AK8151A

1.8/3.3V Multi Clock Generator

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Description

The AK8151A is a single-PLL clock generator IC with two outputs. The high performance PLL locks to the master clock input, generating a low jitter, highly accurate clock output without an external crystal.

The integrated PLL generates 60MHz or 72MHz with 27 MHz input clock. The output frequency is selectable by SEL pin.

The AK8151A has two kinds of voltage supply pins. One is for the core and the other is for each of the two output buffers. The core requires 1.8V supply and the output buffers require 1.7V - 1.9V or 2.7V - 3.6V supply. Not only the output but also the input accepts 1.8V or 3.3V input clock from Crystal Oscillator.

Key Features

• Input Frequency:

27 MHz (1.8V or 3.3V)

• PLL Output Frequency:

Selectable by SEL pin setting

60 MHz or 72 MHz (1.8V or 3.3V)

• Low Jitter Performance:

Period (1σ): 25 ps typ.

• Low Current Consumption:

VDDO1 = 3.3V, VDDO2=1.8V, No load

11 mW Typ. (CLKOUT=60MHz)

13 mW Typ. (CLKOUT=72MHz)

• Output Load:

15 pF Max

• Supply Voltage:

VDD    : 1.7-1.9 V

VDDO1, 2: 1.7-1.9 V or 2.7V-3.6V

• Operating Temperature Range:

-20 to +85℃

• Package:

8-pin USON (2.0mm x 2.0mm)

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Block Diagram

Block Diagram

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