TMS37122 datasheet(13/73 Pages) TI

13 / 73 page

CHAPTER 2

Electrical Description

Chapter 2:

Electrical Description

This chapter describes the electrical circuitry of the 3D-Analog Front End (AFE) integrated

circuit TMS37122

Topic

Page

2.1

General......................................................................................................15

2.2

Power Supply ...........................................................................................17

2.2.1

VBAT Supply........................................................................................17

2.2.1.1

Standard Battery Supply.............................................................17

2.2.1.2

Rechargeable Battery Supply .....................................................17

2.2.1.3

Battery Backup Supply ...............................................................18

2.2.2

VCL Supply ..........................................................................................19

2.2.2.1

Backup Mode..............................................................................19

2.2.2.2

Test Mode...................................................................................20

2.3

Power-on-reset.........................................................................................22

2.4

Limiter Circuits.........................................................................................23

2.5

Wake Detector ..........................................................................................24

2.6

End-of-burst Detector..............................................................................25

2.7

Pulse Position Demodulator ...................................................................25

2.8

Control Unit ..............................................................................................26

2.8.1

Off Mode ..............................................................................................28

2.8.2

Standby Mode ......................................................................................28

2.8.3

Init Mode ..............................................................................................28

2.8.4

Active Mode .........................................................................................28

2.8.4.1

Wake Pattern Detection..............................................................29

2.8.4.2

Transparent Mode ......................................................................30

2.9

FSK Modulator .........................................................................................31

continued on next page

TMS37122 Datasheet(PDF) 13 Page - Texas Instruments

TMS37122 Datasheet(HTML) 13 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73

Datasheet Download

Link URL