Multi Clock Generator for Audio

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The AK8138MV is a member of AKM’s low power multi clock generator family designed for a high quality audio cock with high performance C/N. The AK8138MV generates different frequency clocks from a 27MHz crystal oscillator or external 27MHz clock input. It provides them to up to four outputs configured by pin-setting. Both circuitries of XO and PLL in AK8138MV 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 AK8138MV is available in a 16-pin SSOP package.

Key Features

27MHz Crystal Input or External Input

Four Frequency-Selectable Clock Outputs

One 27MHz-Reference Output

Selectable Clock out Frequencies:

- CLK1: 24.576MHz

- CLK2: 2.048,4.096,8.192,11.2896,12.288,


- CLK3: 6.144,8.192,11.2896,12.288,


- CLK4: 8.4672,11.2896,13.824,


Built-in XO

Low Jitter Performance

- Period Jitter:

30 psec (Typ.) at CLK1-4

- Long Term Jitter:

60 psec (Typ.) at CLK1-4

Low Current Consumption:

18.0mA (Typ.) at 3.3V, S[3:0]=’HHHH’

Supply Voltage:

2.85V to 3.6V

Operating Temperature Range:

-40℃ to +85℃


16-pin SSOP (Lead free, Halogen free)

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Block Diagram

Block Diagram

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