L9961 datasheet(27/63 Pages) STMICROELECTRONICS

27 / 63 page

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

TCURFILTER

=528us*23+CODE

NBIT_CSA

ADC bit number: encoding is in

2’s complement

Design info

bit

VCUR_RES

CSA resolution

Design info

VDIFF_RANGE_E

XT /2

NBIT_CSA-1

ICSA_LEAK

ISENSEP, ISENSEM input

leakage differential current

ISENSEP, ISENSEM in

[0-3.3] V range

190

RCSA_IN_DIFF

ISENSEP, ISENSEM differential

input impedance

ISENSEP-ISENSEM falls

within VDIFF_RANGE

Guaranteed by design

400

kΩ

CSAGAIN_ERR_CAL

ADC post-calibration gain error

Post-soldering

After customer EOL

calibration using a single

point

TAMB = 25 °C

2.6 mV < | ISENSEP-

ISENSEM | < VDIFF_RANGE

-0.1

0.1

CSAGAIN_ERR

ADC native gain error

Post-soldering

TAMB = 25 °C

2.6 mV < | ISENSEP-

ISENSEM | < VDIFF_RANGE

0.5

CSAGAIN_ERR_THERM_DRI

Gain error thermal drift

Guaranteed by

characterization

ISENSEP-ISENSEM falls

within VDIFF_RANGE

-1

LSB/°C

CSAOFFSET_ERR

ADC native offset error

Long term average over

100 samples using Coulomb

counter

TAMB = 25 °C

-1

LSB

CSALOW_RANGE_ERR

Total conversion error in low

range, including post-soldering,

ageing effects and INL

0 mV < | ISENSEP-

ISENSEM | ≤ 2.6 mV

Guaranteed by test bench

characterization

TAMB = 25 °C

-2

LSB

CSAOFFSET_ERR_THERM_

DRIFT

Offset error thermal drift

Guaranteed by

characterization

-0.007

0.007

LSB/°C

VCSA_NOISE

+/- 3σ distribution over 100

samples

Guaranteed by

characterization

-7

LSB

CSAINL_ERR

ADC integral non linearity error

Guaranteed by

characterization

-8

LSB

L9961

Current conversion routine

DS14012 - Rev 1

page 27/63

L9961 Datasheet(PDF) 27 Page - STMicroelectronics

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