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參數(shù)資料
| 型號： | LP5527TLX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| 中文描述： | LED DISPLAY DRIVER, PBGA30 |
| 封裝： | 2.5 X 3 MM, 0.60 MM HEIGHT, BGA-30 |
| 文件頁數(shù)： | 14/21頁 |
| 文件大?。?/td> | 829K |
| 代理商： | LP5527TLX |
Audio Synchronization
(Continued)
Audio Input Threshold Setting
Threshold[3:0]
0000
0001
0010
*
*
1110
1111
Threshold Level, mV (typical)
Disabled
0.2
0.4
*
*
2.5
2.7
Typical Gain Values vs. Audio Input Amplitude
Audio Input Amplitude mV
P-P
0 to 10
0 to 20
0 to 40
1 to 85
3 to 170
5 to 400
10 to 800
20 to 1600
Gain Value dB
0
-6
-12
-18
-24
-31
-37
-46
Input Signal Gain Control
GAIN_SEL[2:0]
000
001
010
011
100
101
110
111
Gain dB
0
-6
-12
-18
-24
-31
-37
-46
Refreshing Frequency
SPEED_CTRL[1:0]
00
01
10
11
Refreshing Rate Hz
FASTEST
15
7.6
3.8
Logic Interface Characteristics
Limits in standard typeface are for T
= 25
o
C. Limits in
boldface
type apply over the operating ambient temperature range
(-30
o
C
<
T
A
<
+85
o
C). Unless otherwise noted, specifications apply to the LP5527 Block Diagram with: V
= 3.6V, C
=
10 μF, C
OUT1
= 10 μF, C
OUT2
= 10 μF, C
VDDIO
= 100 nF, C
VREF
= 100 nF, C
VDDA
= 4.7 μF, C
VDD1
= 100 nF, C
VDD2
= 100
nF, L
1
= 4.7 μH (Note 9)
Symbol
Parameter
Condition
Logic Inputs SCL and FLASH_SYNC
V
IL
Input Low Level
V
DD_IO
= 1.65V to V
DD1,2
V
IH
Input High Level
I
I
Input Current
f
SCL
SCL Pin Clock Frequency
Logic Input NRST
V
IL
Input Low Level
V
DD_IO
= 1.65V to V
DD1,2
V
IH
Input High Level
I
I
Input Current
t
NRST
Reset Pulse Width
Logic Input/Output SDA
V
OL
Output Low Level
I
OUT
= 3 mA
I
L
Output leakage current
V
OUT
= 2.8V
Min
Typical
Max
Unit
0.2xV
DD_IO
V
V
μA
kHz
0.8xV
DD_IO
-1.0
1.0
400
0.5
V
V
μA
μs
1.2
-1.0
10
1.0
0.3
0.5
1.0
V
μA
L
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