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PDF AK8130AH Data sheet ( Hoja de datos )
| Número de pieza | AK8130AH | |
| Descripción | Multi Clock Generator | |
| Fabricantes | AKM | |
| Logotipo |  |
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Low Power
Multiclock Generator with VCXO
AK8130AH
Features
27MHz Crystal Input
Four Frequency-Selectable Clock Outputs
One 27MHz-Reference Output
Selectable Clock out Frequencies:
- 54.000,74.1758, 74.250MHz
- 25.000MHz
- 4.9152, 12.000, 48.000MHz
- 24.576, 33.333MHz
Built-in VCXO
- Pull Range: ±110ppm (Min.)
Low Jitter Performance
- Period Jitter:
150 psec (Typ.) at CLK1-4
- Long Term Jitter :
160 psec (Typ.) at REFOUT
Low Current Consumption:
16.5mA (Typ.) at 3.3V
Supply Voltage:
3.0 – 3.6V
Operating Temperature Range:
-40 to +85℃
Package:
16-pin TSSOP (Lead free)
Description
The AK8130AH is a member of AKM’s low power
multi clock generator family designed for a feature
rich DTV or STB, requiring a range of system
clocks with high performance. The AK8130AH
generates different frequency clocks from a 27MHz
crystal oscillator and provides them to up to four
outputs configured by pin-setting. The on-chip
VCXO accepts a voltage control input to allow the
output clocks to vary by ±110 ppm for
synchronizing to the external clock system. Both
circuitries of VCXO and PLL in AK8130AH are
derived from AKM’s long-term-experienced clock
device technology, and enable clock output to
perform low jitter and to operate with very low
current consumption. The AK8130AH is available
in a 16-pin TSSOP package.
Applications
Digital TV Sets
Personal Video Recorders
Set-Top-Boxes
Multi Media Receivers
Block Diagram
X1
Voltage
Controlled
Crystal
X2 Oscillator
VIN
S0
S1
S2
VDD
PLL1
PLL1
PLL2
PLL3
Divide
Logic
and
Output
Control
CLK1
CLK2
CLK3
CLK4
REFOUT
GND
AK8130AH Multi Clock Generator
MS0631-E-03
-1-
Dec-2013
http://www.Datasheet4U.com
1 page  
AK8130AH
Output clock frequency selection
The AK8130AH generates a range of low-jitter and hi-accuracy clock frequencies with three built-in PLLs
and provides to up to four assigned outputs. A frequency selection at assigned output pin is configured by
pin-setting of S0 (Pin2), S1 (Pin3), and S2 (Pin14).
The selectable frequency is shown in Table 1..
Table 1: Clock output Frequency
Selection Pin
S2
(Pin 14)
L
L
L
L
H
H
H
H
S1
(Pin 3)
L
L
H
H
L
L
H
H
S0
(Pin 2)
L
H
L
H
L
H
L
H
CLK1
(Pin 7)
74.250
74.250
74.1758
74.1758
74.1758
74.1758
74.1758
54.000
Clock Output Frequency (MHz)
CLK2
(Pin 8)
25.000
25.000
25.000
25.000
25.000
25.000
25.000
OFF
CLK3
(Pin 10)
48.000
12.000
48.000
12.000
OFF
4.9152
4.9152
4.9152
CLK4
(Pin 11)
33.333
OFF
33.333
OFF
33.333
OFF
24.576
24.576
Voltage Control Crystal Oscillator (VCXO)
The AK8130AH has a voltage control crystal oscillator (VCXO), featuring fine frequency tuning for 27MHz
of primary clock frequency by external DC voltage control. This tuning enables output clock frequency to
synchronize the external clock system. VIN (Pin 4) accepts DC voltage control from a processor or a
system controller, and pulls the primary frequency of crystal to higher or lower. This pulling range is
determined by crystal characteristic, on-chip load capacitor, and stray capacitance of PCB. The
AK8130AH is designed to range ±110ppm of primary frequency in AKM’s authorized condition, and the
typical pulling profile is shown in Figure 1. For details about the condition and other specific crystal
application case, refer the AK8130 Family application note.
150.0
100.0
50.0
0.0
0
-50.0
-100.0
-150.0
27.0MHz VCXO Characteristics NDK NX5032GA （CL=8.0pF）
(Cext1=12.0pF, Cext2=1.0pF)
0.5 1 1.5 2 2.5 3
VIN(V)
3.5
Figure 1: Typical VCXO Pulling Profile
MS0631-E-03
-5-
Dec-2013
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet AK8130AH.PDF ] | |
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