Overview
The LMK04832NKDR, produced by Texas Instruments, is an ultra-low-noise, 3.2-GHz clock jitter cleaner designed to support JESD204B compliant systems. This device is part of the Clock/Timing - Clock Generators, PLLs category and is known for its high performance and flexibility in clocking applications. It features dual phase-locked loops (PLLs), dynamic digital delay, and holdover modes, making it ideal for various high-performance clocking needs. The LMK04832NKDR is pin-compatible with the LMK0482x family of devices and supports a wide range of clock output formats including CML, LVPECL, LCPECL, LVDS, and 2xLVCMOS.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Junction Temperature (TJ) | - | - | 125 | °C |
| Ambient Temperature (TA) | -40 | 25 | 85 | °C |
| PCB Temperature (TPCB) | - | - | 105 | °C |
| Supply Voltage (VCC) | 3.15 | 3.3 | 3.45 | V |
| PLL2 Reference Input Frequency (fOSCin) | - | - | 500 | MHz |
| PLL2 Reference Clock Slew Rate (SLEWOSCin) | 0.15 | 0.5 | - | V/ns |
| Phase Noise at 10 kHz Offset (PN10 kHz) | -128 | - | - | dBc/Hz |
Key Features
- Ultra-low noise performance with support for JESD204B compliant systems.
- Dual phase-locked loops (PLLs) with the option to operate in dual PLL, single PLL, or clock distribution modes.
- Dynamic digital delay and holdover modes for enhanced clock stability.
- Programmable clock output formats: CML, LVPECL, LCPECL, LVDS, and 2xLVCMOS.
- Up to 15 programmable clock outputs, including 14 from PLL2 and 1 buffered VCXO/XO output.
- SYSREF clock generation with both DC and AC coupling options.
- Support for high-temperature operation up to 105°C PCB temperature.
Applications
- Test and Measurement equipment.
- RADAR systems.
- Microwave Backhaul infrastructure.
- Data Converter clocking in various high-performance systems.
Q & A
- What is the primary function of the LMK04832NKDR?
The LMK04832NKDR is an ultra-low-noise clock jitter cleaner designed to support JESD204B compliant systems, providing high-performance clocking solutions.
- What are the supported clock output formats?
The device supports CML, LVPECL, LCPECL, LVDS, and 2xLVCMOS clock output formats.
- How many programmable clock outputs does the LMK04832NKDR have?
The device has up to 15 programmable clock outputs, including 14 from PLL2 and 1 buffered VCXO/XO output.
- What is the maximum operating temperature for the LMK04832NKDR?
The device can operate up to a PCB temperature of 105°C.
- What are some common applications of the LMK04832NKDR?
Common applications include Test and Measurement, RADAR, Microwave Backhaul, and Data Converter clocking.
- Does the LMK04832NKDR support dual PLL operation?
Yes, the device can operate in dual PLL, single PLL, or clock distribution modes.
- What is the significance of the dynamic digital delay feature?
The dynamic digital delay feature allows for precise control over clock timing, enhancing the overall clock stability and performance.
- How does the holdover mode function in the LMK04832NKDR?
The holdover mode allows the device to maintain clock stability even when the reference clock is lost, using the last known frequency and phase information.
- What is SYSREF clock generation in the context of the LMK04832NKDR?
SYSREF clock generation refers to the device's ability to produce a synchronization reference clock, essential for JESD204B systems, with both DC and AC coupling options.
- Can the LMK04832NKDR be programmed using specific software tools?
Yes, the device can be programmed using Texas Instruments' TICS Pro software.
