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參數(shù)資料
| 型號(hào)： | SX8725E083TRT |
| 廠商： | Semtech |
| 文件頁(yè)數(shù)： | 25/53頁(yè) |
| 文件大小： | 0K |
| 描述： | IC DAS PRESSURE/TEMP SENS 12MLPD |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | ZoomingADC™ |
| 類(lèi)型： | 數(shù)據(jù)采集系統(tǒng)（DAS） |
| 輸入類(lèi)型： | 差分 |
| 輸出類(lèi)型： | 數(shù)字 |
| 接口： | I²C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 12-WFDFN 裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 12-MLPD |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 配用： | XE8000EV121-ND - BOARD EVAL FOR SX8723/24 |
| 其它名稱(chēng)： | SX8725E083DKR |
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ADVANCED COMMUNICATIONS & SENSING
V1.8 2009 Semtech Corp.
www.semtech.com
31
SX8725
ZoomingADC for Pressure and Temperature Sensing
Mode Register
Bit
Name
Mode
Reset
Function
7
MULT_READY
r
1
1: Indicates that the charge pump has settled and the output voltage is
sufficient for conversion
6
MULT_ACTIVE
r
0
1: Indicates that the charge pump is running (either because VBATT<3V
or it has been forced on)
5:4
CHOP
rw
00
VREF chopping control
11: Chop at Nelconv/2 rate
10: Chop at Nelconv rate
01: Chop state = 1
00: Chop state = 0
(Note 1)
3
MULT_FORCE_ON
rw
0
Force charge pump On (takes priority) (Note 2)
2
MULT_FORCE_OFF
rw
1
Force charge pump Off (Note 2)
1
VREF_D0_OUT
rw
0
Enable VREF output on D0 pin
0
VREF_D1_IN
rw
0
Enable VREF input on D1 pin
Note1:
The chop control is to allow chopping of the internal bandgap reference. This may be useful to help eliminate bandgap
related internal offset voltage and 1/f noise. The bandgap chop state may be forced High or Low, or may be set to toggle
during conversion at either the same rate or half the rate of the Elementary Conversion. (See Conversion Sequence in the
ZoomingADC description)
Note2:
The internal charge pump may be forced On or Off to avoid conversion interruptions due to the pump switching off and on
when the VBATT supply is near 3V. If the pump is on automatic, then it will activate when VBATT drops below 3V to ensure
sufficient supply to the ADC. If the ADC is not being run at full rate or full accuracy then it may operate sufficiently well
when VBATT is less than 3V.
Table 29 - RegMode (0x70)
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