Datasheet

0.1
1
10
100
20 10020 20020 30020 40020
Settling Time − ns
+VA − Supply Current − mA
ADS8327
ADS8328
www.ti.com SLAS415E – APRIL 2006– REVISED JANUARY 2011
Power-Down Modes
The ADS8327/28 has a comprehensive built-in power-down feature. There are three power-down modes: Deep
power-down mode, Nap power-down mode, and auto nap power-down mode. All three power-down modes are
enabled by setting the related CFR bits. The first two power-down modes are activated when enabled. A wakeup
command, 1011b, can resume device operation from a power-down mode. Auto nap power-down mode works
slightly different. When the converter is enabled in auto nap power-down mode, an end of conversion instance
(EOC) puts the device into auto nap power-down. The beginning of sampling resumes operation of the converter.
The contents of the configuration register is not affected by any of the power-down modes. Any ongoing
conversion when nap or deep power-down is activated is aborted.
Figure 55. Typical Analog Supply Current Drop versus Time After Power-Down
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Product Folder Link(s): ADS8327 ADS8328