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MK2771-16 - VCXO and Set-Top Clock Source

Description

The MK2771-16 is a low cost, low jitter, high performance VCXO and clock synthesizer designed for set-top boxes.

The on-chip Voltage Controlled Crystal Oscillator accepts a 0 to 3V input voltage to cause the output clocks to vary by ±100 ppm.

Features

  • Packaged in 28 pin SSOP (QSOP).
  • On-chip patented VCXO with pull range of 200ppm (minimum).
  • VCXO tuning voltage of 0 to 3V.
  • Processor frequency include 16.66, 20, 25, 32, 40, and 50 MHz.
  • Audio clocks support 32 kHz, 44.1 kHz, 48 kHz and 96 kHz sampling rates.
  • Zero ppm synthesis error in all clocks (all exactly track 27MHz VCXO).
  • Uses an inexpensive 13.5 MHz crystal.
  • Full CMOS output swings with 25mA output drive capability a.

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Datasheet Details

Part number MK2771-16
Manufacturer Integrated Circuit Systems
File Size 66.62 KB
Description VCXO and Set-Top Clock Source
Datasheet download datasheet MK2771-16 Datasheet

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Full PDF Text Transcription

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I C R O C LOC K Description The MK2771-16 is a low cost, low jitter, high performance VCXO and clock synthesizer designed for set-top boxes. The on-chip Voltage Controlled Crystal Oscillator accepts a 0 to 3V input voltage to cause the output clocks to vary by ±100 ppm. Using ICS/MicroClock’s patented VCXO and analog Phase-Locked Loop (PLL) techniques, the device uses an inexpensive 13.5 MHz crystal input to produce multiple output clocks including a selectable processor clock, a selectable audio clock, two communications clocks, a 13.5 MHz clock, and three 27 MHz clocks. All clocks are frequency locked to the 27.00MHz output (and to each other) with zero ppm error, so any output can be used as the VCXO output.
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