AS1108-WL ams, AS1108-WL Datasheet - Page 4

• Manufacturer Part Number: AS1108-WL
• Description: LED Display Drivers
• Manufacturer: ams

Specifications of AS1108-WL

• Rohs: yes
• Number Of Digits: 4
• Number Of Segments: 7
• Mounting Style: SMD/SMT
• Package / Case: SOIC-20
• Operating Supply Voltage: 5 V
• Maximum Supply Current: 1 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Number Of Leds: 1
• Power Dissipation: 941 mW

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
Conditions: V
Table 3. Electrical Characteristics
Table 4. Logic Inputs/Outputs Characteristics
Table 5. Timing Characteristics
Note: All limits are guaranteed. The parameters with min and max values are guaranteed with production tests or
www.austriamicrosystems.com/LED-Driver-ICs/AS1108
Input Current DIN, CLK, LOAD/CSN
LOAD Rising Edge-to-Next Clock Rising Edge
Segment Drive Current Matching
Fast or Slow Segment Blink Duty
Slow Segment Blink Period (ON
Segment Drive Source Current
CLK Rise-to -LOAD/CSN Rise Hold Time
(ON phase, Internal Oscillator)
Cycle (Guaranteed by design)
Segment Drive Sink Current
Fast Segment Blink Period
Digit Drive Source Current
Operating Supply Voltage
Shutdown Supply Current
Operating Supply Current
phase, Internal Oscillator)
Logic High Input Voltage
Logic Low Input Voltage
Digit Drive Sink Current
CSMFall-to-CLK Rise Setup Time
SQC (Statistical Quality Control) methods.
Minimum LOAD/CSN Pulse High
Output Data Propagation Delay
Output High Voltage
Output Low Voltage
Display Scan Rate
Hysteresis Voltage
(AS1108 SPI-programmed)
Data-to-Segment Delay
DD
CLK Pulse Width High
CLK Pulse Width Low
Parameter
Parameter
CLK Clock Period
= 2.7 to 5.5V, R
DIN Setup Time
DIN Hold Time
Parameter
SET
(see Figure 10 on page 7)
= 9.53k
t
t
SLOWBLINK
FASTBLINK
Symbol
Symbol
I
I
ΔI
I
I
IH
DDSD
f
I
I
V
V
DIGIT
DIGIT
V
V
ΔV
I
OSC
SEG
SEG
V
Ω
DD
SEG
OH
DD
, I
OL
IH
IL
±1%, T
I
IL
Symbol
t
t
t
AMB
t
t
LDCK
DSPD
All digital inputs at V
CSW
t
t
t
All segments and decimal point
t
t
CSS
CSH
t
DO
V
Digit off, V
CP
CH
DS
DH
CL
Revision 2.12
DD
DOUT, I
DOUT, I
Segment off, V
DIN, CLK, LOAD/CSN
= T
DOUT, I
V
V
V
V
= 5.0V, V
R
V
on; I
DD
DD
DD
DD
MIN
SET
4 digits scanned
IN
Conditions
T
V
Conditions
= 5.0V ± 10%
= 3.0V ± 10%
= 5.0V ± 10%
= 3.0V ± 10%
AMB
OUT
= 0V or V
SOURCE
SOURCE
to T
SEG
DIGIT
= open circuit.
SINK
C
Conditions
= +25ºC
OUT
LOAD
= 0.65V
MAX
= -40mA.
= (V
= 1.6mA
SEG
= -1mA,
= -1mA,
= (V
(unless otherwise specified).
DD
DD
= 50pF
DD
= 0.3V
DD
or GND,
- 0.3V)
-1V)
0.7 x V
V
V
DD
DD
1000
Min
Min
0.64
0.32
49.9
100
Min
320
-30
2.7
-1
50
50
25
25
50
50
-2
0
0
5
- 0.5
- 1
DD
1600 2600
Typ
Typ
330
-40
5.0
3.0
0.5
50
1
Typ
1
Max
1.65
0.83
50.1
Max
2.25
5.5
-45
10
25
1
Max
0.8
0.6
0.4
1
Unit
Unit
mA
mA
mA
mA
mA
µA
Hz
Unit
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
%
V
µA
s
s
4 - 19
V
V
V
V
V