L9678P datasheet(195/203 Pages) STMICROELECTRONICS

195 / 203 page

DocID029274 Rev 3

195/203

L9678P, L9678P-S

Electrical characteristics

202

15.22.1

Analog to digital converter

All electrical characteristics are valid for the following conditions unless otherwise noted.

-40 °C

 Ta  +95 °C, VINGOOD(max)  VIN  35V.

Table 61. Analog to digital converter

N°

Symbol

Parameter

Condition

Min

Typ

Max

Unit

1VADC_RANGE

ADC input voltage range -

0.1

2.5

2VADC_REF

ADC reference voltage

-1.5%

2.5

+1.5%

ADC_RES

ADC resolution(1)

Design Info

bit

DNL

Differential non linearity

error (DNL)

Separation between adjacent

levels, measured bit to bit of

actual and an ideal output step.

No missing codes

-1

LSB

5INL

Integral non linearity

error (INL)

Maximum difference between

the actual analog value at the

transition between 2 adjacent

steps and its ideal value

-3

LSB

6EQUANT

Quantization Error

Design Info

-0.5

0.5

LSB

TotErr

Total error

Includes INL, DNL, ADC

Reference voltage tolerance

and quantization error

-15

+15

LSB

TotErr_0v1

ADC total error for 0.1V

input voltage

--5

LSB

TotErr_2v4

ADC total error for 2.4V

input voltage

-15

+15

LSB

Pre-ADC settling time

4.81

µs

Single conversion time

2.25

µs

Intra-queue settling time -

3.5

µs

Post- ADC settling time

3.44

µs

ADC conversion time -

voltage

4x sampling for each of the 4

conversions in the queue

Design Info

54.75

µs

ADC conversion time –

current and voltage

8x sampling for DCS,

temperature and squib loop

resistance measurements + 4x

sampling for remaining 2

conversions in the queue

Design Info

51.25

µs

1. LSB = (2.5 V / 1024) = 2.44 mV

L9678P 데이터시트(PDF) 195 Page - STMicroelectronics

L9678P 데이터시트(HTML) 195 Page - STMicroelectronics

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 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL