Datasheet

www.ti.com
APPLICATION INFORMATION
EXAMPLE DIGITAL STIMULUS
SDO
D17
MSB
2 3 17 18
SCLK
D15D16 D1D2 D0
LSB
SAMPLE CONVERT
BUSY
CONVERT
485 ns
15 ns 15 ns
30 ns 50 ns
25 ns
12.5 ns
DEVICE STATE
CONVST
Frequency = 600 kHz
CS
ADS8380
SLAS387A – NOVEMBER 2004 – REVISED DECEMBER 2004
Table 3. Power Supply Decoupling Capacitor Placement
CONVERTER DIGITAL
SUPPLY PINS CONVERTER ANALOG SIDE
SIDE
Pair of pins requiring a shortest path to
(2,3); (5,6); (15,16); (17,18) (20,21)
decoupling capacitors
Pins requiring no decoupling 4, 14, 19
When using the internal reference, ensure a shortest path from REFOUT (pin 9) to REFIN (pin 8) with the
bypass capacitor directly between pins 8 and 7.
The use of the ADS8380 is very straightforward. The following timing diagram shows one example of how to
achieve a 600-KSPS throughput using a SPI compatible serial interface.
Figure 56. Example Stimulus in SPI Mode (FS =1), Back-To-Back Conversion that Achieves 600 KSPS
26
Submit Documentation Feedback