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REF3125AIDBZ Datasheet(PDF) 7 Page - Texas Instruments

Part # REF3125AIDBZ
Description  Contains all support circuitry needed for the ADS1174/ADS1274
PDF  48 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

REF3125AIDBZ Datasheet(HTML) 7 Page - Texas Instruments

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Voltage Reference
www.ti.com
Voltage Reference
Figure 3. Connectors J15, J16
The ADS1274EVM has three sources for the reference voltage. Jumper J1 can select the voltage from
either the REF3125(U1) or REF5025(U2). The reference from either source is filtered and buffered by
U3A. Switch S1 chooses either the onboard reference or the external reference voltage that is connected
to the reference pins of J9. Figure 4 illustrates the pinout for connector J1. Figure 5 shows switch S1 as it
appears on the EVM.
Figure 4. Connector J1
Figure 5. Switch S1
SBAU134A – August 2008 – Revised May 2009
ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK
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