Overview
The MC100EP195BMNR4G is a Programmable Delay Chip (PDC) designed by onsemi, primarily for clock deskewing and timing adjustment. This chip provides variable delay of a differential NECL/PECL input transition, making it ideal for high-speed applications requiring precise timing control. The delay section consists of a programmable matrix of gates and multiplexers, allowing for a digitally selectable resolution of about 10 ps and a net range of up to 10.2 ns.
Key Specifications
| Parameter | Specification |
|---|---|
| Maximum Input Clock Frequency | >1.2 GHz Typical |
| Programmable Range | 0 ns to 10 ns |
| Delay Range | 2.2 ns to 12.2 ns |
| Delay Increments | 10 ps |
| PECL Mode Operating Range | VCC = 3.0 V to 3.6 V with VEE = 0 V |
| NECL Mode Operating Range | VCC = 0 V with VEE = 3.0 V to 3.6 V |
| Input Levels | Accept LVPECL, LVNECL, LVDS Levels |
| Data Select Inputs | D(9:0) |
| Cascade Control | D10 Pin for cascading multiple PDCs |
| VBB Output Reference Voltage | Internally generated voltage supply |
Key Features
- High-Speed Operation: Operates at speeds up to 3.2 Gbps, making it suitable for demanding communication and networking applications.
- Low Input/Output Skew: Differential inputs ensure minimal skew, ideal for high-performance systems.
- Programmable Delay: Variable delay with a resolution of 10 ps and a range of up to 10.2 ns.
- Cascade Capability: Allows cascading of multiple PDCs to increase the programmable range without external gating.
- Multi-Channel Deskewing: Effective in matching delays across multiple signal channels to eliminate timing skews.
- Flexible Input Levels: Accepts LVPECL, LVNECL, LVDS, LVCMOS, and LVTTL input levels.
- Temperature Compensation: Ensures stable operation across various temperatures.
Applications
- Automated Test Equipment (ATE): Ideal for precise timing adjustments in test equipment.
- High-Speed Communication Systems: Suitable for applications requiring high-speed data switching and timing control.
- Networking Systems: Used in networking applications to ensure synchronized and precise data transmission.
- Multi-Channel Systems: Effective in deskewing multiple signal channels to reduce timing skews.
- Advanced Signal Processing: Used in various high-speed data processing and measurement applications.
Q & A
- What is the primary function of the MC100EP195BMNR4G?
The MC100EP195BMNR4G is primarily designed for clock deskewing and timing adjustment, providing variable delay of a differential NECL/PECL input transition.
- What is the maximum input clock frequency of the MC100EP195BMNR4G?
The maximum input clock frequency is greater than 1.2 GHz typical.
- What is the programmable delay range of the MC100EP195BMNR4G?
The programmable delay range is from 0 ns to 10 ns, with a minimum delay of 2.2 ns and a maximum delay of 12.2 ns.
- What are the supported input levels for the MC100EP195BMNR4G?
The chip accepts LVPECL, LVNECL, LVDS, LVCMOS, and LVTTL input levels.
- How does the cascade feature work in the MC100EP195BMNR4G?
The cascade feature allows multiple PDCs to be cascaded without external gating, increasing the programmable range. This is controlled by the D10 pin and the CASCADE outputs.
- What is the purpose of the VBB output reference voltage?
The VBB output is an internally generated voltage supply that can be used as a switching reference voltage for single-ended input conditions or to rebias AC coupled inputs.
- In what types of applications is the MC100EP195BMNR4G commonly used?
It is commonly used in automated test equipment, high-speed communication systems, networking systems, multi-channel systems, and advanced signal processing applications.
- How does the MC100EP195BMNR4G handle temperature variations?
The device includes temperature compensation to ensure stable operation across various temperatures.
- Can the MC100EP195BMNR4G be used for multi-channel deskewing?
Yes, it is effective in matching delays across multiple signal channels to eliminate timing skews.
- What is the significance of the LEN pin in the MC100EP195BMNR4G?
The LEN pin controls the load mode and lock mode of the delay values. A LOW level on LEN allows a transparent LOAD mode, while a LOW to HIGH transition on LEN will LOCK and HOLD the current values.
