- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄11652 > SX8724E082TRT (Semtech)IC DAS PRESSURE/TEMP SENS 16MLPQ PDF資料下載
參數(shù)資料
| 型號(hào)： | SX8724E082TRT |
| 廠商： | Semtech |
| 文件頁(yè)數(shù)： | 14/53頁(yè) |
| 文件大小： | 0K |
| 描述： | IC DAS PRESSURE/TEMP SENS 16MLPQ |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | ZoomingADC™ |
| 類型： | 數(shù)據(jù)采集系統(tǒng)（DAS） |
| 輸入類型： | 差分 |
| 輸出類型： | 數(shù)字 |
| 接口： | I²C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 16-MLPQ（4x4） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 配用： | XE8000EV121-ND - BOARD EVAL FOR SX8723/24 |
| 其它名稱： | SX8724E082DKR |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)當(dāng)前第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)
ADVANCED COMMUNICATIONS & SENSING
V1.23 2009 Semtech Corp.
www.semtech.com
21
SX8724
ZoomingADC for Pressure and Temperature Sensing
PGA & ADC Enabling
Depending on the application objectives, the user may enable or bypass each PGA stage. This is done
according to the word ENABLE and the coding given in Table 4. To reduce power dissipation, the ADC can also
be inactivated while idle.
PGA1
The first stage can have a buffer function (unity gain) or provide a gain of 10 (see Table 5). The voltage VD1 at
the output of PGA1 is:
IN
D
V
GD
V
=
1
(V)
Equation 5
where GD1 is the gain of PGA1 (in V/V) controlled with the bit PGA1_GAIN.
PGA2
The second PGA has a finer gain and offset tuning capability, as shown in Table 6 and Table 7. The voltage VD2
at the output of PGA2 is given by:
ADC
REF
D
V
GDoff
V
GD
V
,
2
1
2
=
(V)
Equation 6
where GD2 and GDoff2 are respectively the gain and offset of PGA2 (in V/V). These are controlled with the
words PGA2_GAIN[1:0] and PGA2_OFFSET[3:0].
PGA3
The finest gain and offset tuning is performed with the third and last PGA stage, according to the coding of
Table 8 and Table 9. The output of PGA3 is also the input of the ADC. Thus, similarly to PGA2, we find that the
voltage entering the ADC is given by:
ADC
REF
D
ADC
IN
V
GDoff
V
GD
V
,
3
2
3
,
=
(V)
Equation 7
where GD3 and GDoff3 are respectively the gain and offset of PGA3 (in V/V). The control words are
PGA3_GAIN[6:0] and PGA3_OFFSET[6:0]. To remain within the signal compliance of the PGA stages, the
condition:
DD
D
V
<
2
1 ,
(V)
Equation 8
must be verified.
Finally, combining equations 5 to 7 for the three PGA stages, the input voltage VIN,ADC of the ADC is related to
VIN by:
ADC
REF
TOT
IN
TOT
ADC
IN
V
GDoff
V
GD
V
,
=
(V)
Equation 9
where the total PGA gain is defined as:
1
2
3
GD
TOT
=
(V/V)
Equation 10
and the total PGA offset is:
2
3
GDoff
GD
GDoff
TOT
+
=
(V/V)
Equation 11
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MCF5211CAE66 | IC MCU 128K FLASH 66MHZ 64-LQFP |
| SX8723E083TRT | IC DAS PRESSURE/TEMP SENS 12MLPD |
| MC9S12XA512CAA | IC MCU 512K FLASH 80-QFP |
| A5367CA | IC SMOKE DETECTOR ION 16-DIP |
| A5366CA-T | IC SMOKE DETECTOR PHOTO 16-DIP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SX8724EVK | 制造商:Semtech Corporation 功能描述:Evaluation Board for SX8724E082TRT Data Acquisition System |
| SX8724S | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:ZoomingADC for sensing data acquisition |
| SX8724SEVK | 制造商:Semtech Corporation 功能描述: 制造商:Semtech Corporation 功能描述:Evaluation Kit for SX8724S |
| SX8724SWLTDT | 制造商:Semtech Corporation 功能描述:3 INPUTS ZOOMING ADC WITH SPI |
| SX8725 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:ZoomingADC? for Pressure and Temperature Sensing |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。