MK3723

PRELIMINARY INFORMATION I C R O C LOC K Description The MK3723 is ICS/MicroClock’s lowest cost, low jitter, high performance 3.3 volt VCXO designed to replace expensive VCXO modules. The on-chip Voltage Controlled Crystal Oscillator accepts a 0 to 3.3 V input voltage to cause the output clocks to vary by ±100 ppm. Using ICS/MicroClock’s patented VCXO techniques, the device uses an inexpensive external pullable crystal in the range of 16 - 28 MHz to produce a VCXO output clock that is a divide by 2, 4, 6, or 8 or the crystal frequency. ICS/MicroClock manufactures the largest variety of Set-Top Box and multimedia clock synthesizers for all applications. If more clock outputs are needed, see the MK3732 or MK377x family of parts. Consult ICS/MicroClock to eliminate VCXOs, crystals and oscillators from your board. MK3723 Low Cost 3.3 Volt VCXO Features Packaged in 8 pin SOIC 3.3 V only operating voltage 2 MHz to 14 MHz VCXO operation Ideal for 26 MHz from a 28 MHz crystal Uses an inexpensive external crystal On-chip VCXO (patented) with pull range of 200 ppm (minimum) VCXO tuning voltage of 0 to 3.3 V 12 mA output drive capability at TTL levels Advanced, low power, sub-micron CMOS process For frequencies between 16.2 MHz and 28 MHz use the MK3721S. For higher than 28 MHz, use the MK3732-05 Block Diagram VIN X1 16 -28 MHz pullable crystal X2 Voltage Controlled Crystal Oscillator ÷N Output Buffer VCXOCLK S1, S0 MDS 3723 A 1 Revision 082800 Integrat...