L9966 datasheet(115/122 Pages) STMICROELECTRONICS

115 / 122 page

Contents

Block diagram .....................................................................2

Pin description ....................................................................3

Application circuit .................................................................6

Input structure.....................................................................8

Device operation ..................................................................9

5.1

Absolute maximum rating........................................................ 9

5.2

Latch-up trials ................................................................. 9

5.3

ESD trials .................................................................... 10

5.4

Operating voltage ranges....................................................... 10

5.5

Temperature ranges and thermal data ............................................ 11

5.6

Operating modes.............................................................. 12

5.6.1

Software reset.......................................................... 16

5.7

Chip status ................................................................... 16

5.8

Polling operation: WAKE and SLEEP modes ...................................... 17

5.9

SLEEP mode ................................................................. 19

Current Sources ..................................................................21

6.1

Pull-down current programming ................................................. 22

6.2

Pull-up current programming .................................................... 23

6.3

Control of current source ....................................................... 26

6.4

Binary Lambda mode .......................................................... 28

6.4.1

Active discharge ........................................................ 29

Multiplexing switches.............................................................32

7.1

Channels routing to SENTx_GTMx output buffers .................................. 32

ADC converter....................................................................33

8.1

ADC1: voltage measurement.................................................... 33

8.2

ADC2: resistance measurement ................................................. 36

Measurement approaches ........................................................38

9.1

Single conversion (SC)......................................................... 38

9.2

Sequencer ................................................................... 38

L9966

Contents

DS12459 - Rev 10

page 115/122

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