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参数资料
| 型号： | AS1122-BQFT |
| 厂商： | ams |
| 文件页数： | 6/23页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR 12-CH W/DELAY 24-TQFN |
| 标准包装： | 1 |
| 系列： | * |
AS1122
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
Timing Characteristics
V DD = +2.7V to +3.6V, T AMB = -40°C to +85 oC. Typical values are at T AMB = +25°C, V DD = 3.3V (unless otherwise specified).
Table 4. Output Timing Characteristics
Symbol
t R_OUT
Parameter
Rise Time OUT
1
Conditions
Min
Typ
20
Max
Unit
ns
t F_OUT
Fall Time OUT
1
20
ns
t D
2
Average Output Delay Time
(can be turned off on request)
25
ns
1. Value can be factory trimmed for EMI improvement.
2. See Figure 24 on page 10 .
Interface Characteristics
V DD = +2.7V to +3.6V, T AMB = -40°C to +85 oC. Typical values are at T AMB = +25°C, V DD = 3.3V (unless otherwise specified).
Table 5. Serial Interface Timing Characteristics
Symbol
f OSC
f CLK
1
t LOW
Parameter
Oscillator Frequency
Data Shift Clock Frequency
CLK low time during data shift
Conditions
Min
8
1
Typ
10
Max
12
5
1
Unit
MHz
MHz
s
t CAPT
1
CLK low time for data capture
1.5
1.8
2.85
s
t SETUP
2
Setup Time
SDI, CLKI
12
ns
2
t HOLD
Hold Time
SDI, CLKI
12
ns
t PD_rising
2
Delay CLKI to CLKO
3
rising CLKI to rising CLKO
2
3.5
8
ns
2
t PD_falling
Delay CLKI to CLKO
3
rising CLKI to falling CLKO
72
103.5
138
ns
2
t PD_SDO
Delay CLKO to SDO
3
falling edge CLKO
0.8
1.5
3
ns
2
t H_CLKO
3
High Time of CLKO
70
100
130
ns
t R_CLK
Rise Time CLK
3
C LOAD = 20pF
10
ns
t R_DATA
3
Rise Time Data
C LOAD = 20pF
10
ns
1. See Figure 24 on page 10
2. See Figure 36 on page 16 and Figure 37 on page 16
3. Guaranteed by design and not production tested.
Figure 3. Load Circuit for Digital Output Timing Specifications
200μA
I OL
SDO
CLKO
C LOAD
20pF
200μA
I OH
VDD/2
www.austriamicrosystems.com/LED-Driver-ICs
Revision 1.00
5 - 22
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