XE8000EV120 Semtech, XE8000EV120 Datasheet - Page 14
XE8000EV120
Manufacturer Part Number
XE8000EV120
Description
BOARD EVAL FOR SX8722I070TRLF
Manufacturer
Semtech
Series
ZoomingADC™r
Specifications of XE8000EV120
Number Of Adc's
1
Number Of Bits
16
Data Interface
I²C
Inputs Per Adc
7 Single or 4 Differential
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 125°C
Utilized Ic / Part
SX8722
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
XM8000EV120
XM8000EV120
XM8000EV120
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4.2. Time specification without the 32.768 kHz Xtal
The internal SX8722 RC oscillator accuracy depends on technology tolerance. It can reach ± 50% difference from one chip
to another
In this case, and if no calibration is done, the RC clock is centred around 1.2 MHz.
SX8722 timing values without Xtal can thus differ of ± 50% to these with a Xtal.
4.3. Start-up time with the 32.768 kHz Xtal presence
The mean time of EEPROM loading at the start-up is typically 140 ms if configuration data are saved in.
In this case SX8722 will provide the first sample after typically 180ms.
4.4. Changing power mode by pin signal
(1) instantaneous
ACS - Revision 4.2
©2008 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
SX8722
power- on
EEPROM
loading
Sample
available
Figure 3. Start-up timing diagram with EEPROM loading
time before EEPROM
loading: 7.5 [ms]
Table 2. Power mode changing timings by pin setting
October 2008
ACTIVE
SLEEP
SHUT
To
inst. (1)
SHUT
Page 14
SLEEP
inst. (1)
640ms
High gain acquisition for sensor interface
From
time after EEPROM
loading: 140 [ms]
ACTIVE
650ms
660ms
time to have the first
sample: 180 [ms]
t
t
t
DATASHEET
www.semtech.com
SX8722
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