Overview
The DS25BR100TSD/NOPB, produced by Texas Instruments, is a high-speed 3.125 Gbps LVDS (Low Voltage Differential Signaling) buffer designed to optimize signal transmission over lossy media such as FR-4 printed circuit boards and balanced metallic cables. This device features both transmit pre-emphasis and receive equalization, making it ideal for use as a repeater in high-speed data transmission applications. The DS25BR100 is part of a family of LVDS buffers that include various configurations for different signal conditioning needs.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Operating Data Rate | DC | - | 3.125 | Gbps |
| Supply Voltage (VCC) | -0.3 | - | 4 | V |
| LVCMOS Input Voltage (EQ, PE) | -0.3 | - | VCC + 0.3 | V |
| LVDS Input Voltage (IN+, IN-) | -0.3 | - | 4 | V |
| LVDS Differential Input Voltage (VID) | 1 | - | - | V (DS25BR100), VCC + 0.6 (DS25BR101) |
| LVDS Output Voltage (OUT+, OUT-) | -0.3 | - | VCC + 0.3 | V |
| LVDS Differential Output Voltage | 0 | - | 1 | V |
| Differential Propagation Delay High to Low | 350 | 465 | - | ps |
| Differential Propagation Delay Low to High | 350 | 465 | - | ps |
| Pulse Skew | 45 | 100 | - | ps |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | WSON-8 | - |
Key Features
- Transmit Pre-Emphasis and Receive Equalization: The DS25BR100TSD/NOPB features two levels of transmit pre-emphasis and two levels of receive equalization to compensate for signal degradation over long distances and lossy media.
- Internal Termination: The DS25BR100 has internal 100Ω input termination, while the DS25BR101 requires external termination, providing design flexibility.
- Low Power Operation: Optimized for low power consumption, making it suitable for power-sensitive applications.
- High Noise Immunity: Differential signal paths ensure exceptional signal integrity and noise immunity.
- Small Package Footprint: The device comes in a small 3 mm x 3 mm WSON-8 package, requiring minimal board space.
- Wide Input Common Mode Range: Allows the receiver to accept signals from various differential drivers such as LVDS, CML, and LVPECL.
- ESD Protection: 7 kV ESD protection on LVDS I/O pins to protect adjoining components.
Applications
- Clock and Data Buffering: Ideal for buffering high-speed clock and data signals in various digital systems.
- Metallic Cable Driving and Equalization: Suitable for driving and equalizing signals over metallic cables.
- FR-4 Equalization: Optimized for signal transmission over FR-4 printed circuit boards.
- High-Speed Data Transmission: Used in applications requiring high-speed data transmission such as in telecommunications, data centers, and high-performance computing.
Q & A
- What is the maximum data rate supported by the DS25BR100TSD/NOPB?
The DS25BR100TSD/NOPB supports a maximum data rate of 3.125 Gbps. - What are the key signal conditioning features of this device?
The device features transmit pre-emphasis and receive equalization to enhance signal integrity over lossy media. - Does the DS25BR100TSD/NOPB have internal input termination?
The DS25BR100 has internal 100Ω input termination, while the DS25BR101 requires external termination. - What is the operating temperature range of the DS25BR100TSD/NOPB?
The operating temperature range is from -40°C to 85°C. - What types of differential drivers can the DS25BR100TSD/NOPB accept?
The device can accept signals from LVDS, CML, and LVPECL differential drivers. - What is the package type of the DS25BR100TSD/NOPB?
The device comes in a WSON-8 package. - Does the DS25BR100TSD/NOPB have ESD protection?
Yes, it has 7 kV ESD protection on LVDS I/O pins. - What are some typical applications of the DS25BR100TSD/NOPB?
Typical applications include clock and data buffering, metallic cable driving, FR-4 equalization, and high-speed data transmission in telecommunications and data centers. - How does the device minimize component count and board space?
The internal termination and small package footprint help minimize component count and board space. - What is the significance of the flow-through pinout in the DS25BR100TSD/NOPB?
The flow-through pinout allows for easy board layout and minimizes the complexity of board design.
