AK8136A Datasheet, PDF (1/18 Pages) Asahi Kasei Microsystems – Low Power Multiclock Generator with XO

AK8136A
Low Power
Multiclock Generator with VCXO
AK8136A
Features
27MHz Crystal Input
One 27MHz-Reference Output
2 wire serial register interface
Selectable Clock out Frequencies:
- 148.352, 148.5MHz
- 100.71, 108MHz
- 22.5792, 24.576, 33.8688, 36.864MHz
- 27.0MHz
Built-in VCXO
- Pull Range: ±150ppm (typ.)
Low Jitter Performance
- Period Jitter:
150 psec (Typ.) at CLK2,CLK3,CLK4
- TIE：
100 psec (Max) at CLK1p,CLK1n
- Long term jitter：
160 psec (Typ.) at REFOUT
Low Current Consumption:
32 mA (Typ.) at 3.3V
Supply Voltage:
3.0 – 3.6V
Operating Temperature Range:
-20 to +85℃
Package:
20-pin SSOP (Lead free, Halogen free)
Description
The AK8136A 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 AK8136A
generates different frequency clocks from a 27MHz
crystal oscillator and provides them to up to four
outputs configured by register-setting. The on-chip
VCXO accepts a voltage control input to allow the
output clocks to vary by ±150 ppm for
synchronizing to the external clock system. Both
circuitries of VCXO and PLL in AK8136A 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 AK8136A is available
in a 20-pin SSOP package.
Applications
 Set-Top-Boxes
VDD
XI
XO
VIN
Voltage
Controlled
Crystal
Oscillator
Full PD
SDA
Control
SCL
Register
PLL1
PLL2
PLL3
CLK1p
CLK1n
CLK2
CLK3
CLK4
REFOUT
VREF
MS1108-E-04
GND
AK8136A Multi Clock Generator
-1-
Dec-2013