Overview
The LMK1C1103PWR is a high-performance, low-skew LVCMOS clock buffer from Texas Instruments. It is part of the LMK1C110x family, which is designed for modular and general-purpose clock buffering. This device offers a 1:3 fan-out configuration, making it suitable for various applications requiring precise clock signal distribution.
The LMK1C1103PWR operates at supply voltages of 1.8 V, 2.5 V, and 3.3 V, and it is characterized for operation over a wide temperature range from –40°C to 125°C. It features synchronous output enable, fail-safe inputs, and low additive jitter, making it an ideal choice for systems requiring high signal integrity.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 1.8 V, 2.5 V, 3.3 V | V |
| Maximum Clock Frequency | 250 MHz (at 3.3 V), 200 MHz (at 2.5 V and 1.8 V) | MHz |
| Output Skew | < 50 ps | ps |
| Additive Jitter | 7.5 fs (typical at 3.3 V), 10 fs (typical at 2.5 V), 19.2 fs (typical at 1.8 V) | fs |
| Propagation Delay | < 3 ns | ns |
| Output Rise and Fall Time | 0.33 ns to 0.8 ns (20/80%, CL= 5 pF) | ns |
| Package Type | 8-pin TSSOP | |
| Operating Temperature Range | –40°C to 125°C | °C |
Key Features
- High-performance 1:3 LVCMOS clock buffer
- Very low output skew (< 50 ps)
- Extremely low additive jitter (< 50 fs maximum)
- Very low propagation delay (< 3 ns)
- Synchronous output enable
- Fail-safe inputs to prevent oscillation in the absence of an input signal
- 3.3-V tolerant input at all supply voltages
- Available in 8-pin TSSOP and WSON packages
Applications
- Factory automation and control
- Telecommunications equipment
- Data center and enterprise computing
- Grid infrastructure
- Motor drives
- Medical imaging
Q & A
- What is the maximum clock frequency of the LMK1C1103PWR at 3.3 V supply voltage?
The maximum clock frequency at 3.3 V supply voltage is 250 MHz.
- What is the typical additive jitter of the LMK1C1103PWR at 3.3 V supply voltage?
The typical additive jitter at 3.3 V supply voltage is 7.5 fs.
- What is the output skew of the LMK1C1103PWR?
The output skew is less than 50 ps.
- What are the available package types for the LMK1C1103PWR?
The device is available in 8-pin TSSOP and WSON packages.
- What is the operating temperature range of the LMK1C1103PWR?
The operating temperature range is from –40°C to 125°C.
- Does the LMK1C1103PWR support synchronous output enable?
- What is the purpose of the fail-safe inputs in the LMK1C1103PWR?
The fail-safe inputs prevent oscillation at the outputs in the absence of an input signal and allow for input signals before VDD is supplied.
- Can unused outputs be left floating in the LMK1C1103PWR?
- What are some typical applications of the LMK1C1103PWR?
Typical applications include factory automation, telecommunications equipment, data center and enterprise computing, grid infrastructure, motor drives, and medical imaging.
- How does the LMK1C1103PWR ensure high signal integrity?
The device ensures high signal integrity through its low additive jitter, low output skew, and the ability to match the characteristic impedance of the output driver with that of the transmission line.
