Overview
The NB3N3002DTR2G, produced by onsemi, is a precision, low phase noise clock generator designed to support various high-speed interface standards such as PCI-Express and Ethernet. This device accepts a 25 MHz fundamental mode parallel resonant crystal and generates differential HCSL (High-Speed Current Steering Logic) outputs at frequencies of 25 MHz, 100 MHz, 125 MHz, or 200 MHz. It is housed in a 5.0 mm x 4.4 mm narrow body TSSOP 16-pin package, making it suitable for compact and high-performance applications.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 3.135 | 3.3 | 3.465 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Input Frequency (fCLKIN) | 25 | - | - | MHz |
| Output Frequency (fCLKOUT) | 25 | - | 200 | MHz |
| Phase Noise @ 100 MHz Offset | -109.4 | - | - | dBc/Hz |
| Phase Noise @ 1 kHz Offset | -127.8 | - | - | dBc/Hz |
| TIE RMS Jitter | - | 2.5 | - | ps |
| PCIe Gen 1 RMS Phase Jitter | 10 | 16 | 86 | ps (p-p) |
| Package Type | - | - | TSSOP-16 | - |
Key Features
- Uses 25 MHz fundamental mode parallel resonant crystal.
- No external loop filter required.
- HCSL differential output or LVDS with proper termination.
- Selectable multipliers of the input frequency.
- Output enable with tri-state outputs.
- Compliant with PCIe Gen1, Gen2, Gen3, Gen4, QPI, UPI jitter specifications.
- Low phase noise and jitter performance.
- Industrial temperature range: -40°C to +85°C.
- Pb-free device.
Applications
The NB3N3002DTR2G is designed for use in high-speed data communication systems, including:
- PCI-Express interfaces (Gen1, Gen2, Gen3, Gen4).
- Ethernet applications.
- QPI (QuickPath Interconnect) and UPI (Ultra Path Interconnect) interfaces.
- Other high-speed clocking requirements in server, storage, and networking equipment.
Q & A
- What is the primary function of the NB3N3002DTR2G?
The NB3N3002DTR2G is a precision clock generator that accepts a 25 MHz crystal input and generates differential HCSL outputs at various frequencies.
- What are the supported output frequencies?
The device supports output frequencies of 25 MHz, 100 MHz, 125 MHz, and 200 MHz.
- What is the package type of the NB3N3002DTR2G?
The device is housed in a 5.0 mm x 4.4 mm narrow body TSSOP 16-pin package.
- Is the NB3N3002DTR2G Pb-free?
- What are the operating temperature ranges for the NB3N3002DTR2G?
The device operates within an industrial temperature range of -40°C to +85°C.
- Does the NB3N3002DTR2G require an external loop filter?
No, the device does not require an external loop filter.
- What are the typical phase noise and jitter specifications of the NB3N3002DTR2G?
The device has a typical TIE RMS jitter of 2.5 ps and phase noise specifications as detailed in the datasheet.
- Is the NB3N3002DTR2G compliant with PCIe jitter specifications?
- How do you select the output frequency on the NB3N3002DTR2G?
The output frequency is selected using the SEL0 and SEL1 input pins.
- Can the NB3N3002DTR2G output be configured as LVDS?
