Overview
The LMK61A2-100M00SIAT is an ultra-low jitter oscillator produced by Texas Instruments. This device is part of the LMK61XX series, designed to generate high-performance reference clocks with exceptional jitter and noise characteristics. It is pre-programmed to support various output frequencies and formats, making it versatile for a wide range of applications. The LMK61A2-100M00SIAT operates from a single 3.3 V power supply and is packaged in a 6-pin QFM package, ensuring compatibility with industry-standard 7050 XO packages.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Frequency | 100 MHz | MHz |
| Output Format | LVDS | - |
| Total Frequency Tolerance | ±50 ppm | ppm |
| Jitter (RMS) | 90 fs (Typical for Fout > 100 MHz) | fs |
| PSRR | -70 dBc | dBc |
| Operating Voltage | 3.3 V ± 5% | V |
| Temperature Range | -40°C to +85°C | °C |
| Package Type | 6-Pin QFM (7.0 mm x 5.0 mm) | - |
Key Features
- Ultra-low jitter: 90 fs RMS typical for frequencies above 100 MHz.
- Robust supply noise immunity with a PSRR of -70 dBc.
- Supported output formats include LVPECL up to 1 GHz, LVDS up to 900 MHz, and HCSL up to 400 MHz.
- Internal power conditioning for excellent power supply ripple rejection.
- Single 3.3 V ± 5% power supply operation.
- Industrial temperature range: -40°C to +85°C.
- Pin-compatible with industry-standard 7050 XO packages.
Applications
- High-performance replacement for crystal, SAW, or silicon-based oscillators.
- Switches, routers, network line cards, base band units (BBU), servers, and storage/SAN systems.
- Test and measurement equipment.
- Medical imaging devices.
- FPGA and processor attach applications.
Q & A
- What is the typical jitter performance of the LMK61A2-100M00SIAT?
The typical jitter performance is 90 fs RMS for frequencies above 100 MHz.
- What output formats are supported by the LMK61A2-100M00SIAT?
The device supports LVPECL up to 1 GHz, LVDS up to 900 MHz, and HCSL up to 400 MHz.
- What is the operating voltage of the LMK61A2-100M00SIAT?
The device operates from a single 3.3 V ± 5% power supply.
- What is the temperature range of the LMK61A2-100M00SIAT?
The device operates within an industrial temperature range of -40°C to +85°C.
- What is the package type of the LMK61A2-100M00SIAT?
The device is packaged in a 6-Pin QFM package (7.0 mm x 5.0 mm).
- What is the total frequency tolerance of the LMK61A2-100M00SIAT?
The total frequency tolerance is ±50 ppm.
- How does the LMK61A2-100M00SIAT handle power supply noise?
The device has robust supply noise immunity with a PSRR of -70 dBc.
- What are some typical applications of the LMK61A2-100M00SIAT?
Typical applications include high-performance replacements for crystal or silicon-based oscillators, switches, routers, network line cards, and medical imaging devices.
- How should the power supply bypass capacitors be configured for the LMK61A2-100M00SIAT?
Texas Instruments recommends using a combination of 10 µF, 1 µF, and 0.1 µF capacitors in the power supply bypass network, with short connections to the ground plane.
- What are the thermal considerations for the LMK61A2-100M00SIAT?
The device requires careful attention to PCB layout to ensure thermal reliability, with the ground pin connected to the ground plane through multiple vias.
- How does the LMK61A2-100M00SIAT ensure signal integrity?
The device ensures signal integrity through recommended layout guidelines, including routing vias into decoupling capacitors and increasing via count and trace width.
