Overview
The LMK04828BISQE/NOPB is an ultra-low-noise JESD204B compliant clock jitter cleaner manufactured by Texas Instruments. It is part of the LMK0482x family, which is recognized as the industry's highest performance clock conditioner. This device is designed to provide high-performance clocking solutions with advanced features such as dual loop PLLatinum™ PLL architecture, integrated low-noise VCOs, and dynamic digital delay. It is particularly suited for applications requiring precise and stable clock signals, including JESD204B converters and traditional clocking systems.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 64-Pin WQFN (NKD) |
| Operating Temperature Range | -40°C to 85°C |
| Maximum Clock Output Frequency | 3.1 GHz |
| RMS Jitter (12 kHz to 20 MHz) | 88 fs |
| RMS Jitter (100 Hz to 20 MHz) | 91 fs |
| Noise Floor at 245.76 MHz | -162.5 dBc/Hz |
| Normalized PLL Noise Floor [1 Hz] | -227 dBc/Hz |
| Supply Voltage | 3.15 V to 3.45 V |
| Package Dimensions | 9.0 mm × 9.0 mm × 0.8 mm |
Key Features
- JEDEC JESD204B Support
- Ultra-Low RMS Jitter: 88 fs (12 kHz to 20 MHz), 91 fs (100 Hz to 20 MHz)
- Up to 14 Differential Device Clocks from PLL2
- Up to 7 SYSREF Clocks
- LVPECL, LVDS, HSDS, LCPECL Programmable Outputs from PLL2
- Up to 1 Buffered VCXO/Crystal Output from PLL1
- Dual Loop PLLatinum™ PLL Architecture
- Up to 3 Redundant Input Clocks with Automatic and Manual Switch-Over Modes
- Hitless Switching and LOS (Loss of Signal) Detection
- Integrated Low-Noise Crystal Oscillator Circuit
- Holdover Mode When Input Clocks are Lost
- Precision Digital Delay, Dynamically Adjustable
- 25-ps Step Analog Delay
- Multi-Mode: Dual PLL, Single PLL, and Clock Distribution
Applications
The LMK04828BISQE/NOPB is ideal for various high-performance clocking applications, including:
- JESD204B converters and other high-speed data conversion systems
- Traditional clocking systems requiring stable and precise clock signals
- Telecommunications and networking equipment
- High-speed data acquisition and processing systems
- Aerospace and defense applications where high reliability and precision are critical
Q & A
- What is the primary function of the LMK04828BISQE/NOPB?
The primary function is to act as an ultra-low-noise JESD204B compliant clock jitter cleaner. - What is the maximum clock output frequency of the LMK04828BISQE/NOPB?
The maximum clock output frequency is 3.1 GHz. - What are the supported output formats for the clock signals?
The device supports LVPECL, LVDS, HSDS, LCPECL, and 2xLVCMOS programmable outputs. - How many redundant input clocks does the device support?
The device supports up to 3 redundant input clocks. - What is the operating temperature range of the LMK04828BISQE/NOPB?
The operating temperature range is -40°C to 85°C. - Does the device support holdover mode?
Yes, the device supports holdover mode when input clocks are lost. - What is the normalized PLL noise floor of the device?
The normalized PLL noise floor is -227 dBc/Hz. - Can the device be used in traditional clocking systems?
Yes, the device can be used in traditional clocking systems beyond JESD204B applications. - What is the package type and pin count of the LMK04828BISQE/NOPB?
The package type is 64-Pin WQFN (NKD). - What are some of the key features of the PLLatinum™ PLL architecture?
The PLLatinum™ PLL architecture includes features such as dual loop architecture, hitless switching, and integrated low-noise VCOs.
