SPC56EC74L7 datasheet(88/118 Pages) STMICROELECTRONICS

88 / 118 page

Electrical Characteristics

SPC564Bxx - SPC56ECxx

88/118

Doc ID 17478 Rev 4

RSW1

Internal resistance of

analog source

——

—

RSW2

Internal resistance of

analog source

——

—

RAD

Internal resistance of

analog source

——

—

IINJ

SR — Input current Injection

Current

injection on

one ADC_0

input, different

from the

converted one

VDD =

3.3 V ± 10%

−5—

VDD =

5.0 V ± 10%

−5—

| INL |

Absolute value for

integral non-linearity

No overload

—

0.5

1.5

LSB

| DNL |

Absolute differential

non-linearity

No overload

—

0.5

1.0

LSB

| OFS |

T Absolute offset error

—

0.5

—

LSB

| GNE |

T Absolute gain error

—

0.6

—

LSB

TUEP

P Total unadjusted

error(7) for precise

channels, input only

pins

Without current injection

−20.6

LSB

With current injection

−33

TUEX

T Total unadjusted

error(7) for extended

channel

Without current injection

−31

LSB

With current injection

−44

VDD = 3.3 V ± 10% / 5.0 V ± 10%, TA = −40 to 125 °C, unless otherwise specified.

Analog and digital VSS_HV must be common (to be tied together externally).

VAINx may exceed VSS_ADC0 and VDD_ADC0 limits, remaining on absolute maximum ratings, but the results of the

conversion will be clamped respectively to 0x000 or 0x3FF.

During the sample time the input capacitance CS can be charged/discharged by the external source. The internal

resistance of the analog source must allow the capacitance to reach its final voltage level within tADC0_S. After the end of

the sample time tADC0_S, changes of the analog input voltage have no effect on the conversion result. Values for the

sample clock tADC0_S depend on programming.

Conversion time = Bit evaluation time + Sampling time + 1 Clock cycle delay.

Refer to ADC conversion table for detailed calculations.

Total Unadjusted Error: The maximum error that occurs without adjusting Offset and Gain errors. This error is a

combination of Offset, Gain and Integral Linearity errors.

Table 43.

ADC conversion characteristics (10-bit ADC_0) (continued)

Symbol

Parameter

Conditions(1)

Value

Unit

Min

Typ

Max

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