Multi Clock Generator with VCXO

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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.

Key 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℃


20-pin SSOP (Lead free, Halogen free)

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Block Diagram

Block Diagram

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