Datasheet

START
1
ADS1298
1
CLK
DRDY
DRDY
1
START
CLK
START
2
ADS1298
2
CLK
DRDY
DRDY
2
START
CLK
DRDY
1
DRDY
2
ADS1294, ADS1294R
ADS1296, ADS1296R
ADS1298, ADS1298R
www.ti.com SBAS459I –JANUARY 2010–REVISED JANUARY 2012
When using multiple devices, the devices can be synchronized with the START signal. The delay from START to
the DRDY signal is fixed for a fixed data rate (see the START subsection of the SPI Interface section for more
details on the settling times). Figure 44 shows the behavior of two devices when synchronized with the START
signal as an example.
There are two ways to connect multiple devices with a optimal number of interface pins: cascade mode and
daisy-chain mode.
Figure 44. Synchronizing Multiple Converters
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Product Folder Link(s): ADS1294 ADS1294R ADS1296 ADS1296R ADS1298 ADS1298R