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PD

SDO

BUSY

Valid Data

td16

REFOUT

tw4

td10

td18

Invalid Data

1

2

3

td11

td17

Full ICC

Full ICC

ICC PD

ICC

PD

SDO

BUSY

1

2

3

Full ICC

Full ICC

tw4

td10

Valid Data

Invalid Data

td11

tacq1

ICC

ICC PD

td16

td18

NAP MODE

ADS8370

SLAS450 – JUNE 2005

Figure 53. Device Full Power Down/Resume (Internal Refernce Used)

Figure 54. Device Full Power Down/Resume (External Reference Used)

Nap mode is automatically inserted at the end of a conversion if CONVST_QUAL is held low at EOC. The

device can be operated in nap mode at the end of every conversion for saving power at lower throughputs.

Another way to use this mode is to convert multiple times and then enter nap mode. The minimum sampling

time after a nap state is tacq1 + td18 = tacq2.

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