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AS1108

Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s

6 Electrical Characteristics

VDD = 2.7V to 5.5V, RSET = 9.53k

Ω±1%, TAMB = TMIN to TMAX (unless otherwise specified). All limits are guaranteed.

The parameters with min and max values are guaranteed with production tests or SQC (Statistical Qualification Con-

trol) methods.

Table 3. Electrical Characteristics

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Operating Temperature Range

TAMB

0

+70

°C

Operating Supply Voltage

VDD

2.7

5.0

5.5

V

Shutdown Supply Current

IDDSD

All digital inputs at VDD or GND,

TAMB = +25ºC

10

µA

Operating Supply Current

IDD

RSET = open circuit.

1

mA

All segments and decimal point

on; ISEG = -40mA.

330

Display Scan Rate

fOSC

4 digits scanned

1000

1600

2600

Hz

Digit Drive Sink Current

IDIGIT

VOUT = 0.65V

320

mA

Segment Drive Source Current

ISEG

VDD = 5.0V, VOUT = (VDD -1V)

-30

-40

-45

mA

Segment Drive Current Matching

∆ISEG

3.0

%

Digit Drive Source Current

IDIGIT

Digit off, VDIGIT = (VDD - 0.3V)

-2

mA

Segment Drive Sink Current

ISEG

Segment off, VSEG = 0.3V

5

mA

Slow Segment Blink Period (ON

phase, Internal Oscillator)

tSLOWBLINK

0.64

1

1.65

s

Fast Segment Blink Period

(ON phase, Internal Oscillator)

tFASTBLINK

0.32

0.5

0.83

s

Fast or Slow Segment Blink Duty

Cycle (Guaranteed by design)

49.9

50

50.1

%

Table 4. Logic Inputs/Outputs Characteristics

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Input Current DIN, CLK, LOAD/CSN

IIH, IIL

VIN = 0V or VDD

-1

1

µA

Logic High Input Voltage

VIH

0.7 x VDD

V

Logic Low Input Voltage

VIL

VDD = 5.0V ± 10%

0.8

V

VDD = 3.0V ± 10%

0.6

Output High Voltage

VOH

DOUT, ISOURCE = -1mA,

VDD = 5.0V ± 10%

VDD - 1

V

DOUT, ISOURCE = -1mA,

VDD = 3.0V ± 10%

VDD - 0.5

Output Low Voltage

VOL

DOUT, ISINK = 1.6mA

0.4

V

Hysteresis Voltage

∆VI

DIN, CLK, LOAD/CSN

1

V