AK8133V

Overview

The AK8133V is a low spurious multiclock generator designed for high-quality audio applications. It generates multiple clock frequencies from a 27MHz crystal oscillator or external input using two built-in PLLs and an internal XO. The device provides four frequency-selectable outputs (CLK1-4) and one 27MHz reference output, configured via pin settings S0-S3. It operates on a single supply voltage of 2.85V to 3.6V with typical current consumption of 18.0mA at 3.3V. Key performance metrics include a period jitter of 30ps (typical) and an output lock time of 5ms. The component is housed in a 16-pin SSOP package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Generates up to four selectable clock frequencies plus a 27MHz reference output from a 27MHz source.
• Low jitter performance with 30ps typical period jitter across all outputs.
• Built-in crystal oscillator (XO) and dual PLL circuitry for stable frequency generation.
• Pin-configurable frequency selection for CLK1-4 outputs covering standard audio sampling rates.

Applications

• Personal Video Recorders
• Set-Top-Boxes
• Multi Media Receivers

Procurement Notes

Verify the ordering suffix 'V' corresponds to the industrial temperature range (-40°C to +85°C). Confirm shipping packaging is tape and reel. Ensure power supply decoupling capacitors (0.1mF) are placed close to VDD1, VDD2, and VDD3 pins during integration.

Selection Notes

Select AK8133V for applications requiring operation down to -40°C; use AK8133E for commercial ranges starting at -20°C. Frequency outputs are determined by logic levels on S0-S3 pins. Ensure load capacitance requirements are met: 15pF for CLK1-4 and 25pF for REFOUT.

Part Context

The AK8133V belongs to the AK8133 family of low-power multiclock generators from Asahi Kasei EMD Corporation (AKEMD). It shares the same core functionality as the AK8133E but differs in the specified operating temperature range. Both variants utilize a 16-pin SSOP lead-free package.

Replacement Considerations

The AK8133E is a direct functional substitute within the same package, differing only in the minimum operating temperature (-20°C vs -40°C). No other cross-model substitutes are documented in the provided datasheet.

FAQ

How is the clock output frequency selected?

Frequency selection is configured by setting the logic levels of pins S0, S1, S2, and S3. Internal pull-up resistors exist for S0, S1, and S3, while S2 requires connection to VDD for a high state.

What is the maximum output load capacitance?

The maximum output load capacitance is 15pF for pins CLK1 through CLK4, and 25pF for the REFOUT pin.

Can the AK8133V accept an external clock input?

Yes, it accepts an external 27MHz clock input at the XIN pin (Pin 16) with a minimum amplitude of 1Vpp. In this mode, the XOUT pin should be left open.