MK2703SITR

Overview

The MK2703SITR is a PLL audio clock synthesizer manufactured by Renesas Electronics Corporation, originally designed by IDT. It operates within an industrial temperature range of -40°C to +85°C and accepts a 27 MHz crystal or clock input. The device generates a buffered 27 MHz reference clock and a selectable audio clock output via two digital select pins (S0, S1). Supported audio frequencies include 8.192 MHz, 11.2896 MHz, 12.288 MHz, and 24.576 MHz. It utilizes patented analog PLL techniques for zero ppm synthesis error across all clocks.

Feature Summary

• Patented zero ppm synthesis error ensures exact audio clock sampling rates.
• Supports MPEG sampling rates including 32 kHz, 44.1 kHz, 48 kHz, and 96 kHz.
• Operates on a single supply voltage of 3.3 V or 5 V with 25 mA typical current.
• Packaged in an 8-pin SOIC (150 mil) lead-free package.

Applications

• Set-top box systems
• Multimedia applications
• DVD and MPEG-2 based systems

Procurement Notes

Verify component authenticity through authorized channels as the original manufacturer IDT was acquired by Renesas. Confirm that the specific suffix 'SITR' corresponds to the industrial temperature grade (-40°C to +85°C) and tape-and-reel packaging format required for the assembly process.

Selection Notes

Select the MK2703SITR when an industrial temperature rating is required for set-top box or multimedia designs. Ensure the design accommodates a fundamental mode 27 MHz crystal and provides appropriate decoupling capacitors near the VDD and GND pins to minimize lead inductance.

Part Context

This component belongs to the MK2703 family of PLL audio clock synthesizers. The 'SI' suffix indicates the industrial temperature variant (-40°C to +85°C), while 'TR' denotes the tape-and-reel shipping configuration. The device replaces discrete oscillators and VCXOs in board designs.

Replacement Considerations

The datasheet recommends the MK2703B for new designs. Other variants in the family include MK2703SILFTR (industrial, lead-free, reel) and MK2703SLFTR (commercial, lead-free, reel).