SPC58NH84C3 datasheet(60/147 Pages) STMICROELECTRONICS

60 / 147 page

Electrical characteristics

SPC58EHx, SPC58NHx

60/147

DS12304 Rev 5

4.12.3

SAR ADC 10 bit electrical specification

The ADC comparators are 10-bit Successive Approximation Register analog-to-digital

converters with full capacitive DAC. The SARn architecture allows input channel

multiplexing.

Note:

The functional operating conditions are given in the DC electrical specifications. Absolute

maximum ratings are stress ratings only, and functional operation at the maxima is not

guaranteed. Stress beyond the listed maximum may affect device reliability or cause

permanent damage to the device.

4. Mode3: 6 sampling cycles + 10 conversion cycles at 16 MHz.

5. IADCREFH and IADCREFL are independent from ADC clock frequency. It depends on conversion rate: consumption is driven

by the transfer of charge between internal capacitances during the conversion.

6. Current parameter values are for a single ADC.

7. TUE is granted with injection current within the range defined in Table 26, for parameters classified as T and D.

8. All channels of all SAR-ADC12bit and SAR-ADC10bit are impacted with same degradation, independently from the ADC

and the channel subject to current injection.

9. DNL is granted with injection current within the range defined in Table 26, for parameters classified as T and D.

Table 28. ADC-Comparator electrical specification

Symbol

Parameter

Conditions

Value

Unit

Min

Max

fADCK

Clock frequency

Standard frequency mode

7.5

13.33

MHz

High frequency mode

>13.33

16.0

tADCINIT

— ADC initialization time

—

1.5

—

µs

tADCBIASINIT

—

ADC BIAS initialization

time

—5

—

µs

tADCINITSBY

—

ADC initialization time

in standby

Standby Mode

—

µs

tADCPRECH

T ADC precharge time

—

1/fADCK

—µs

ΔVPRECH

Precharge voltage

precision

TJ < 150 °C

0.25

tADCSAMPLE

P ADC sample time(1)

10-bit ADC mode, Fast

channel

5/fADCK(2)

—µs

10-bit ADC mode, Standard

channel

6/fADCK

—µs

tADCEVAL

ADC evaluation time

10-bit ADC mode

10/fADCK

—

µs

ADC comparator mode

2/fADCK

—

IADCREFH(3),(4)

ADC high reference

current

Run mode

(average across all codes)

—7

µA

Power Down mode

—

ADC comparator mode

—

19.5

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