Overview
The NB3N5573DTG, produced by ON Semiconductor, is a high-precision, low-phase-noise clock generator designed to support PCI Express and Ethernet requirements. This device operates with a 25 MHz fundamental mode parallel resonant crystal and generates differential HCSL 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 package, making it suitable for a variety of high-speed applications where precise clocking is essential.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | 3.3 V ± 10% | V |
| Input Frequency (fCLKIN) | 25 MHz | MHz |
| Output Frequencies (fCLKOUT) | 25, 100, 125, 200 MHz | MHz |
| Output Type | Differential HCSL or LVDS with proper termination | |
| Phase Noise Performance at 200 MHz | -103 dBc/Hz @ 100 Hz offset, -118 dBc/Hz @ 1 kHz offset, -122 dBc/Hz @ 10 kHz offset, -130 dBc/Hz @ 100 kHz offset, -132 dBc/Hz @ 1 MHz offset, -132 dBc/Hz @ 10 MHz offset | dBc/Hz |
| Crystal Load Capacitance | 16-20 pF | pF |
| Temperature Range | -40°C to +85°C | °C |
| Package Type | TSSOP-16 |
Key Features
- Uses a 25 MHz fundamental mode parallel resonant crystal without the need for an external loop filter.
- Generates differential HCSL outputs or LVDS with proper termination.
- Four selectable multipliers of the input frequency (25 MHz, 100 MHz, 125 MHz, 200 MHz).
- Output enable with tri-state outputs.
- Supports PCI Express Gen1, Gen2, Gen3, and Gen4 requirements.
- Low phase noise performance.
- Internal pull-up resistors on frequency select inputs (S0 and S1).
- High impedance probes recommended for sensing input signal levels.
Applications
The NB3N5573DTG is designed for use in various high-speed applications, including:
- PCI Express systems (Gen1, Gen2, Gen3, Gen4).
- Ethernet systems.
- Data communication equipment.
- Networking devices.
- High-speed computing and storage systems.
Q & A
- What is the primary function of the NB3N5573DTG?
The NB3N5573DTG is a high-precision, low-phase-noise clock generator that generates differential HCSL outputs from a 25 MHz fundamental mode parallel resonant crystal.
- What are the output frequencies supported by the NB3N5573DTG?
The device supports output frequencies of 25 MHz, 100 MHz, 125 MHz, and 200 MHz.
- What type of output does the NB3N5573DTG provide?
The device provides differential HCSL outputs or LVDS with proper termination.
- How are the output frequencies selected?
The output frequencies are selected using LVTTL/LVCMOS level inputs SEL0 and SEL1.
- What is the recommended crystal load capacitance for the NB3N5573DTG?
The recommended crystal load capacitance is 16-20 pF.
- What is the operating temperature range of the NB3N5573DTG?
The operating temperature range is -40°C to +85°C.
- What package type is the NB3N5573DTG available in?
The device is housed in a TSSOP-16 package.
- Does the NB3N5573DTG require an external loop filter?
No, the device does not require an external loop filter.
- What are the typical applications of the NB3N5573DTG?
The device is typically used in PCI Express systems, Ethernet systems, data communication equipment, networking devices, and high-speed computing and storage systems.
- How is the phase noise performance of the NB3N5573DTG?
The phase noise performance at 200 MHz is -103 dBc/Hz @ 100 Hz offset, -118 dBc/Hz @ 1 kHz offset, -122 dBc/Hz @ 10 kHz offset, -130 dBc/Hz @ 100 kHz offset, -132 dBc/Hz @ 1 MHz offset, and -132 dBc/Hz @ 10 MHz offset.
