The CLKGEN01B is a low-jitter, single-output, I2C programmable clock generator designed for high-end ADC in SDR applications. It is suitable for generating a stable, low-noise clock signal with a wide tunable frequency range.
- Power Voltage: Max 5V, 160mA
- Core Power Voltage: +1.8V, 2.7V, 3.3V (depends on chip type)
- Frequency Range: 10 - 1500 MHz (depends on chip type, usually 10 - 810MHz)
- Phase Jitter: < 0.3ps for Si570 types
The circuit is optimized for direct connection to a microprocessor with similar or higher output logic levels over the Si5XX chip. A voltage level translator is integrated for applications requiring different voltage levels. The internal lower voltage can be stabilized by the integrated linear voltage stabilizer. The module output is differential, but a single-sided CMOS output chip can be populated.
The CLKGEN01B module can be a significant source of noise due to its signal-generator nature. Proper EMI isolation is necessary, which can be achieved using a high conductive base like ALBASE.
The module is mounted on a base using four screws. To ensure proper shielding, it is recommended to secure all screws with a conductive base.
On startup, a preset frequency is sent at the output. There is an option to calibrate the clock source via the I2C bus.
In combination with other modules, the generator can be tuned via a computer. One simple solution is using the PIC18F4550v01A module and firmware, allowing the use of any software compatible with the design, such as USBSynth or CFGSR.
- CLKGEN01B Datasheet
- Si570 Datasheet
- Buy CLKGEN01B
- PIC Firmware