Overview
The LMK00301SQX/NOPB is a 3-GHz, 10-output differential fanout buffer and level translator produced by Texas Instruments. This component is designed for high-frequency, low-jitter clock and data distribution, making it ideal for various high-speed applications. It features a 3:1 input multiplexer, accepting inputs from two universal inputs and one crystal input, and distributes the selected clock to two banks of five differential outputs and one LVCMOS output. The device operates from a 3.3-V core supply and three independent 3.3-V or 2.5-V output supplies, ensuring high performance, versatility, and power efficiency.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LMK00301SQX/NOPB |
| Package Type | WQFN-48 |
| Operating Temperature Range (°C) | -40 to 85 |
| Input Frequency Range | Up to 3.1 GHz (universal inputs), 10 MHz to 40 MHz (crystal input) |
| Output Types | LVPECL, LVDS, HCSL, Hi-Z (selectable per bank), LVCMOS |
| Core Supply Voltage | 3.3 V ± 5% |
| Output Supply Voltages | 3.3 V or 2.5 V ± 5% (three independent supplies) |
| Additive Jitter (RMS) | 20 fs (10 kHz to 1 MHz), 51 fs (12 kHz to 20 MHz) at 156.25 MHz |
| PSRR (dBc) | -65 dBc (LVPECL), -76 dBc (LVDS) at 156.25 MHz |
Key Features
- 3:1 input multiplexer with two universal inputs and one crystal input
- Two banks of five differential outputs each, configurable as LVPECL, LVDS, HCSL, or Hi-Z
- LVCMOS output with synchronous enable input for runt-pulse-free operation
- High frequency range: LVPECL (DC to 3100 MHz), LVDS (DC to 2100 MHz), HCSL (DC to 800 MHz), LVCMOS (DC to 250 MHz)
- Low additive jitter: 20 fs RMS (10 kHz to 1 MHz), 51 fs RMS (12 kHz to 20 MHz) at 156.25 MHz
- High PSRR: –65 dBc (LVPECL) and –76 dBc (LVDS) at 156.25 MHz
- Pin-controlled configuration
- Industrial temperature range: –40°C to +85°C
Applications
The LMK00301SQX/NOPB is suitable for a variety of high-speed applications, including:
- High-frequency clock and data distribution in telecommunications and networking equipment
- Data centers and cloud infrastructure
- High-performance computing and servers
- Wireless communication systems
- Medical and industrial imaging equipment
Q & A
- What is the maximum frequency of the universal inputs on the LMK00301SQX/NOPB?
The universal inputs can operate up to 3.1 GHz. - What types of output signals can the LMK00301SQX/NOPB generate?
The device can generate LVPECL, LVDS, HCSL, Hi-Z, and LVCMOS output signals. - What is the operating temperature range of the LMK00301SQX/NOPB?
The operating temperature range is -40°C to 85°C. - How many differential output banks does the LMK00301SQX/NOPB have?
The device has two banks of five differential outputs each. - What is the additive jitter of the LMK00301SQX/NOPB at 156.25 MHz?
The additive jitter is 20 fs RMS (10 kHz to 1 MHz) and 51 fs RMS (12 kHz to 20 MHz). - What are the core and output supply voltages for the LMK00301SQX/NOPB?
The core supply voltage is 3.3 V ± 5%, and the output supplies can be either 3.3 V or 2.5 V ± 5%. - Does the LMK00301SQX/NOPB have power supply sequencing requirements?
No, the LMK00301SQX/NOPB does not have power supply sequencing requirements between the core and output supply domains. - What is the package type of the LMK00301SQX/NOPB?
The package type is WQFN-48. - What is the PSRR of the LMK00301SQX/NOPB at 156.25 MHz?
The PSRR is -65 dBc (LVPECL) and -76 dBc (LVDS) at 156.25 MHz. - Can the LMK00301SQX/NOPB be used in industrial environments?
Yes, it is suitable for industrial environments due to its operating temperature range and robust design.
