Overview
The LMK04828BISQX/NOPB is a high-performance clock jitter cleaner from Texas Instruments, part of the LMK0482x family. This device is designed to provide ultra-low noise and high precision clocking solutions, particularly for applications requiring JEDEC JESD204B compliance. It features a dual-loop PLL architecture, integrated low-noise VCOs, and advanced clock management capabilities, making it ideal for various high-performance clocking needs.
Key Specifications
| Parameter | Specification |
|---|---|
| Package | 64-Pin WQFN (NKD) |
| Operating Temperature Range | -40°C to 85°C |
| VCO0 Frequency | 2370 MHz to 2630 MHz |
| VCO1 Frequency | 2920 MHz to 3080 MHz |
| 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 |
| Maximum Clock Output Frequency | 3.1 GHz |
| Output Types | LVPECL, LVDS, HSDS, LCPECL, LVCMOS |
| Supply Voltage | 3.15 V to 3.45 V |
| PCB Temperature Support | Up to 105°C (measured at thermal pad) |
Key Features
- JEDEC JESD204B Support
- Ultra-Low RMS Jitter: 88 fs (12 kHz to 20 MHz) and 91 fs (100 Hz to 20 MHz)
- Integrated Low-Noise VCOs
- Up to 14 Differential Device Clocks from PLL2
- Up to 7 SYSREF Clocks
- Programmable Outputs: LVPECL, LVDS, HSDS, LCPECL, LVCMOS
- Dual Loop PLLatinum™ PLL Architecture
- Automatic and Manual Switch-Over Modes with Hitless Switching and LOS
- 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
- Wireless Infrastructure
- Data Converter Clocking
- Networking, SONET/SDH, DSLAM
- Medical, Video, Military, Aerospace
- Test and Measurement
Q & A
- What is the primary function of the LMK04828BISQX/NOPB?
The primary function is to provide ultra-low noise and high precision clocking solutions, particularly for JEDEC JESD204B compliant applications.
- What are the operating temperature ranges for this device?
The operating temperature range is -40°C to 85°C.
- What are the frequencies of the integrated VCOs?
VCO0 operates from 2370 MHz to 2630 MHz, and VCO1 operates from 2920 MHz to 3080 MHz.
- What is the maximum clock output frequency?
The maximum clock output frequency is 3.1 GHz.
- What types of output signals can the LMK04828BISQX/NOPB generate?
The device can generate LVPECL, LVDS, HSDS, LCPECL, and LVCMOS output signals.
- Does the device support multiple PLL modes?
Yes, it supports Dual PLL, Single PLL, and Clock Distribution modes.
- What is the purpose of the holdover mode?
The holdover mode allows the device to maintain its clock output when the input clocks are lost.
- Can the device handle redundant input clocks?
Yes, it can handle up to 3 redundant input clocks with automatic and manual switch-over modes.
- What is the significance of the dual-loop PLL architecture?
The dual-loop PLL architecture enhances the device's performance by providing better noise and jitter characteristics.
- What are some common applications for the LMK04828BISQX/NOPB?
Common applications include wireless infrastructure, data converter clocking, networking, medical, video, military, aerospace, and test and measurement.
