參數(shù)資料
型號: SX8722I070TRLF
廠商: Semtech
文件頁數(shù): 43/108頁
文件大?。?/td> 0K
描述: IC ZOOMING ADC 10BIT 16CH 44MLPQ
標準包裝: 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
供應商設(shè)備封裝: 44-MLPQ(7x7)
包裝: 標準包裝
產(chǎn)品目錄頁面: 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 4
Section
Page
Table of contents
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8722
High gain acquisition for sensor interface
11.7. Using the SX8722 Stand alone...................................................................................................................... 47
11.7.1. Schematic ............................................................................................................................................... 47
11.8. Frequency calibration process ....................................................................................................................... 48
11.8.1. Overview ................................................................................................................................................. 48
11.8.2. Using an 32.768 kHz XTAL..................................................................................................................... 48
11.8.3. Using a 32.768 kHz External clock source ............................................................................................. 49
11.9. Working below 3 V ......................................................................................................................................... 50
11.9.1. Operating range ...................................................................................................................................... 50
11.9.2. Internal voltage multiplier ........................................................................................................................ 50
11.9.3. Schematic ............................................................................................................................................... 50
12. ZoomingADC ......................................................................................................................................................... 51
12.1. ZoomingADC Features .................................................................................................................................. 51
12.1.1. Overview ................................................................................................................................................. 51
12.2. Acquisition Chain ........................................................................................................................................... 51
12.3. ZoomingADC Detailed block diagram............................................................................................................ 53
12.4. ZoomingADC register map ............................................................................................................................ 54
12.5. ZoomingADC registers table ...................................................................................................................... 56
12.6. Input Multiplexers........................................................................................................................................... 57
12.7. Programmable Gain Amplifiers ...................................................................................................................... 58
12.7.1. PGA & ADC Enabling ............................................................................................................................. 58
12.7.2. PGA1 ...................................................................................................................................................... 58
12.7.3. PGA2 ...................................................................................................................................................... 59
12.7.4. PGA3 ...................................................................................................................................................... 60
12.8. ADC Characteristics....................................................................................................................................... 62
12.8.1. Conversion Sequence............................................................................................................................. 62
12.8.2. Sampling Frequency ............................................................................................................................... 63
12.8.3. Over-Sampling Ratio............................................................................................................................... 63
12.8.4. Elementary Conversions......................................................................................................................... 64
12.8.5. Resolution ............................................................................................................................................... 64
12.8.6. Conversion Time & Throughput .............................................................................................................. 65
12.8.7. Output Code Format ............................................................................................................................... 67
12.9. Power Saving Modes ..................................................................................................................................... 69
12.10. Input impedance............................................................................................................................................ 69
12.11. Switched Capacitor Principle......................................................................................................................... 70
12.12. PGA Settling or Input Channel Modifications ................................................................................................ 71
12.13. PGA Gain & Offset, Linearity and Noise ....................................................................................................... 71
12.14. Power Reduction ........................................................................................................................................... 71
12.15. Noise ............................................................................................................................................................. 72
12.16. Gain Error and Offset Error ........................................................................................................................... 73
Not
Recommended
for
New
Designs
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