AD4080BBCZ datasheet(61/95 Pages) AD

tên linh kiện	AD4080BBCZ

Giải thích chi tiết về linh kiện	20-Bit, 40 MSPS, Differential SAR ADC

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61 / 95 page

Data Sheet

AD4080

DIGITAL FEATURES

analog.com

Rev. 0 | 61 of 95

Event Triggered Capture, Read Latest

WATERMARK

Event triggered (read latest) mode is used where there is interest

only in the ADC data after an event occurs. This event can be

an internally generated event, where the AD4080 is running contin-

uously, and the threshold detection is enabled to trigger an event

as soon as an ADC input threshold is crossed. Or, the user can

be independently monitoring the system or ADC input for an event,

and an external event trigger is user-issued via a configured GPIO.

As in all cases of arming the FIFO, the first rising edge after

a FIFO_MODE write command arms the FIFO for data capture;

however, no data is written to the FIFO until an event of the

selected method occurs.

Rearming the trigger involves a similar process to the immediate

mode rearming. The FIFO is firstly disabled by writing 00 to the

FIFO_MODE bits before, and then rearmed by again enabling the

required capture mode.

Figure 90. Event Triggered Capture, Read Latest WATERMARK Arming

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