參數(shù)資料
型號(hào)： MAX1497
廠商： Maxim Integrated Products, Inc.
元件分類： LED驅(qū)動(dòng)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(dòng)器和µC接口
文件頁(yè)數(shù)： 9/33頁(yè)
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
_______________________________________________________________________________________
9
Typical Operating Characteristics (continued)
(AV
DD
= DV
DD
= V
DD
= +2.7V to +5.25V, V
LED
= +2.7V to +5.25V, GND = 0, GLED = 0, external reference mode, REF+ = 2.048V,
REF- = GND, C
REF+
= C
REF-
= 0.1μF, RANGE bit = 1, internal clock mode, C
VNEG
= 0.1μF. T
A
= +25°C, unless otherwise noted.)
DATA OUTPUT RATE
vs. SUPPLY VOLTAGE
M
SUPPLY VOLTAGE (V)
D
4.74
4.23
3.21
3.72
4.995
4.990
4.985
5.000
5.005
5.010
5.015
5.020
4.980
2.70
5.25
OFFSET ERROR
vs. COMMON-MODE VOLTAGE
M
COMMON-MODE VOLTAGE (V)
O
1.5
1.0
-1.5 -1.0 -0.5
0
0.5
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
0.20
-0.20
-2.0
2.0
SEGMENT CURRENT
vs. SUPPLY VOLTAGE
M
SUPPLY VOLTAGE (V)
S
μ
A
4.74
4.23
3.72
3.21
5
10
15
20
25
30
0
2.70
5.25
R
ISET
= 25k
V
NEG
STARTUP SCOPE SHOT
M
20ms/div
2V/div
1V/div
V
DD
V
NEG
CHARGE-PUMP OUTPUT VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
M
SUPPLY VOLTAGE (V)
V
N
4.75
4.25
3.75
3.25
-2.48
-2.46
-2.44
-2.42
-2.40
-2.50
2.75
5.25
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