ADS1291_14 Datasheet, PDF (18/75 Pages) Texas Instruments – Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements

ADS1291
ADS1292
ADS1292R
SBAS502B – DECEMBER 2011 – REVISED SEPTEMBER 2012
www.ti.com
IN2P
IN2N
RLDIN/
RLDREF
IN1P
IN1N
TESTP
INT_TEST
TEMPP
MVDDP
From LOFFP
EMI
Filter
From LOFFN
RLD_REF
MVDDN
TESTM
TEMPN
INT_TEST
TESTP
INT_TEST
TEMPP
MVDDP
From LOFFP
EMI
Filter
RESP
MOD
From LOFFN
RLD_REF
MVDDN
TESTM
TEMPN
INT_TEST
MUX1[3:0] = 0101
MUX1[3:0] = 0100
MUX1[3:0] = 0011
MUX1[3:0] = 0000
MUX1[3:0] = 0110 or
MUX1[3:0] = 1000
MUX1[3:0] = 0111 or
MUX1[3:0] = 1000
MUX1[3:0] = 0000
MUX1[3:0] = 0010
MUX1[3:0] = 0011
MUX1[3:0] = 0100
MUX1[3:0] = 0101
MUX1[3:0] = 0101
MUX1[3:0] = 0100
MUX1[3:0] = 0011
MUX1[3:0] = 0000
MUX1[3:0] = 0111 or
MUX1[3:0] = 1000
MUX1[3:0] = 0110 or
MUX1[3:0] = 1000
MUX1[3:0] = 0000
MUX1[3:0] = 0010
MUX1[3:0] = 0011
MUX1[3:0] = 0100
MUX1[3:0] = 0101
Device
MUX1[3:0] = 0010
To PGA2_INP
MUX1[3:0] = 0001
MUX1[3:0] = 0001
VREFP + VREFN
2
To PGA2_INN
MUX1[3:0] = 1001
MUX1[3:0] = 1001
MUX1[3:0] = 0010
MUX1[3:0] = 1001
To PGA1_INP
MUX1[3:0] = 0001
VREFP + VREFN
2
MUX1[3:0] = 0001
To PGA1_INN
MUX1[3:0] = 1001
RESP_MODP/IN3P
RESP_MODN/IN3N
NOTE: MVDD monitor voltage supply depends on channel number; see the Supply Measurements (MVDDP, MVDDN) section.
Figure 19. Input Multiplexer Block for Both Channels
18
Submit Documentation Feedback
Copyright © 2011–2012, Texas Instruments Incorporated
Product Folder Links: ADS1291 ADS1292 ADS1292R