Overview
Description
The MK3727H is a low-drive, low-cost, single-output 3.3V Voltage Controlled Crystal Oscillator (VCXO) and PLL clock synthesizer designed to replace expensive VCXOs and crystals. The patented on-chip VCXO accepts a 0V to 3.3V input voltage to cause the output clocks to vary by ±115ppm minimum. Using our analog Phase-Locked Loop (PLL) techniques, the devices use an external, fundamental mode 13.5MHz pullable crystal input to produce output clocks of 27MHz. The drive parameters are optimized for low EMI. The frequency of the on-chip VCXO is adjusted by an external control voltage input into pin VIN. Because VIN is a high-impedance input, it can be driven directly from a PWM RC integrator circuit.
Features
- Packaged in an 8-pin SOIC
- Operating voltage of 3.3 V (±5%)
- Single pullable output clock of 24MHz to 36MHz
- Uses a fundamental mode 12MHz to 18MHz pullable crystal
- On-chip patented VCXO with pull range of 230ppm (minimum)
- VCXO tuning voltage of 0V to 3.3V
- Low-drive output stage to reduce EMI
- Advanced, low-power, sub-micron CMOS process
- RoHS 5 (green) or RoHS 6 (green and lead free) compliant package
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 233 KB | |
| Application Note | PDF 334 KB | |
| Application Note | PDF 222 KB | |
| Application Note | PDF 218 KB | |
| Application Note | PDF 155 KB | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| SOIC | 8 | C | Yes | Tube | ||
| SOIC | 8 | C | Yes | Reel |
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