Operating Temperature Range ........................ -40°C to +125°C
Storage Temperature Range............................ -55°C to +125°C
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow) ......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
(T
A
= -40NC to +125NC, unless otherwise noted.)
PARAMETER
Supply Voltage
Input Logic 1
Input Logic 0
Input Logic Open
Input Leakage
SSO Load
Crystal or Clock Input Frequency
Crystal ESR
Clock Input Duty Cycle
Crystal Parallel Load
Capacitance
SYMBOL
V
CC
V
IH
V
IL
I
IF
I
IL
C
SSO
f
IN
X
ESR
F
INDC
C
L
(Note 4)
40
0V < V
IN
< V
CC
(Note 2)
0V < V
IN
< V
CC
(Note 3)
f
SSO
< 67MHz
67MHz
P
f
SSO
< 101MHz
101MHz
P
f
SSO
< 134MHz
16.0
(Note 1)
CONDITIONS
MIN
3.0
0.8 x
V
CC
V
GND
-
0.3
TYP
MAX
3.6
V
CC
+
0.3
0.2 x
V
CC
Q1
Q80
15
10
7
33.4
90
60
18
MHz
I
%
pF
pF
UNITS
V
V
V
FA
FA
Maxim Integrated
2
MAX31180
Spread-Spectrum Crystal Multiplier
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +3.0V to +3.6V, T
A
= -40°C to +125°C, unless otherwise noted.)
PARAMETER
Supply Current
Power-Down Current
Output Leakage (SSO)
Low-Level Output Voltage (SSO)
High-Level Output Voltage (SSO)
Input Capacitance (X1/X2)
SYMBOL
I
CC1
I
CCQ
I
OZ
V
OL
V
OH
C
IN
CONDITIONS
C
SSO
= 15pF, f
SSO
= 16MHz
PDN
= GND, all input pins open
PDN
= GND
I
OL
= 4mA
I
OH
= -4mA
(Note 5)
2.4
5
-1
MIN
TYP
MAX
15
200
+1
0.4
UNITS
mA
FA
FA
V
V
pF
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +3.0 to +3.6V, T
A
= -40°C to +125°C, unless otherwise noted.)
PARAMETER
SSO Duty Cycle
Rise Time
Fall Time
Peak Cycle-to-Cycle Jitter
Power-Up Time
Power-Down Time
Dither Rate
SYMBOL
SSODC
t
R
t
F
t
J
t
POR
t
PDN
f
DITHER
CONDITIONS
Measured at V
CC
/2, CMSEL = 0 or open
Measured at V
CC
/2, CMSEL = 1
(Note 6)
(Note 6)
f
SSO
= 16MHz, T
A
= -40 to +85NC,
10,000 cycles (Note 5)
PDN
pin (Note 7)
PDN
pin (Note 8)
(Note 9)
f
IN
/992
MIN
40
30
1.6
1.6
75
11
100
TYP
MAX
60
70
UNITS
%
ns
ns
ps
ms
ns
Note 1:
All voltages referenced to ground.
Note 2:
Maximum source/sink current applied to input to be considered an open. Typical voltage range between 0.4 x V
CC
and
0.55 x V
CC
.
Note 3:
Applicable to pins CMSEL, SMSEL, and
PDN.
Note 4:
See information about C
L1
and C
L2
in the
Applications Information
section at the end of the data sheet.
Note 5:
Not production tested.
Note 6:
For 7pF load.
Note 7:
Time between
PDN
deasserted to output active.
Note 8:
Time between
PDN
asserted to output high impedance.
Note 9:
Guaranteed by design.
Maxim Integrated
3
MAX31180
Spread-Spectrum Crystal Multiplier
Typical Operating Characteristics
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX31180 toc01
SUPPLY CURRENT vs. TEMPERATURE
MAX31180 toc02
SUPPLY CURRENT vs. FREQUENCY
19
SUPPLY CURRENT (mA)
17
15
13
11
9
12
SUPPLY CURRENT (mA)
11
10
9
8
7
3.0
AT 16MHz
CMSEL = 1x
12
SUPPLY CURRENT (mA)
11
10
9
8
7
AT 16MHz
CMSEL = 1x
AT 16MHz
CMSEL = 1x
3.2
3.4
-40
10
60
110
16
21
26
31
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
FREQUENCY (MHz)
PDN SUPPLY CURRENT
vs. TEMPERATURE
MAX31180 toc04
DUTY CYCLE vs. TEMPERATURE
58
56
DUTY CYCLE (%)
54
52
50
48
46
44
42
40
-40
10
60
110
TEMPERATURE (°C)
AT 16MHz
MAX31180 toc05
0.06
0.05
0.04
0.03
0.02
0.01
0
AT 16MHz
CMSEL = 1x
60
PDN SUPPLY CURRENT (mA)
-40
10
60
110
TEMPERATURE (°C)
DUTY CYCLE vs. SUPPLY VOLTAGE
MAX31180 toc06
FREQUENCY SPECTRUM AT 133.3MHz
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
-55
-60
-65
129.3
58
56
DUTY CYCLE (%)
54
52
50
48
46
44
42
40
3.0
AT 16MHz
±1% DITHER
NO DITHER
±0.5% DITHER
ATTENUATION (dB)
±2%
DITHER
AT 133.3MHz
131.3
133.3
135.3
137.3
3.2
3.4
3.6
SUPPLY VOLTAGE (V)
OUTPUT FREQUENCY (MHz)
Maxim Integrated
MAX31180 toc07
60
MAX31180 toc03
13
13
4
MAX31180
Spread-Spectrum Crystal Multiplier
Pin Configuration
TOP VIEW
+
X1 1
GND 2
CMSEL
3
MAX31180
8
7
6
5
X2
V
CC
SSO
PDN
SMSEL 4
µSOP
Pin Description
PIN
1
2
NAME
X1
GND
FUNCTION
Crystal Drive/Clock Input. A crystal with the proper loading capacitors is connected across X1 and
X2. Instead of a crystal, a clock can be applied at the X1 input.
Signal Ground
Clock Multiplier Select. Tri-level digital input.
0 = 1x
Open = 2x
1 = 4x
Spread-Spectrum Magnitude Select. Tri-level digital input.
0 =
Q0.5%
Open =
Q1.0%
1 =
Q1.5%
Active-Low Power-Down/Spread-Spectrum Disable. Tri-level digital input.
0 = Power-Down/SSO Three-Stated
Open = Power-Up/Spread Spectrum Disabled
1 = Power-Up/Spread Spectrum Enabled
Spread-Spectrum Clock Multiplier Output. Outputs a 1x, 2x, or 4x spread-spectrum version of the
crystal or clock applied at the X1/X2 pins.
Supply Voltage
Crystal Drive Output. A crystal with the proper loading capacitors is connected across X1 and X2.
If a clock is connected to X1, then X2 should be left open circuit.
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
