Overview
The NB3W800LMNGEVB is an evaluation board designed by onsemi for the NB3W800L, a low-power 8-output differential buffer. This board is intended to provide a flexible and convenient platform for quickly evaluating, characterizing, and verifying the operation of the NB3W800L device. It is particularly useful for meeting the performance requirements of the DB800ZL specification.
Key Specifications
| Parameter | Description |
|---|---|
| Device Type | Low-power 8-output differential buffer |
| Package Type | QFN-48 |
| Power Supply | 3.3V (VDD & VDDIO) |
| Differential Inputs/Outputs | Accessed via SMA connectors or high impedance probes |
| Frequency Selection | 100 MHz or 133 MHz (selectable via jumper or external signal) |
| Control Pins | Tri-level input pins, OE# pins for output enable/disable, PWRGD/PWRDN pin |
| I2C/SMBus Interface | On-board interface circuitry powered via USB connection |
| Layer Stack | Four-layer board with FR4 dielectric material |
| Impedance | 85-Ω differential trace impedance, 43-Ω controlled impedance environment |
Key Features
- Accommodates electrical characterization of the NB3W800L with low power NMOS push-pull outputs.
- Custom QFN-48 pogo-pin socket for lab evaluation or soldered down QFN-48 package.
- On-board I2C/SMBus interface circuitry powered from a USB connection.
- Convenient and compact board layout with 3.3V power supply device operation.
- Differential inputs and output signals accessed via SMA connectors or high impedance probes.
- Control pins managed through SMA connectors or manually with H/L jumper headers.
- Optional component installation for additional capacitance loading.
- High bandwidth, 43-Ω controlled impedance environment.
- No vias on differential I/O metal traces to eliminate via impedance and stub effects.
Applications
The NB3W800LMNGEVB evaluation board is designed for evaluating and characterizing the NB3W800L low-power differential buffer in various high-speed digital applications. These include but are not limited to:
- High-speed data transmission systems.
- Digital signal processing and communication systems.
- Test and measurement equipment.
- Industrial control and automation systems.
Q & A
- What is the primary purpose of the NB3W800LMNGEVB evaluation board?
The primary purpose is to evaluate, characterize, and verify the operation of the NB3W800L low-power differential buffer.
- What is the package type of the NB3W800L device?
The package type is QFN-48.
- What are the power supply requirements for the board?
The board operates at 3.3V (VDD & VDDIO).
- How are the differential inputs and outputs accessed on the board?
They are accessed via SMA connectors or high impedance probes.
- What frequencies can be selected for the NB3W800L device on this board?
The frequencies can be set to 100 MHz or 133 MHz using jumpers or external signals.
- What type of interface does the board have for controlling the device?
The board has an on-board I2C/SMBus interface circuitry powered via a USB connection.
- How are the control pins managed on the board?
Control pins can be managed through SMA connectors or manually with H/L jumper headers.
- What is the impedance of the differential traces on the board?
The differential trace impedance is 85-Ω, with a 43-Ω controlled impedance environment.
- Can additional capacitance loading be added to the board?
- Why are there no vias on the differential I/O metal traces?
To eliminate via impedance and stub effects on high-speed signals.
