Overview
The DS110DF111SQE/NOPB, produced by Texas Instruments, is a low-power, multirate, 2-channel retimer designed to enhance the reach and robustness of high-speed serial links. This device features integrated signal conditioning, including a Continuous-Time Linear Equalizer (CTLE), clock and data recovery (CDR), and transmit drivers on each channel. It is particularly useful in applications where lossy transmission media are present, such as in high-speed data transmission over long distances or through dispersive channels.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | -0.5 | 2.75 | V | |
| Input Baud Rate | 8.5 | 11.3 | Gbps | |
| Power Supply Current (11.3 Gbps) | 150 | 170 | mA | |
| Maximum Transient Supply Current | 235 | 300 | mA | |
| Ambient Temperature | -40 | 25 | 85 | °C |
| Package Type | WQFN (RTW) 24 pins | |||
| Package Size | 4.0 mm × 4.0 mm |
Key Features
- Integrated Signal Conditioning: Includes CTLE, CDR, and transmit drivers on each channel.
- Adaptive CTLE and DFE: Up to 34 dB boost at 5.65 GHz and a 5-tap DFE to compensate for channel impairments.
- Settable Transmit VOD and De-Emphasis: Adjustable differential output voltage (600 to 1300 mVp-p) and de-emphasis (0 to -12 dB).
- Low Power Consumption: Approximately 200 mW per channel.
- PRBS Pattern Generation: Supports PRBS-9, PRBS-31 sequences.
- Eye Opening Monitor and Loopback: Features for monitoring and testing signal quality.
- Multirate Capability: Locks to half, quarter, and eighth data rates.
Applications
- High-Speed Data Transmission: Ideal for applications requiring high-speed data transmission over long distances or through dispersive channels.
- 10G/1G Ethernet: Suitable for Ethernet applications requiring signal conditioning.
- CPRI (Common Public Radio Interface): Used in CPRI systems to enhance signal integrity.
- Data Centers and Cloud Infrastructure: Helps in maintaining signal quality in high-speed data links within data centers.
Q & A
- What is the primary function of the DS110DF111?
The primary function of the DS110DF111 is to act as a low-power, multirate, 2-channel retimer, enhancing the reach and robustness of high-speed serial links by compensating for channel impairments.
- What are the key components of the DS110DF111's signal conditioning?
The key components include a Continuous-Time Linear Equalizer (CTLE), clock and data recovery (CDR), and transmit drivers on each channel.
- What is the operating baud rate range of the DS110DF111?
The operating baud rate range is from 8.5 to 11.3 Gbps.
- How does the DS110DF111 manage power consumption?
The DS110DF111 has a low power consumption of approximately 200 mW per channel.
- What types of PRBS sequences does the DS110DF111 support?
The DS110DF111 supports PRBS-9 and PRBS-31 sequences.
- What is the purpose of the CTLE and DFE in the DS110DF111?
The CTLE and DFE are used to compensate for channel impairments, with the CTLE boosting high-frequency components and the DFE discriminating against input noise and jitter.
- What is the package type and size of the DS110DF111?
The DS110DF111 comes in a WQFN (RTW) package with 24 pins and measures 4.0 mm × 4.0 mm.
- What are some common applications of the DS110DF111?
Common applications include high-speed data transmission, 10G/1G Ethernet, CPRI systems, and data centers.
- How does the DS110DF111 handle clock and data recovery?
The DS110DF111 performs clock and data recovery by detecting bit transitions in the incoming data stream and locking its internal VCO to the clock represented by the mean arrival times of these bit transitions.
- What is the significance of the output de-emphasis in the DS110DF111?
The output de-emphasis compensates for dispersion in the transmission channel at the output, accentuating high-frequency components to reduce inter-symbol interference.
