ADS1291_14 Datasheet, PDF (65/75 Pages) Texas Instruments – Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements

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ADS1291
ADS1292
ADS1292R
SBAS502B – DECEMBER 2011 – REVISED SEPTEMBER 2012
Changes from Original (December 2011) to Revision A
Page
• Changed device graphic ....................................................................................................................................................... 1
• Changed device status from Mixed Status to Production Data ............................................................................................ 1
• Changed second Features bullet .......................................................................................................................................... 1
• Updated Family and Ordering Information table ................................................................................................................... 2
• Moved ADS1292R to production status ................................................................................................................................ 2
• Deleted footnote 2 from Family and Ordering Information table .......................................................................................... 2
• Changed values of AVDD to AVSS and DVDD to DGND rows in Absolute Maximum Ratings table .................................. 2
• Changed Operating temperature range parameter in Absolute Maximum Ratings table ..................................................... 2
• Changed DC Channel Performance, INL parameter test conditions in Electrical Characteristics table .............................. 3
• Changed AC Channel Performance, SNR and THD parameters test conditions in Electrical Characteristics table ........... 3
• Added third Channel Performance, THD parameter row to Electrical Characteristics table ................................................ 3
• Added Digital Filter section to Electrical Characteristics table .............................................................................................. 4
• Deleted Right Leg Drive Amplifier, Quiescent power consumption parameter test condition from Electrical
Characteristics table ............................................................................................................................................................. 4
• Changed Respiration, Impedance measurement noise parameter test conditions in Electrical Characteristics table ......... 4
• Changed Respiration, Maximum modulator current parameter in Electrical Characteristics table ...................................... 4
• Changed Power-Supply Requirements, Digital supply parameter in Electrical Characteristics table .................................. 5
• Changed first I_DVDD Supply Current, Normal mode parameter test conditions in Electrical Characteristics table ................ 6
• Changed 3-V Power Dissipation, Quiescent power dissipation, per channel parameter typical specifications in
Electrical Characteristics table .............................................................................................................................................. 6
• Added C_FILTER to Typical Characteristics conditions ........................................................................................................... 13
• Updated Figure 5 ................................................................................................................................................................ 13
• Updated Figure 9 and Figure 12 ......................................................................................................................................... 13
• Added C_FILTER to Typical Characteristics conditions ........................................................................................................... 14
• Added C_FILTER to Typical Characteristics conditions ........................................................................................................... 15
• Changed description of CHnSET setting in Supply Measurements (MVDDP, MVDDN) section ....................................... 19
• Changed second paragraph of PGA Settings and Input Range section ............................................................................ 21
• Changed description of PD_REFBUF bit in the Reference section ................................................................................... 25
• Updated second column title in Table 9 ............................................................................................................................. 27
• Updated Figure 41 .............................................................................................................................................................. 34
• Updated description of DOUT and DRDY in RDATAC: Read Data Continuous section ................................................... 36
• Updated RLD_STAT in address 08h of Table 14 ............................................................................................................... 39
• Changed description of bit 1 in CONFIG2: Configuration Register 2 ................................................................................. 41
• Changed descriptions of bits[3:0] in CH2SET: Channel 2 Settings .................................................................................... 44
• Updated Figure 54 .............................................................................................................................................................. 57
• Added description of Figure 55, Figure 55, and Table 16 to Internal Respiration Circuitry with External Clock
(ADS1292R) section ........................................................................................................................................................... 58
• Added ADS1292R Application section ............................................................................................................................... 58
• Updated Figure 58 and Figure 59 ....................................................................................................................................... 59
• Updated Figure 60 and added footnote 1 ........................................................................................................................... 60
• Updated Figure 61 and added footnote 1 ........................................................................................................................... 61
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