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AS1118 датащи(PDF) 5 Page - ams AG

номер детали AS1118
подробное описание детали  64 LED Dr iver for Mobi le Appl ications wi th Er ror Detect ion
PDF  21 Pages
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производитель  AMSCO [ams AG]
домашняя страница  http://www.ams.com
Logo AMSCO - ams AG

AS1118 датащи(HTML) 5 Page - ams AG

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www.austriamicrosystems.com/LED-Driver-ICs/AS1118
Revision 1.01
4 - 20
AS1118
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, TAMB = -40°C to +85°C, typ. values @ TAMB = +25ºC and VDD = 5.0V (unless oth-
erwise specified).
See Figure 18 on page 8 for more information.
Table 4. Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDD
Operating Supply Voltage
2.7
5.5
V
IDDSD
Shutdown Supply Current
All digital inputs at VDD or
GND, TAMB = +25ºC
0.2
2
µA
IDD
Operating Supply Current
RSET = open circuit.
0.35
0.6
mA
All segments and decimal
point on; ISEG = -40mA.
335
fOSC
Display Scan Rate
8 digits scanned
0.6
0.8
1.2
kHz
IDIGIT
Digit Drive Sink Current
VOUT = 0.65V
320
mA
ISEG
Segment Drive Source Current
VDD = 5.0V, VOUT = (VDD -1V)
-37
-42
-47
mA
∆ISEG
Segment Drive Current Matching
3
%
ISEG
Segment Drive Source Current
Average Current
47
mA
Table 5. Logic Inputs/Outputs Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
IIH, IIL
Input Current SDI, SCL, LD
VIN = 0V or VDD
-1
1
µA
VIH
Logic High Input Voltage
SDI, SCL, LD, RESETN
1.26
V
VIL
Logic Low Input Voltage
SDI, SCL, LD, RESETN
0.54
V
VOH
Output High Voltage
SDO, ISOURCE = -1mA,
VDD = 5.0V
VDD - 1
V
SDO, ISOURCE = -1mA,
VDD = 3.0V
VDD - 0.5
VOL
Output Low Voltage
SDO, ISINK = 1mA
0.4
V
∆VI
Hysteresis Voltage
SDI, SCL, LD
1
V
Open Detection Level Threshold
0.7x
VDD
0.75x
VDD
0.8x
VDD
V
Short Detection Level Threshold
0.05x VDD
0.1x
VDD
0.15x
VDD
V
Table 6. SPI Timing Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
tCP
SCL Clock Period
100
ns
tCH
SCL Pulse Width High
20
ns
tCL
SCL Pulse Width Low
20
ns
tCSS
LD to SCL Rise Setup Time
25
ns
tCSH
SCL Rise to LD Rise Hold Time
10
ns
tDS
SDI Setup Time
0
ns
tDH
SDI Hold Time
5
ns
tDO
Output Data Propagation Delay
CLOAD = 50pF
25
ns
tLDCK
LD Rising Edge to SCL Rising Edge
20
ns
tCSW
Minimum LD Pulse High
20
ns
tDSPD
Data-to-Segment Delay
2.25
ms



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