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ADS1291IRSMT Datasheet(PDF) 5 Page - Texas Instruments

Part # ADS1291IRSMT
Description  ADS129x Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements
PDF  83 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

ADS1291IRSMT Datasheet(HTML) 5 Page - Texas Instruments

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ADS1291, ADS1292, ADS1292R
www.ti.com
SBAS502C – DECEMBER 2011 – REVISED APRIL 2020
Product Folder Links: ADS1291 ADS1292 ADS1292R
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Copyright © 2011–2020, Texas Instruments Incorporated
Pin Functions (continued)
PIN
FUNCTION
DESCRIPTION
NO.
PBS (TQFP)
RSM (VQFN)
20
SCLK
SCLK
Digital input
SPI clock
21
DOUT
DOUT
Digital output
SPI data out
22
DRDY
DRDY
Digital output
Data ready; active low
23
DVDD
DVDD
Supply
Digital power supply
24
DGND
DGND
Supply
Digital ground
25
GPIO2/RCLK2
GPIO2/RCLK2
Digital
input/output
General-purpose I/O 2 or resp clock 2 (ADS1292R)
26
GPIO1/RCLK1
GPIO1/RCLK1
Digital
input/output
General-purpose I/O 1 or resp clock 1 (ADS1292R)
27
VCAP2
VCAP2
—
Analog bypass capacitor
28
RLDINV
RLDINV
Analog input
Right leg drive inverting input; connect to AVDD if not used
29
RLDIN/
RLDREF
RLDIN/
RLDREF
Analog input
Right leg drive input to MUX or RLD amplifier noninverting input; connect to AVDD if not
used
30
RLDOUT
RLDOUT
Analog output
Right leg drive output
31
RESP_MODP/
IN3P(1)
RESP_MODP/
IN3P(1)
Analog
output/input
P-side respiration excitation signal for respiration (analog output) or auxiliary input 3P
(analog input)
32
RESP_MODN/
IN3N(1)
RESP_MODN/
IN3N(1)
Analog
output/input
N-side respiration excitation signal for respiration (analog output) or auxiliary input 3N
(analog input)
Power Pad
—
Pad
—
Thermal pad; must be connected to AVSS



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