Datasheet

DRDY/DOUT
SCLK
STARTTiedHigh
SCLK
STARTTiedHigh
STARTTiedHigh
23 22 21 0
MSB LSB
1 24
DRDY/DOUT 23 22 21 0
1 24 25
DRDY/DOUT
SCLK
DataReady
AfterCalibration
23 22 21 0
1 24 25 26
BeginCalibration
(a)DataRetrieval
(b)DataRetrievalwith /DOUTForcedHighAfterwards
DRDY
(c)Self-Calibration
(d)SingleConversionswithSTARTPulse
DRDY/DOUT
START
SCLK
22 21 20
23
1
ADS1225
ADS1226
SBAS346C – MAY 2006 – REVISED JANUARY 2009 ....................................................................................................................................................... www.ti.com
Figure 34. Summary of Serial Interface Waveforms
Table 7. Digital Pin Operations
INPUT
DIGITAL PIN PIN NO. 0 1
START 1 Shutdown Mode Start Conversion
BUFEN 4 Buffer Off Buffer On
MUX (ADS1226 only) 5 AINP1 – AINN1 Input AINP2 – AINN2 Input
TEMPEN 6 Temperature Sensor Off Temperature Sensor On
MODE 7 High-Resolution Mode High-Speed Mode
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Product Folder Link(s): ADS1225 ADS1226