AS3722 datasheet(77/199 Pages) AMSOSRAM

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[v1-01] 2015-Sep-07

AS3722 − Detailed Descriptions- System Functions

Parameter

Figure 70:

ADC Characteristics

ADC Characteristics: Shows the key electrical parameter of the internal ADC.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Resolution

Bit

Vin

Input Voltage Range

for 1:1 mode

1.6

DNL

Differential Nonlinearity

1LSB 1.56mV for 1:1

(depending on selected

channel)

± 0.3

LSB

INL

Integral Nonlinearity

± 0.9

LSB

Vos

Input Offset Voltage

LSB

Rin

Input Impedance

1:1

100

MΩ

4:1

200

kΩ

Cin

Input Capacitance

Idd

Power Supply Current

during conversion only

500

μA

Idd

Power Down Current

100

Transient Parameters (25°C)

Conversion Time

μs

Clock Frequency

internal CLK frequency/8

fclk_int/

kHz

Settling time of S&H

μs

ADC Reference Buffer

VOUT

Output voltage

-1.2%

1.6

+1.2%

IOUT

Output current

ROUT>6.4kΩ

0250

COUT

Output capacitor

tSTART

Start-up time

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