Overview
The DS125BR401SQE/NOPB is a high-performance, low-power, 4-lane repeater and redriver designed by Texas Instruments. This device is part of a comprehensive family of repeaters and redrivers, offering interoperability with various high-speed interface protocols. It supports four lanes of PCIe Gen-3/2/1, 10G-KR, and other serial protocols up to 12.5 Gbps. The DS125BR401 is engineered to compensate for signal degradation in lossy printed-circuit-board (PCB) backplanes and balanced cables, ensuring reliable and error-free data transmission over extended distances.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (2.5-V mode) | 2.375 | 2.5 | 2.625 | V |
| Supply Voltage (3.3-V mode) | 3.0 | 3.3 | 3.6 | V |
| Ambient Temperature | -40 | 25 | 85 | °C |
| Power Consumption per Channel | 65 | mW | ||
| ESD Rating | 5 kV | HBM | ||
| Package Type | WQFN (54 pins) | |||
| Package Dimensions | 10 mm × 5.5 mm | |||
| Receive Equalization | Up to 30 dB at 6.25 GHz | |||
| Transmit De-Emphasis | Up to 12 dB | |||
| Transmit Output Voltage Control | 700 mV | 1300 mV |
Key Features
- Comprehensive family with proven system interoperability, including DS125BR111, DS125BR401, DS125BR800, and more.
- Low power consumption: 65 mW/channel (typical) with the option to power down unused channels.
- Advanced signal conditioning features:
- Receive equalization up to 30 dB at 6.25 GHz.
- Transmit de-emphasis up to 12 dB.
- Transmit output voltage control: 700 mV to 1300 mV.
- Programmable through pin selection, EEPROM, or SMBus interface.
- Single supply voltage: 2.5 V or 3.3 V (selectable).
- Operating temperature range: -40°C to 85°C.
- 5-kV HBM ESD rating.
- Flow-thru pinout in a 10-mm × 5.5-mm 54-pin leadless WQFN package.
- Supported protocols include sRIO, Infiniband, Interlaken, CPRI, OBSAI, and other proprietary interfaces up to 12.5 Gbps.
Applications
- SAS/SATA (up to 6 Gbps), Fibre Channel (up to 10 GFC).
- PCIe Gen-3/2/1, 10G-KR, 10GbE, XAUI, RXAUI.
- sRIO, Infiniband, Interlaken, CPRI, OBSAI, and other high-speed serial protocols.
- High-speed data center and cloud infrastructure.
- Networking and telecommunications equipment.
- High-performance computing and storage systems.
Q & A
- What is the primary function of the DS125BR401?
The DS125BR401 is a high-performance, low-power, 4-lane repeater and redriver designed to support various high-speed interface protocols by compensating for signal degradation in lossy PCB backplanes and balanced cables.
- What are the supported protocols for the DS125BR401?
The DS125BR401 supports PCIe Gen-3/2/1, 10G-KR, sRIO, Infiniband, Interlaken, CPRI, OBSAI, and other proprietary interfaces up to 12.5 Gbps.
- What are the power consumption and supply voltage options for the DS125BR401?
The device has a typical power consumption of 65 mW/channel and can operate with a single supply voltage of either 2.5 V or 3.3 V.
- How does the DS125BR401 handle signal equalization and de-emphasis?
The DS125BR401 features receive equalization up to 30 dB at 6.25 GHz and transmit de-emphasis up to 12 dB, along with transmit output voltage control from 700 mV to 1300 mV.
- What is the operating temperature range of the DS125BR401?
The device operates within a temperature range of -40°C to 85°C.
- What is the package type and dimensions of the DS125BR401?
The DS125BR401 comes in a 54-pin leadless WQFN package with dimensions of 10 mm × 5.5 mm.
- How can the settings of the DS125BR401 be programmed?
The settings can be programmed through pin selection, EEPROM, or SMBus interface.
- What is the ESD rating of the DS125BR401?
The device has a 5-kV HBM ESD rating.
- Can the DS125BR401 be used in various high-speed applications?
Yes, it is suitable for high-speed data center, cloud infrastructure, networking, telecommunications, and high-performance computing applications.
- How does the DS125BR401 support link training protocols?
The device allows the host controller and endpoint to optimize the full link and negotiate transmit equalizer coefficients, extending the maximum channel loss with minimal latency.
