Overview
The LMK1C1102DQFR from Texas Instruments is a high-performance, low-skew, general-purpose clock buffer part of the LMK1C110x family. This device is designed with a modular approach, offering 1:2, 1:3, or 1:4 fan-out configurations. It is pin-compatible with other family members and backwards compatible with the CDCLVC110x family, making it versatile for various applications. The LMK1C1102DQFR operates at supply voltages of 1.8 V, 2.5 V, or 3.3 V and is characterized for operation from –40°C to 125°C, ensuring wide temperature range compatibility.
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 | 0.35 ns to 0.8 ns (20/80%, CL= 5 pF) | ns |
| Operating Temperature Range | –40°C to 125°C | °C |
| Package | 8-pin TSSOP, 8-pin WSON |
Key Features
- High-performance 1:2, 1:3, or 1:4 LVCMOS clock buffer
- Very low output skew (< 50 ps) and extremely low additive jitter (typical values: 7.5 fs at 3.3 V, 10 fs at 2.5 V, 19.2 fs at 1.8 V)
- Very low propagation delay (< 3 ns)
- Synchronous output enable control
- 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 8-pin 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 LMK1C1102DQFR? The maximum clock frequency is 250 MHz at 3.3 V and 200 MHz at 2.5 V and 1.8 V.
- What are the available supply voltages for the LMK1C1102DQFR? The device operates at 1.8 V, 2.5 V, or 3.3 V.
- What is the output skew of the LMK1C1102DQFR? The output skew is less than 50 ps.
- What is the typical additive jitter of the LMK1C1102DQFR? The typical additive jitter is 7.5 fs at 3.3 V, 10 fs at 2.5 V, and 19.2 fs at 1.8 V.
- What is the propagation delay of the LMK1C1102DQFR? The propagation delay is less than 3 ns.
- Does the LMK1C1102DQFR have synchronous output enable control? Yes, it has synchronous output enable control.
- What are the available packages for the LMK1C1102DQFR? It is available in 8-pin TSSOP and 8-pin WSON packages.
- What is the operating temperature range of the LMK1C1102DQFR? The operating temperature range is –40°C to 125°C.
- Are the inputs of the LMK1C1102DQFR fail-safe? Yes, the inputs are fail-safe to prevent oscillation in the absence of an input signal.
- Can unused outputs be left floating? Yes, unused outputs can be left floating to reduce overall system component cost.
