AK8128MV

Overview

The AK8128MV is a low-power multi-clock generator designed for high-quality audio clock applications. It accepts external input frequencies of 2.8224, 3.072, 11.2896, 12.288, or 27.000 MHz and generates selectable output clocks via two built-in PLLs. CLK1 supports 24.576, 45.000, or 46.40625 MHz, while CLK2 provides 11.2896 MHz or an off state. The device operates on a 3.0V to 3.6V supply with typical current consumption of 8.0 mA at 3.3V. It features low jitter performance, with period jitter typically at 20 ps and long-term jitter at 40 ps. The component is housed in a 10-pin TMSOP package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Generates multiple audio-grade clock frequencies from various external inputs using dual PLL technology.
• Low jitter performance: 20 ps typical period jitter and 40 ps typical long-term jitter.
• Configurable outputs via S0 and S1 pins; CLK1 offers up to three frequency options, CLK2 offers one or off.
• Low power consumption of 8.0 mA (typical) at 3.3V supply voltage.

Applications

• Digital Television
• Personal Video Recorders
• Set-Top Boxes
• Multi Media Receivers
• Digital Still Camera

Procurement Notes

Verify the specific ordering suffix and packaging configuration when sourcing. The datasheet indicates availability in tape and reel packaging. Confirm RoHS compliance status and lead-free assembly details directly with Asahi Kasei Microdevices Corporation (AKM) or authorized distributors prior to procurement.

Selection Notes

Select the AK8128MV based on required output frequencies and available external input clock sources. Ensure the design accommodates the 3.0V to 3.6V operating voltage range and the 15 pF maximum output load capacitance. PCB layout must follow guidelines regarding decoupling capacitors near VDD pins and ground plane connections to maintain specified jitter performance.

Part Context

The AK8128MV belongs to AKM’s low-power multi-clock generator family. It utilizes CMOS process technology and is intended for applications requiring high-performance clock signals with low noise. The device integrates divide logic and output control circuits derived from AKM's clock device technology experience.

Replacement Considerations

No public confirmed substitute part numbers are documented in the provided source material.

FAQ

How are the output frequencies selected?

Output frequencies are configured by setting the logic levels of the S0 (Pin 8) and S1 (Pin 7) pins. These pins have internal pull-up/pull-down resistors that determine the default states if left open or tied to specific voltages.

What is the maximum output load capacitance?

The maximum output load capacitance for pins CLK1 and CLK2 is 15 pF.

Can the AK8128MV operate with a 5V supply?

No. The recommended operating supply voltage range is 3.0V to 3.6V. The absolute maximum rating for supply voltage is 4.6V.