Overview
The LMK61E2-156M25SIAR is a high-performance, ultra-low jitter oscillator produced by Texas Instruments. This device is designed to generate a commonly used reference clock with precise frequency generation at 156.25 MHz. It operates within an industrial temperature range of -40°C to 85°C and is pre-programmed to support various output formats, including LVPECL up to 1 GHz, LVDS up to 900 MHz, and HCSL up to 400 MHz. The oscillator features internal power conditioning, providing excellent power supply ripple rejection (PSRR) and reducing the complexity of the power delivery network. It is packaged in a compact 6-pin QFM (SIA) package, compatible with industry standard 7050 XO packages.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency | 156.25 MHz |
| Frequency Tolerance | ±50 ppm |
| Jitter (RMS) | 90 fs (Typical for Fout > 100 MHz) |
| Output Formats | LVPECL up to 1 GHz, LVDS up to 900 MHz, HCSL up to 400 MHz |
| Supply Voltage | 3.3 V ± 5% |
| Current Consumption | 162 mA |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 6-Pin QFM (SIA) |
| Package Dimensions | 7 mm x 5 mm x 0.8 mm |
| PSRR | -70 dBc |
| RoHS Compliance | Yes |
Key Features
- Ultra-Low Jitter: 90 fs RMS typical for frequencies above 100 MHz.
- High Performance: Supports LVPECL up to 1 GHz, LVDS up to 900 MHz, and HCSL up to 400 MHz.
- Robust Supply Noise Immunity: PSRR of -70 dBc, reducing the complexity of the power delivery network.
- Industrial Temperature Range: Operates from -40°C to 85°C.
- Compact Packaging: 7 mm x 5 mm 6-pin QFM (SIA) package, pin-compatible with industry standard 7050 XO packages.
- Energy Efficiency: Low current consumption of 162 mA.
- Surface Mount Technology: Easy to implement in various circuit designs due to its surface mount compatibility.
Applications
The LMK61E2-156M25SIAR is suitable for a wide range of timing-sensitive digital applications, including:
- High-speed data transmission systems
- Telecommunication equipment
- Networking devices
- High-performance computing systems
- Industrial control systems
Q & A
- What is the operating frequency of the LMK61E2-156M25SIAR?
The operating frequency is 156.25 MHz.
- What are the supported output formats for this oscillator?
The supported output formats are LVPECL up to 1 GHz, LVDS up to 900 MHz, and HCSL up to 400 MHz.
- What is the typical jitter performance of this oscillator?
The typical jitter is 90 fs RMS for frequencies above 100 MHz.
- What is the operating temperature range of the LMK61E2-156M25SIAR?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage for this oscillator?
The supply voltage is 3.3 V ± 5%.
- Is the LMK61E2-156M25SIAR RoHS compliant?
- What is the package type and dimensions of the LMK61E2-156M25SIAR?
- What is the current consumption of the LMK61E2-156M25SIAR?
- What is the PSRR of the LMK61E2-156M25SIAR?
- Is the LMK61E2-156M25SIAR recommended for new designs?
