L9965P datasheet(59/104 Pages) STMICROELECTRONICS

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3.8.2

Voltage ADC electrical parameters

All parameters are tested and guaranteed in the following conditions, unless otherwise noted: all supplies

according to the Table 3; TJ according to the Table 2.

Table 32. Voltage ADC electrical parameters

Symbol

Parameter

Test condition

Min

Typ

Max Unit

VAIN_RANGE_0

AINx differential voltage input

measurement operative range

Pyro-res measurement (PF vs PR)

300

VAIN_RANGE_1

Pyro-deployment retry (PF vs PR) and

VRCM measurement

VAIN_RANGE_2

On-demand conversions (PS, PF, PR and

ERBST(1))

27.3

VADC_LSB_0

AINx measurement resolution

VAIN_RANGE_0

0.651

VADC_LSB_1

VAIN_RANGE_1

10.69

VADC_LSB_2

VAIN_RANGE_2

55.27

NBIT_ADC

ADC bit number

Design info (signed word)

bit

VADC_OFFSET_ERR_0

ADC offset error(2)

Pyro-res measurement (PF vs PR)

-5

LSB

VADC_OFFSET_ERR_1

Pyro-deployment retry (PF vs PR)

-5

LSB

VADC_OFFSET_ERR_2

On-demand conversions (PS, PF, PR and

ERBST)

-5

LSB

VADC_GAIN_ERR_0

ADC gain error(2)

Pyro-res measurement (PF vs PR)

-2

VADC_GAIN_ERR_1

Pyro-deployment retry (PF vs PR)

-2

VADC_GAIN_ERR_2

On-demand conversions (PS, PF, PR and

ERBST)

-2

tADC_CONV

ADC conversion time

Guaranteed by SCAN

350

380

µs

1. The min voltage for ERBST voltage measurement is 4.7 V (below the device is off).

2. Single shot samples are characterized by a superimposed Gaussian noise, with zero-mean and standard deviation.

L9965P

Functional description

DS14702 - Rev 4

page 59/104

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