Overview
The LMK04906BISQX/NOPB is a high-performance clock jitter cleaner/multiplier produced by Texas Instruments. It is designed to provide superior clock jitter cleaning, generation, and distribution, making it ideal for high-performance timing applications. The device features advanced PLL architecture, including dual loop PLLatinum™ PLL, integrated low-noise crystal oscillator circuit, and holdover mode when input clocks are lost. It operates within an industrial temperature range of –40 to 85 °C and supports a voltage range of 3.15-V to 3.45-V.
Key Specifications
| Specification | Value |
|---|---|
| Package | WQFN (NKD) with 64 pins |
| Operating Temperature Range (°C) | –40 to 85 |
| Input Clock Frequency Range | 1 kHz to 500 MHz |
| Output Clock Frequency Range | 284 kHz to 2.6 GHz |
| RMS Jitter (12 kHz to 20 MHz) | 100 fs |
| RMS Jitter (100 Hz to 20 MHz) | 123 fs |
| Phase Detector Rate | Up to 155 MHz |
| Output Types | LVPECL, LVDS, or LVCMOS |
| Number of Differential Outputs | Up to 6 |
| Number of Single-Ended Outputs | Up to 12 |
| VCXO/Crystal Buffered Outputs | Up to 5 |
Key Features
- Ultralow RMS jitter: 100 fs (12 kHz to 20 MHz) and 123 fs (100 Hz to 20 MHz).
- Dual loop PLLatinum™ PLL architecture with integrated low-noise crystal oscillator circuit and holdover mode when input clocks are lost.
- Three redundant input clocks with automatic and manual switch-over modes.
- 50% duty cycle output divides, 1 to 1045 (even and odd).
- LVPECL, LVDS, or LVCMOS programmable outputs.
- Precision digital delay, fixed or dynamically adjustable, and 25-ps step analog delay control.
- Multi-mode operation: dual PLL, single PLL, and clock distribution.
- Support for clock rates up to 2600 MHz and 0-delay mode.
- Three default clock outputs at power up.
Applications
The LMK04906BISQX/NOPB is versatile and can be used in various high-performance timing applications, including:
- SONET (Synchronous Optical Networking)
- Ethernet
- Fibre Channel
- Multi-mode Wireless Base Stations
Q & A
- What is the primary function of the LMK04906BISQX/NOPB? The primary function is to act as a high-performance clock jitter cleaner/multiplier.
- What is the operating temperature range of the LMK04906BISQX/NOPB? The operating temperature range is –40 to 85 °C.
- What types of output signals does the LMK04906BISQX/NOPB support? It supports LVPECL, LVDS, or LVCMOS output signals.
- How many differential outputs can the LMK04906BISQX/NOPB provide? It can provide up to 6 differential outputs.
- What is the maximum clock rate supported by the LMK04906BISQX/NOPB? The maximum clock rate is up to 2600 MHz.
- Does the LMK04906BISQX/NOPB support holdover mode? Yes, it supports holdover mode when input clocks are lost.
- How are the input clock frequency and clock multiplication ratio programmed? They are programmable through a SPI interface.
- What are some of the key applications for the LMK04906BISQX/NOPB? Key applications include SONET, Ethernet, Fibre Channel, and multi-mode Wireless Base Stations.
- What is the package type and pin count of the LMK04906BISQX/NOPB? The package type is WQFN (NKD) with 64 pins.
- What is the voltage operation range of the LMK04906BISQX/NOPB? The voltage operation range is 3.15-V to 3.45-V.
