AFE5803 Datasheet, PDF (23/52 Pages) Texas Instruments – Fully Integrated, 8-Channel Ultrasound Analog Front End

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t₁
AFE5803
SLOS763A – JANUARY 2012 – REVISED JANUARY 2012
AVDD
AVDD_5V
AVDD_ADC
t₂
DVDD
t₃
t₄
t₇
t₅
RESET
SEN
t₆
Device Ready for
Serial Register Write
Start of Clock
Device Ready for
Data Conversion
CLKP_ADC
t₈
10 µs < t1 < 50 ms, 10 µs < t2 < 50 ms, –10 ms < t3 < 10 ms, t4 > 10 ms, t5 > 100 ns, t6 > 100 ns, t7 > 10 ms, and
t8 > 100 µs.
The AVDDx and DVDD power-on sequence does not matter as long as –10ms < t3 < 10ms. Similar considerations
apply while shutting down the device.
Figure 59. Recommended Power-up Sequencing and Reset Timing
Copyright © 2012, Texas Instruments Incorporated
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