STR91XFAX44 datasheet(89/101 Pages) STMICROELECTRONICS

89 / 101 page

STR91xFAx3x, STR91xFAx4x

Electrical characteristics

89/101

7.13

ADC electrical characteristics

VDDQ = 2.7 - 3.6V, VDD = 1.65 - 2V, TA = -40 / 85 °C unless otherwise specified.

Table 47.

General ADC electrical characteristics

Symbol

Parameter(1)

Test

Conditions

Value

Unit

Min

Typ

Max

VAIN

Input Voltage Range

AVREF

RES

Resolution

Bits

NCH

Number of Input Channels

fADC

ADC Clock Frequency

MHz

tPOR(ADC) POR bit set to Standby mode

500

tck_off(ADC) ADC clock disabled before conversion

(2)

1ms

tSTAB

Stabilization time

µs

CIN

Input Capacitance

Differential Non-Linearity

(3) (4)

LSB(5)

Integral Non-Linearity

(3)

LSB(5)

Offset Error

(3)

LSB(5)

Gain Error

(3)

0.5

LSB(5)

Total Unadjusted Error

(3)

LSB(5)

IADC

Power Consumption

4.6

IVREF

Current on VREF input pin

(6) (7)

920

µA

Guaranteed by design, not tested in production.

The ADC clock can be disabled by setting the ADC bit in the SCU_PCGR1 register or by setting the ACG bit in the

SCU_GPIOANA register (for Rev H and higher)

Conditions: AVSS = 0 V, AVDD = 3.3 V fADC = 25 MHz.

The A/D is monotonic, there are no missing codes.

1 LSB = (AVDD - AVSS)/1024

Data based on characterization, not tested in production.

Conditions: VDD=1.8 V, fCPU=96 MHz , fADC=24 MHz

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