參數(shù)資料
型號(hào): SX8722I070TRLF
廠商: Semtech
文件頁(yè)數(shù): 15/108頁(yè)
文件大小: 0K
描述: IC ZOOMING ADC 10BIT 16CH 44MLPQ
標(biāo)準(zhǔn)包裝: 1
類型: 壓力傳感器
輸入類型: 邏輯
輸出類型: 邏輯
接口: I²C
電流 - 電源: 300µA
安裝類型: 表面貼裝
封裝/外殼: 44-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 44-MLPQ(7x7)
包裝: 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁(yè)面: 585 (CN2011-ZH PDF)
配用: XE8000EV120-ND - BOARD EVAL FOR SX8722I070TRLF
其它名稱: SX8722I070LFDKR
ACS - Revision 4.2
October 2008
2008 Semtech Corp.
www.semtech.com
Page 14
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8722
High gain acquisition for sensor interface
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.
Figure 3. Start-up timing diagram with EEPROM loading
4.4. Changing power mode by pin signal
Table 2. Power mode changing timings by pin setting
(1) instantaneous
To
From
SHUT
SLEEP
ACTIVE
SHUT
640ms
650ms
SLEEP
660ms
ACTIVE
inst. (1)
SX8722
power- on
Sample
available
time before EEPROM
loading: 7.5 [ms]
time after EEPROM
loading: 140 [ms]
EEPROM
loading
t
time to have the first
sample: 180 [ms]
Not
Recommended
for
New
Designs
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