The world’s premier supplier o
Clock Generators
Single Clock Generators
AKM is now utilizing its outstanding analog PLL technology for clock generators and other clocking
devices. Known for its extremely low jitter, the PLL’s offer unparalleled performance in products such as
single clock generators, multi-clock generators (fan-out), spread spectrum clock devices, and zero delay
buffers. In addition to the low jitter characteristics, these products offer very low power consumption,
low voltage operation, and small package sizes.
The family of single clock generators allow for selection between two output frequencies. These devices
are PLL-based, and they offer outstanding jitter performance. The package is a 6-pin SON.
Master CLK
(input in MHz)
AK8110
AK8111
AK8112
AK8113
AK8114
AK8115
AK8116
AK8117
27
27
27
27
27
41.538
33.75
27
Output
Frequency 1
36.000
12.288
33.375
74.17582
33.333
27.000
27.000
38.000
Output
Frequency 2
49.500
24.576
67.500
74.250
48.000
74.17582
74.250
38.6667
1σ Jitter
15ps
15ps
15ps
15ps
15ps
15ps
15ps
15ps
Supply
Voltage
2.7
2.7
2.7
2.7
2.7
2.7
2.7
2.7
to 3.6
to
3.6
to 3.6
to 3.6
to 3.6
to 3.6
to 3.6
to 3.6
Supply
Current
3.5mA
3.5mA
3.5mA
3.8mA
3.5mA
3.8mA
3.8mA
3.3mA
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Multi-Clock Generators (fan-outs)
The family of multi-clock generators have four outputs, plus the recovered input clock. Some of the
outputs are capable of generating multiple frequencies, selectable by the user. The device architecture
contains 3 PLL’s and a VCXO or XO. Operating off of a 3.3V nominal power supply, the package for this
family is a 16-TSSOP.
Master
Clock
AK8130
27
CLK 1
74.250
74.1758
54.000
74.250
74.17582
55.000
61.875
68.333
41.85
48.0
12.0
CLK 2
25.000
CLK 3
4.9152
CLK 4
24.576
33.333
Jitter
±120ps
(cycle)
Crystal
VCXO
Supply
Current
16mA
AK8131
27
74.25
66.000
82.000
27.000
54.000
27.000
±120ps
(cycle)
VCXo
16
m
A
AK8132
13.5
16.0
20.0
24.576
54.000
27.000
10ps to 40ps
(period, 1sec)
XO
10mA
Spead Spectrum
(EMI Reduction)
AK8126
• Frequency range: 16Mhz to 18MHz
• Crystal oscillator: 16MHz to MHz
• Modulation ratio:
• Center spread: ±0.5, 0.5, 1.0, 1.5%
• Down spread: -0.5, 1.0, .0, .0%
• Jitter: 100ps max (cycle to cycle)
Zero Delay Buffers
(DDR DRAM)
AK8120
• Operating frequency: 1 to 0MHz
• Output delay: ±90ps
• Low jitter:
• ±0ps (period rms)
• ±5ps (cycle to cycle rms)
• ±75ps (half period rms)
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