參數(shù)資料
型號(hào)： AS1545-BQFT
廠商： AUSTRIAMICROSYSTEMS AG
元件分類： ADC
英文描述： Dual 12-bit, 12-CH, 1Msps; Package Type: TQFN(5x5)-32
封裝： TQFN(5x5)-32
文件頁(yè)數(shù)： 2/34頁(yè)
文件大小： 1587K
代理商： AS1545-BQFT
www.austriamicrosystems.com
Revision 1.01
2 - 34
AS1545
Datasheet
Contents
1 General Description
2 Key Features ........................................................................................................................................................... 1
3 Applications ............................................................................................................................................................. 1
4 Pinout ...................................................................................................................................................................... 3
Pin Assignment .................................................................................................................................................... 3
Pin Description .................................................................................................................................................... 3
5 Absolute Maximum Ratings
.................................................................................................................................... 5
6 Electrical Characteristics ......................................................................................................................................... 6
Timing Characteristics ..................................................................................................................................... 9
7 Typical Operating Characteristics
......................................................................................................................... 10
8 Terminology ........................................................................................................................................................... 15
9 Detailed Description .............................................................................................................................................. 18
Analog Input ....................................................................................................................................................... 18
Acquisition Time ............................................................................................................................................ 18
Analog Input Composition ............................................................................................................................. 19
Analog Input Modes ...................................................................................................................................... 20
Single-Ended Mode ....................................................................................................................................... 21
Fully Differential Mode .................................................................................................................................. 21
Pseudo Differential Mode .............................................................................................................................. 22
Analog-to-Digital Conversion
............................................................................................................................. 23
Output Coding ............................................................................................................................................... 23
Transfer Functions ........................................................................................................................................ 23
Digital Inputs
...................................................................................................................................................... 24
VDRIVE Functionality..................................................................................................................................... 24
10 Application Information
....................................................................................................................................... 25
Operation Modes
............................................................................................................................................... 25
Full Power-Up Mode ..................................................................................................................................... 25
Full Power-Down Mode ................................................................................................................................. 25
Partial Power-Down Mode ............................................................................................................................ 26
Power-Up Times ........................................................................................................................................... 27
Power vs. Throughput Rate .......................................................................................................................... 28
Serial Interface ................................................................................................................................................... 28
Difference calculator and quadrature signals calculator ................................................................................ 29
Direction of the rotor based on DIR bit .......................................................................................................... 30
11 Application Hints .................................................................................................................................................. 31
Grounding and Layout ................................................................................................................................... 31
PCB Design Guidelines for TQFN ................................................................................................................. 31
12 Package Drawings and Markings ........................................................................................................................ 32
13 Ordering Information ........................................................................................................................................... 33
................................................................................................................................................ 1
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