SPC56AP60X datasheet(80/104 Pages) STMICROELECTRONICS

80 / 104 page

Electrical characteristics

SPC56xP54x, SPC56xP60x

80/104

Doc ID 18340 Rev 3

3.15.2

ADC conversion characteristics

Table 32.

ADC conversion characteristics

Symbol

Parameter

Conditions(1)

Value

Unit

Min

Typ

Max

VINAN

SR Analog input voltage(2)

—

VSS_HV_AD

0.3

—

VSS_HV_AD

+ 0.3

fCK

ADC Clock frequency

(depends on ADC

configuration)

(The duty cycle depends

on AD_clk(3) frequency)

—3(4)

—60

MHz

SR Sampling frequency

—

1.53

MHz

tADC_S

Sample time(5)

fADC = 20 MHz,

INPSAMP = 3

125

—

fADC = 9 MHz,

INPSAMP = 255

——

28.2

µs

tADC_C

PConversion time(6)

fADC = 20 MHz

(7),

INPCMP = 1

0.650

—

µs

(8)

ADC input sampling

capacitance

——

—

2.5

CP1

(8)

ADC input pin capacitance

——

—

CP2

(8)

ADC input pin capacitance

——

—

CP3

(8)

ADC input pin capacitance

——

—

RSW1

(8)

Internal resistance of

analog source

VDD_HV_AD = 5 V ±10%

—

0.6



VDD_HV_AD = 3.3 V ±10%

—



RSW2

(8)

Internal resistance of

analog source

VDD_HV_AD = 5 V ±10%

—

2.15



VDD_HV_AD = 3.3 V ±10%

—

3.6



RAD

(8)

Internal resistance of

analog source

——

—



IINJ

Input current injection

Current injection on one ADC

input, different from the

converted one. Remains within

TUE spec.

–5

—

INL

Integral Non Linearity

No overload

—

±1.5

—

LSB

DNL

Differential Non Linearity

No overload

–1.0

—

1.0

LSB

OFS

Offset error

—

±1

—

LSB

GNE

Gain error

—

±1

—

LSB

TUE

Total unadjusted error

without current injection

16 precision channels

–2.5

—

2.5

LSB

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