DS1181L
20MHz to 134MHz Spread-Spectrum
Clock Modulator for LCD Panels
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
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3
SUPPLY CURRENT vs. SUPPLY VOLTAGE
DS1181L
toc01
VCC (V)
I CC
(mA)
3.5
3.4
3.3
3.2
3.1
2
4
6
8
10
12
0
3.0
3.6
CLKIN = 134MHz
CLKIN = 20MHz
CL = 7pF
CLKIN = 66MHz
SUPPLY CURRENT vs. TEMPERATURE
DS1181L
toc02
TEMPERATURE (
°C)
I CC
(mA)
110
60
10
2
4
6
8
10
12
0
-40
CLKIN = 134MHz
CLKIN = 20MHz
CL = 7pF
CLKIN = 66MHz
SUPPLY CURRENT vs. FREQUENCY
DS1181L
toc03
FREQUENCY (MHz)
I CC
(mA)
120
100
80
60
40
2
4
6
8
10
12
0
20
CL = 7pF
VCC = 3.6V
VCC = 3.0V
DUTY CYCLE vs. SUPPLY VOLTAGE
DS1181L
toc04
VCC (V)
DUTY
CYCLE
(%)
3.5
3.4
3.3
3.2
3.1
42
44
46
48
50
52
54
56
58
60
40
3.0
3.6
CLKIN = 72MHz
DUTY CYCLE vs. TEMPERATURE
DS1181L
toc05
TEMPERATURE (
°C)
DUTY
CYCLE
(%)
110
60
10
42
44
46
48
50
52
54
56
58
60
40
-40
CLKIN = 72MHz
SPECTRUM ATTENUATION vs. FREQUENCY AT
DIFFERENT DITHER AMPLITUDES
DS1181L
toc06
FREQUENCY (MHz)
ATTENUATION
(dB)
fOUT = 72MHz
RBW = 120KHz
CENTER DITHER
±2%
±1.5%
±1%
0.5%
10dB
13dB 15dB 17dB