AS3930-BTST【PDF 3/32 页】IC ASK RECEIVER 1CH LP 16-TSSOP

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AS3930

Datasheet - C o n t e n t s

Contents

1 General Description ..................................................................................................................................................................

2 Key Features.............................................................................................................................................................................

3 Applications...............................................................................................................................................................................

4 Pin Assignments .......................................................................................................................................................................

4.1 16-pin TSSOP ......................................................................................................................................................................................

1

1

1

4

4

4.1.1 Pin Descriptions........................................................................................................................................................................... 4

4.2 QFN 4x4 16 LD.....................................................................................................................................................................................

5

4.2.1 Pin Descriptions........................................................................................................................................................................... 5

5 Absolute Maximum Ratings ......................................................................................................................................................

6 Electrical Characteristics...........................................................................................................................................................

7 Typical Operating Characteristics .............................................................................................................................................

8 Detailed Description................................................................................................................................................................

8.1 Operating Modes ................................................................................................................................................................................

6

7

9

10

11

8.1.1

8.1.2

8.1.3

8.1.4

Power Down Mode ....................................................................................................................................................................

Listening Mode ..........................................................................................................................................................................

Preamble Detection / Pattern Correlation ..................................................................................................................................

Data Receiving ..........................................................................................................................................................................

11

11

11

12

8.2 System and Block Specification .........................................................................................................................................................

12

8.2.1 Main Logic and SDI ................................................................................................................................................................... 12

8.2.2 Serial Data Interface (SDI)......................................................................................................................................................... 14

8.2.3 SDI Timing ................................................................................................................................................................................. 17

8.3 Channel Amplifier and Frequency Detector........................................................................................................................................

18

8.3.1 Frequency Detector / AGC ........................................................................................................................................................ 18

8.3.2 Antenna Damper........................................................................................................................................................................ 19

8.4 Demodulator / Data Slicer ..................................................................................................................................................................

8.5 Correlator............................................................................................................................................................................................

8.6 Wake-up Protocol - Carrier Frequency 125 kHz.................................................................................................................................

19

20

22

8.6.1 Without Pattern Detection.......................................................................................................................................................... 22

8.6.2 Single Pattern Detection ............................................................................................................................................................ 23

8.7 False Wake-up Register .....................................................................................................................................................................

8.8 Real Time Clock (RTC).......................................................................................................................................................................

24

25

8.8.1 Crystal Oscillator........................................................................................................................................................................ 26

8.8.2 RC-Oscillator ............................................................................................................................................................................. 26

8.8.3 External Clock Source ............................................................................................................................................................... 27

9 Package Drawings and Markings ...........................................................................................................................................

10 Ordering Information.............................................................................................................................................................

28

31

www.ams.com/LF-Receiver/AS3930

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