MK2703S

Overview

The MK2703S is a PLL audio clock synthesizer designed for set-top box and multimedia systems. It accepts a 27 MHz crystal or clock input to generate buffered reference and selectable audio clocks. Operating at 3.3 V or 5 V, it supports MPEG sampling rates of 32 kHz, 44.1 kHz, 48 kHz, and 96 kHz via S1/S0 pin selection. The device features zero ppm synthesis error, low jitter (±190 ps), and operates within a commercial temperature range of 0 to +70 °C in an 8-pin SOIC package.

Feature Summary

• Generates 8.192 MHz, 11.2896 MHz, 12.288 MHz, or 24.576 MHz audio clocks from a 27 MHz input
• Zero ppm frequency synthesis error with all frequencies locked
• Operates on 3.3 V or 5 V supply with sub-micron CMOS process
• Packaged in 8-pin SOIC with internal pull-up resistors on select pins

Applications

• Set-top box systems
• Multimedia systems
• MPEG audio sampling rate generation

Procurement Notes

Verify the specific suffix for temperature rating and packaging format. The 'MK2703S' denotes the commercial grade (0 to +70 °C) version. Confirm whether the required unit is in tube or tape and reel configuration, as indicated by the 'TR' suffix in ordering codes. Ensure lead-free ('LF') status is confirmed if environmental compliance is required.

Selection Notes

Select the MK2703S for commercial temperature applications requiring 3.3 V or 5 V operation. Use the MK2703SI variant if industrial temperature range (-40 to +85 °C) is necessary. Frequency output is determined by connecting S0 and S1 pins to VDD or GND according to the provided truth table. Ensure external crystal load capacitors are calculated based on the specific crystal's load capacitance requirements.

Part Context

The MK2703 series was manufactured by Integrated Device Technology (IDT). Renesas Electronics Corporation acquired IDT, making this part part of their portfolio. The datasheet indicates that non-green parts reached End-of-Life (EOL) on May 13, 2010. New designs are recommended to use the MK2703B model.

Replacement Considerations

The datasheet explicitly recommends the MK2703B for new designs. No other direct substitute part numbers are listed in the provided documentation.