG and Respiration data.
We also tried the ADS1298R evaluation board and in that we are getting the respiration data properly with the patient simulator with same setting.
The data what We are getting is around 358680 (0x057918) this much and the respiration data in volts should we 15 mV according to application note (Image from application note is added).
- So how this conversion is performed.
- What could be the issue with respiration data we are getting.
