參數(shù)資料
型號: MAX1497
廠商: Maxim Integrated Products, Inc.
元件分類: LED驅(qū)動器
英文描述: 3.5- and 4.5-Digit. Single-Chip ADCs with LED Drivers and 礐 Interface
中文描述: 3位半和4位半、單片ADC,帶有LED驅(qū)動器和µC接口
文件頁數(shù): 5/33頁
文件大小: 665K
代理商: MAX1497
M
3.5- and 4.5-Digit, Single-Chip ADCs with LED
Drivers and μC Interface
_______________________________________________________________________________________
5
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
320
180
20
UNITS
DV
DD
= 5V
DV
DD
= 3.3V
Standby mode
From AV
DD
or V
DD
DV
DD
Current (Notes 8, 9)
I
DVDD
μA
LED Drivers Bias Current
LED DRIVERS
(Table 6)
LED Supply Voltage
LED Shutdown Supply Current
120
μA
V
LED
I
SHDN
2.70
5.25
10
V
μA
LED driver shutdown mode
LED Supply Current
I
LED
Seven segments and decimal point on,
R
ISET
= 25k
MAX1499
MAX1497
176
mA
512
640
25
0.178
Display Scan Rate
f
OSC
Hz
Segment Current Slew Rate
DIG_ Voltage Low
I
SEG
/
t
V
DIG
mA/μs
V
I
DIG_
= 176mA
0.300
Segment Drive Source Current
Matching
I
SEG
±3
±10
%
Segment Drive Source Current
Interdigit Blanking Time
I
SEG
V
LED
- V
SEG
= 0.6V, R
ISET
= 25k
16
20
4
25.5
mA
μs
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= V
DD
= +2.7V to +5.25V, GND = 0, GLED = 0, V
LED
= +2.7V to +5.25V, V
REF+
- V
REF-
= 2.048V (external reference)
C
REF+
= C
REF-
= 0.1μF, C
VNEG
= 0.1μF. Internal clock mode, unless otherwise noted. All specifications are at T
A
= T
MIN
to T
MAX
.
Typical values are at T
A
= +25°C, unless otherwise noted.)
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