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PDF AK8135S Data sheet ( Hoja de datos )
| Número de pieza | AK8135S | |
| Descripción | Multi Clock Generator | |
| Fabricantes | AKM | |
| Logotipo |  |
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AK8135S
Preliminary Low Power
Multiclock Generator with VCFS
AK8135S
Features
30.000MHz Crystal Input
One 30.000MHz-Reference Output
Selectable Clock out Frequencies:
- 25.000 MHz at CLK1
- 30.000 MHz at CLK2
- 33.000 MHz at CLK3-5
- 27.000 MHz at REF1-3
Built-in two VCFS
- VCFS1 Pull Range: ±120ppm (typ.)
- VCFS2 Pull Range: ±135ppm (typ.)
Low Jitter Performance
- Cycle to Cycle Jitter:
33.3 psec (Max.) at CLK1
50 psec (Typ.) at CLK2-5
- Period Jitter:
25 psec (Typ.) at REF1-3
- Long term jitter：
66.7 psec (Typ.) at REF1-3
Low Current Consumption:
(29) mA (Typ.) at 3.3V
Supply Voltage:
3.0 – 3.6V
Operating Temperature Range:
-20 to +85℃
Package:
48-pin LQFP (Lead free)
Description
AK8135S is a member of AKM’s low power multi
clock generator family designed for Recorders,
DTVs or STBs, requiring a range of system clocks
with high performance. AK8135S generates
different frequency clocks from a 30.000MHz
crystal oscillator and provides them to eight
outputs. Th e on-chip VCFS (Voltage Controlled
Frequency Synthesizer) accepts a voltage control
input to allow the output clocks to vary by
±120/135 ppm for synchronizing to the external
clock system.
Both circuitries of VCFS and PLL in AK8135S 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.
AK8135S is available in a 48-pin LQFP package.
Applications
• HDD, DVD, BD Recorder
• DTV
• Set-Top-Boxes
draft-E-00
-1-
Apr-11
http://www.Datasheet4U.com
1 page  
AK8135S
38 CLK2 DO
Reference Clock Output of XO based on 30.000MHz Crystal
39 CLK5PD
DI
CLK5 pin Mode Select pin
“H”: Enable, REF1 pin outputs 33.000MHz. “L”: Disable, CLK5 pin is “L”.
(1)
40 VDD7 PWR
Power Supply 7
41 GND7 PWR
Ground 7
Reference Clock Output 3 from VCFS2
42 REF3 DO Output frequency is 27.00MHz.
43 GND8 PWR
Ground 8
44 VDD8 PWR
Power Supply 8
45 VDD2 PWR
Power Supply 2
46 GND2 PWR
Ground 2
47 GND1 PWR
Ground 1
48 GND1 PWR
Ground 1
(1) Internal pull up 57kΩ
Ordering Information
Part Number
AK8135S
Marking
AK8135S
Shipping Packaging
Tape and Reel
Package
48-pin LQFP
Temperature Range
-20 to 85℃
draft-E-00
-5-
Apr-11
5 Page 
Typical Connection Diagram
PWM1
PWM2
AK8135S
C10
+
GND
VDD=3.3[V]
AK8135
RLPF1
RLPF2
X’tal = 30.000[MHz]
Cext1
Cext2
CLPF1
CLPF3
CLPF2
CLPF4
C6
CLK2 = 30.000[MHz]
REF3 = 27.000[MHz]
SW2
C7
C8
C9
37:GND1
38:CLK2
39:CLK5PD
40:VDD7
41:GND7
42:REF3
43:GND8
44:VDD8
45:VDD2
46:GND2
48:GND1
24:GND1
23:TEST3
22:GND1
21:VDD5
20:GND5
19:REF1
18:VDD4
17:GND4
16:GND1
15:REF2
14:GND1
13:REF2PD
C5
C4
SW1
REF1 = 27.000[MHz]
REF2 = 27.000[MHz]
C1 C2 C3
GND
draft-E-00
Figure 5: Typical Connection Diagram
- 11 -
Apr-11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AK8135S.PDF ] | |
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