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ADS1294CZXGR Datasheet(PDF) 97 Page - Texas Instruments

Part # ADS1294CZXGR
Description  ADS129x Low-Power, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements
PDF  114 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

ADS1294CZXGR Datasheet(HTML) 97 Page - Texas Instruments

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ADS1298
0.1 F
m
1 F
m
AVDD
AVDD1
0.1 F
m
1 F
m
-1.5V
AVSS
AVSS1
DGND
DVDD
+1.5V
+1.8V
0.1 F
m
1 F
m
VCAP1
VCAP2
VCAP3
0.1 F
m
VREFP
VREFN
10 F
m
VCAP4
WCT
1 F
m
1 F
m
1nF
1 F
m
-1.5V
22 F
m
0.1 F
m
RESV1
ADS1298
AVDD
0.1 F
m
1 F
m
+3V
AVDD1
AVSS
AVSS1
DGND
DVDD
+1.8V
0.1 F
m
1 F
m
0.1 F
m
VREFP
VREFN
VCAP1
VCAP2
VCAP3
VCAP4
WCT
1nF
1 F
m
1 F
m
1 F
m
10 F
m
22 F
m
0.1 F
m
RESV1
ADS1294, ADS1294R, ADS1296, ADS1296R, ADS1298, ADS1298R
www.ti.com
SBAS459K – JANUARY 2010 – REVISED AUGUST 2015
11.2 Connecting to Unipolar (3 V or 1.8 V) Supplies
Figure 106 illustrates the ADS129x connected to a unipolar supply. In this example, analog supply (AVDD) is
referenced to analog ground (AVSS) and digital supplies (DVDD) are referenced to digital ground (DGND).
NOTE: Place the capacitors for supply, reference, WCT, and VCAP1 to VCAP4 as close to the package as possible.
Figure 106. Single-Supply Operation
11.3 Connecting to Bipolar (±1.5 V or ±1.8 V) Supplies
Figure 107 illustrates the ADS129x connected to a bipolar supply. In this example, the analog supplies connect
to the device analog supply (AVDD). This supply is referenced to the device analog return (AVSS), and the
digital supply (DVDD) is referenced to the device digital ground return (DGND).
NOTE: Place the capacitors for supply, reference, WCT, and VCAP1 to VCAP4 as close to the package as possible.
Figure 107. Bipolar Supply Operation
Copyright © 2010–2015, Texas Instruments Incorporated
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Product Folder Links: ADS1294 ADS1294R ADS1296 ADS1296R ADS1298 ADS1298R



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