參數(shù)資料
型號(hào): XE8000EV121
廠商: Semtech
文件頁(yè)數(shù): 16/53頁(yè)
文件大?。?/td> 0K
描述: BOARD EVAL FOR SX8723/24
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,傳感器至模數(shù)轉(zhuǎn)換器接口,可編程
嵌入式:
已用 IC / 零件: SX8723,SX8724,SX8725
主要屬性: 用于橋型傳感器的信號(hào)調(diào)節(jié)
次要屬性: GUI,最多 16 位,1/12 ~ 1000 可編程增益,I2C 接口
已供物品: 板,CD
產(chǎn)品目錄頁(yè)面: 585 (CN2011-ZH PDF)
相關(guān)產(chǎn)品: SX8725E083DKR-ND - IC DAS PRESSURE/TEMP SENS 12MLPD
SX8724E082DKR-ND - IC DAS PRESSURE/TEMP SENS 16MLPQ
SX8725E083CT-ND - IC DAS PRESSURE/TEMP SENS 12MLPD
SX8724E082CT-ND - IC DAS PRESSURE/TEMP SENS 16MLPQ
SX8725E083TR-ND - IC DAS PRESSURE/TEMP SENS 12MLPD
SX8724E082TR-ND - IC DAS PRESSURE/TEMP SENS 16MLPQ
ADVANCED COMMUNICATIONS & SENSING
V1.23 2009 Semtech Corp.
www.semtech.com
23
SX8724
ZoomingADC for Pressure and Temperature Sensing
Over-Sampling Ratio
The over-sampling ratio (OSR) defines the number of integration cycles per elementary conversion. Its value is
set with the word SET_OSR[2:0] in power of 2 steps (see Table 11) given by:
[ ]
0
:
2
_
3
2
OSR
SET
OSR
+
=
Equation 13
SET_OSR[2:0]
(RegACCfg0[4:2])
Over-Sampling Ratio
OSR (-)
000
8
001
16
010
32
011
64
100
128
101
256
110
512
111
1024
Table 11 - Over-Sampling Ratio Settings
Elementary Conversions
As mentioned previously, the whole conversion sequence is made of a set of NELCONV elementary incremental
conversions. This number is set with the word SET_NELC[1:0] in power of 2 steps (see Table 12) given by:
[ ]
0
:
1
_
2
NELC
SET
ELCONV
N
=
Equation 14
SET_NELC[1:0]
(RegACCfg0[6:5])
# of Elementary
Conversions
NELCONV (-)
00
1
01
2
10
4
11
8
Table 12 - Number of Elementary Conversion Settings
As already mentioned, NELCONV must be equal or greater than 2 to reduce internal amplifier offsets.
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