Overview
The MC100EP195, produced by onsemi, is a 3.3V ECL Programmable Delay Chip (PDC) designed primarily for clock deskewing and timing adjustment. This device provides a variable delay of a differential NECL/PECL input transition, making it highly versatile in various timing adjustment applications. The delay section consists of a programmable matrix of gates and multiplexers, allowing for precise control over the delay values.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Input Clock Frequency | >1.2 GHz | GHz |
| Programmable Range | 0 ns to 10 ns | ns |
| Delay Range | 2.2 ns to 12.2 ns | ns |
| Delay Increment | 10 ps | ps |
| PECL Mode Operating Range | VCC = 3.0 V to 3.6 V, VEE = 0 V | V |
| NECL Mode Operating Range | VCC = 0 V, VEE = −3.0 V to −3.6 V | V |
| Input Signal Types | ECL, LVCMOS, LVTTL | |
| VBB Output Reference Voltage | Internally generated | |
| Package Type | LQFP-32, QFN-32 |
Key Features
- Digitally selectable delay resolution of about 10 ps and a net range of up to 10.2 ns.
- Controlled by 10 data select inputs D[9:0] and the LEN pin for real-time or locked delay values.
- Cascade logic allows for the control of multiple PDCs to increase the programmable range.
- Supports ECL, LVCMOS, and LVTTL input modes with appropriate voltage configurations.
- Internally generated VBB reference voltage for single-ended input conditions and AC coupled inputs.
- Safety clamp on inputs and open input default state.
- Pb-free packages available.
Applications
The MC100EP195 is suitable for various applications requiring precise timing adjustment and clock deskewing, such as:
- High-speed data transmission systems.
- Telecommunication equipment.
- Networking devices.
- High-frequency signal processing.
- Timing synchronization in distributed systems.
Q & A
- What is the primary function of the MC100EP195?
The MC100EP195 is designed primarily for clock deskewing and timing adjustment, providing a variable delay of a differential NECL/PECL input transition.
- What is the programmable delay range of the MC100EP195?
The programmable delay range is from 0 ns to 10 ns with a minimum fixed delay of 2.2 ns.
- How is the delay controlled in the MC100EP195?
The delay is controlled by 10 data select inputs D[9:0] and the LEN pin, which can be set to either a transparent LOAD mode or a LOCK and HOLD mode.
- What input signal types does the MC100EP195 support?
The device supports ECL, LVCMOS, and LVTTL input modes with appropriate voltage configurations.
- What is the purpose of the VBB pin in the MC100EP195?
The VBB pin provides an internally generated reference voltage for single-ended input conditions and AC coupled inputs.
- Can the MC100EP195 be cascaded with other devices?
- What are the operating voltage ranges for PECL and NECL modes?
For PECL mode, VCC = 3.0 V to 3.6 V with VEE = 0 V. For NECL mode, VCC = 0 V with VEE = −3.0 V to −3.6 V.
- What is the maximum input clock frequency of the MC100EP195?
The maximum input clock frequency is greater than 1.2 GHz.
- What types of packages are available for the MC100EP195?
The device is available in LQFP-32 and QFN-32 packages.
- Is the MC100EP195 Pb-free?
