Overview
The LMK61E2BAA-SIAT is an ultra-low jitter, fully programmable oscillator manufactured by Texas Instruments. This device is part of the LMK61E2 series and is designed to provide high-performance timing solutions. It features a fractional-N frequency synthesizer with an integrated VCO, allowing for the generation of commonly used reference clocks. The oscillator is housed in a compact 7x5mm, 8-pin QFM (SIA) package and operates over an industrial temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Part Number | LMK61E2BAA-SIAT | |
| Package Type | 8-Pin QFM (SIA) | |
| Package Dimensions | 7 mm x 5 mm x 0.8 mm | |
| Operating Temperature Range | -40°C to 85°C | |
| Output Frequency (Max) | 1000 MHz | |
| Output Levels | LVPECL, LVDS, HCSL | |
| Jitter | 0.1 ps (typical), 90 fs RMS (typical for fOUT > 100 MHz) | |
| Frequency Tolerance | ±50 ppm | |
| VCC Core | 3.3 V ± 5% | |
| Special Features | Programmable with EEPROM, I2C interface |
Key Features
- Ultra-Low Jitter: The LMK61E2BAA-SIAT offers ultra-low jitter performance, with a typical jitter of 90 fs RMS for frequencies above 100 MHz.
- Programmable Output: The device features an integrated EEPROM and I2C interface, allowing for user-configurable default settings and in-system programming.
- Flexible Output Formats: Outputs can be configured as LVPECL, LVDS, or HCSL, with specific frequency limits for each format (e.g., LVPECL up to 1 GHz, LVDS up to 900 MHz, HCSL up to 400 MHz).
- Robust Supply Noise Immunity: The device has a high power supply rejection ratio (PSRR) of -70 dBc, ensuring robust supply noise immunity.
- Industrial Temperature Range: Operates over an industrial temperature range of -40°C to 85°C.
- Compact Package: Housed in a compact 7x5mm, 8-pin QFM (SIA) package).
Applications
- High-Performance Timing: Suitable as a high-performance replacement for crystal-, SAW-, or silicon-based oscillators).
- Networking Equipment: Used in switches, routers, network line cards, and base band units (BBU)).
- Servers and Storage: Applicable in servers and storage/SAN systems).
- Test and Measurement: Employed in test and measurement equipment).
- Medical Imaging: Used in medical imaging applications).
- FPGA and Processor Attach: Suitable for use with FPGAs and processors).
Q & A
- What is the maximum output frequency of the LMK61E2BAA-SIAT?
The maximum output frequency is 1000 MHz).
- What are the available output formats for this oscillator?
The outputs can be configured as LVPECL, LVDS, or HCSL).
- What is the typical jitter performance of the LMK61E2BAA-SIAT?
The typical jitter is 90 fs RMS for frequencies above 100 MHz).
- What is the operating temperature range of this device?
The operating temperature range is -40°C to 85°C).
- How is the device programmed?
The device is programmable through an I2C interface and has an integrated EEPROM for user-configurable default settings).
- What is the power supply voltage for the LMK61E2BAA-SIAT?
The device operates from a single 3.3-V ± 5% supply).
- What are some common applications for this oscillator?
Common applications include high-performance timing in networking equipment, servers, storage systems, test and measurement, medical imaging, and FPGA/processor attach).
- What is the package type and dimensions of the LMK61E2BAA-SIAT?
The device is housed in a 7x5mm, 8-pin QFM (SIA) package).
- Does the LMK61E2BAA-SIAT have any special features for supply noise immunity?
Yes, it has a high power supply rejection ratio (PSRR) of -70 dBc, providing robust supply noise immunity).
- What is the frequency tolerance of the LMK61E2BAA-SIAT?
The total frequency tolerance is ±50 ppm).
