Overview
The AD8158ACPZ, produced by Analog Devices Inc., is a quad-lane 2:1 multiplexer/demultiplexer designed for high-speed serial data applications. This asynchronous, protocol-agnostic device supports NRZ signaling with data rates up to 6.5 Gbps per lane. It features a nonblocking switch core that implements 2:1 multiplexing and 1:2 demultiplexing per lane, with independent lane switching capability. The AD8158 is particularly useful for redundancy switching in both backplane and line interface sides of serial links, as well as for testing high-speed serial links due to its data duplication capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Data Rate | Up to 6.5 Gbps per lane |
| Input/Output Configuration | 12 differential CML inputs, 12 differential CML outputs |
| Supply Voltage | 1.8 V to 3.3 V (core), user-settable I/O supply from VCC to 1.2 V |
| Operating Temperature | −40°C to +85°C |
| Package Type | 100-lead LFCSP |
| Power Consumption | Typically 2.0 W in basic configuration |
| Input Equalization | Programmable, compensates up to 40 inches of FR4 |
| Output Pre-emphasis | Programmable up to 12 dB |
| Loss-of-Signal Detection | Supported |
| On-chip Termination | 50 Ω |
Key Features
- Quad 2:1 multiplexer and 1:2 demultiplexer per lane
- Programmable input equalization and output pre-emphasis
- Loss-of-signal detection and programmable output levels with squelch and disable
- Supports ac-coupled or dc-coupled differential CML inputs
- 50 Ω on-chip termination
- Unicast and bicast operation in demultiplexing path
- Port-level loopback and port or single lane switching
- Low power consumption, typically 2.0 W in basic configuration
- Control via external toggle pins or I2C interface
Applications
- Low-cost redundancy switch
- SONET OC48/SDH16 and lower data rates
- XAUI/GbE/FC/Infiniband over backplane
- OIF CEI 6.25 Gbps over backplane
- Serial data-level shift
- 4-/8-/12-lane equalizers or redrivers
- Testing high-speed serial links
- Port-monitoring applications
Q & A
- What is the maximum data rate supported by the AD8158?
The AD8158 supports data rates up to 6.5 Gbps per lane.
- What type of inputs and outputs does the AD8158 have?
The AD8158 has 12 differential CML inputs and 12 differential CML outputs.
- What is the operating temperature range of the AD8158?
The operating temperature range is −40°C to +85°C.
- How is the AD8158 typically powered?
The AD8158 operates with a core supply voltage of 1.8 V to 3.3 V and user-settable I/O supply from VCC to 1.2 V.
- What is the package type of the AD8158?
The AD8158 is packaged in a 100-lead LFCSP.
- Does the AD8158 support programmable input equalization?
Yes, the AD8158 supports programmable input equalization that compensates up to 40 inches of FR4.
- Can the AD8158 perform loss-of-signal detection?
Yes, the AD8158 supports loss-of-signal detection.
- How can the AD8158 be controlled?
The AD8158 can be controlled via external toggle pins or through the I2C interface.
- What are some common applications of the AD8158?
The AD8158 is commonly used for low-cost redundancy switching, SONET OC48/SDH16, XAUI/GbE/FC/Infiniband over backplane, and testing high-speed serial links.
- Does the AD8158 support unicast and bicast operations?
Yes, the AD8158 supports unicast and bicast operations in its demultiplexing path.
