时钟与计时

时钟与计时 – 应用

TI 的解决方案包括适用于各种应用(包括有线和光通信、无线通信、工业和汽车)的多种产品:时钟缓冲器、时钟发生器、时钟抖动清除器以及射频 PLL 和合成器。

有线通信/网络

低抖动时钟通过确保高数据速率下出色的信号完整性来提高系统性能 

随着网络和有线通信应用中数据速率的不断提高,时钟抖动已成为维持信号完整性的主要瓶颈。TI 的超低抖动时钟抖动清除器和时钟发生器整合了多个振荡器,可以在简化物料清单 (BOM) 的同时提高系统性能。TI 的时钟和计时 IC 拥有灵活的架构和高级功能(如保持),可提高系统性能、灵活性和稳健性。

时钟网络应用图
适用于有线和光通信/存储/网络应用的特色器件
器件 说明

Clock Oscillators - Industry's lowest jitter

LMK61E2 Ultra-Low Jitter Fully Programmable Oscillator, Integrated EEPROM, +/-50ppm
LMK62E2 High-Performance Low Jitter Standard Oscillator - 156M25

Clock Buffers – Ultra-low additive jitter

CDCLVC1310 LVCMOS buffer
LMK00301 Configurable, differential buffer/level translator
LMK00334 4-output, PCIe 3.0-compliant HSCL fanout buffer
LMK00338 8-output, PCIe 3.0-compliant HSCL fanout buffer

Clock Generators – Replace crystals and oscillators

LMK03328 Ultra-Low Jitter Clock Generator Family With Two Independent PLLs
CDCM6208 2-input/8-output clock generator with integer and fractional dividers
LMK03806 1-input/14-output clock generator integer dividers

Clock Jitter Cleaners – Best performance for lowest BOM cost

LMK04906 2-PLL, 3-input/7-output, frequency holdover mode, programming delay
LMK04816 2-PLL, 3-input/13-output, frequency holdover mode, programming delay

无线通信

低噪声时钟和合成器可以更大限度提升数据转换器和总体信号链的性能

时钟抖动和本机振荡器 (LO) 相位噪声是无线电信号路径中的关键要素,可直接影响接收和传输的射频信号的质量。同样,在基带电路板中,时钟可影响与无线电之间的高速链路的信号完整性。凭借业内领先的性能,TI 的时钟抖动清除器、时钟发生器、时钟缓冲器以及射频 PLL 和合成器能够最大限度提升无线链路的质量和稳健性。

时钟无线应用图
适用于无线通信应用的特色器件
器件 说明

Clock Oscillators - Industry's lowest jitter

LMK61E2 Ultra-Low Jitter Fully Programmable Oscillator, Integrated EEPROM, +/-50ppm
LMK62E2 High-Performance Low Jitter Standard Oscillator - 156M25

Clock Buffers – Lowest jitter for excellent SNR and reduced bit error rate

CDCLVC1310 LVCMOS buffer
LMK00301 Configurable, differential buffer/level translator

Clock Generators – Replace crystals and oscillators

LMK03328 Ultra-Low Jitter Clock Generator Family With Two Independent PLLs
CDCM6208 2-input/8-output clock generator with integer and fractional dividers
CDCE62005 3-input/5-output clock generator with integrated dual VCOs
CDCI6214 PCIe Gen4 Compliant Ultra-Low Power Clock Generator With Four Programmable Outputs and EEPROM

Clock Jitter Cleaners – Best performance for lowest BOM cost

LMK04610 Ultra Low-Noise and Low Power JESD204B Compliant Clock Jitter Cleaner With Dual PLLs
LMK04616 Ultra Low-Noise and Low Power JESD204B Compliant Clock Jitter Cleaner
LMK04803 2-PLL, 2-input/14-output, integrated 1.9 GHz VCO, frequency holdover mode, programming delay
LMK04805 2-PLL, 2-input/14-output, integrated 2.2 GHz VCO, frequency holdover mode, programming delay
LMK04806 2-PLL, 2-input/14-output, integrated 2.5 GHz VCO, frequency holdover mode, programming delay
LMK04808 2-PLL, 2-input/14-output, integrated 2.9 GHz VCO, frequency holdover mode, programming delay
LMK04826 2.5 GHz, 2-PLL, JESD204B-compliant, frequency holdover mode, programming delay
LMK04828 GHz, 2-PLL, JESD204B-compliant, frequency holdover mode, programming delay

RF PLLs/Synthesizers – Extend the range of your wireless links

LMX2581 Wideband fractional-N synthesizer, integrated wideband VCOs
LMX2571 Low Power Synthesizer with FSK Modulation
LMX2492 14 GHz fractional-N PLL with ramp/chirp generation
LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
LMX2531 High Performance Frequency Synthesizer System with Integrated VCO
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工业

灵活的时钟可整合多个晶体和振荡器,以降低 BOM 并增强可靠性

TI 的时钟和计时 IC 可使用一个简单的低功耗时钟解决方案,通过整合多个晶体和振荡器,帮助提高系统的可靠性。在性能至关重要的工业应用(如测试 & 测量)中,设计人员可以凭借 TI 的低抖动时钟和射频 PLL 以及合成器突破极限,提供与众不同的解决方案。

时钟工业应用图
适用于工业应用的特色器件
器件 说明

Clock Oscillators

LMK61E2 Ultra-Low Jitter Fully Programmable Oscillator, Integrated EEPROM, +/-50ppm
LMK62E2 High-Performance Low Jitter Standard Oscillator - 156M25

Clock Buffers

CDCLVC1310 LVCMOS buffer
LMK00301 Configurable, differential buffer/level translator

Clock Generators

CDCI6214 PCIe Gen4 Compliant Ultra-Low Power Clock Generator With Four Programmable Outputs and EEPROM
LMK03328 Ultra-Low Jitter Clock Generator Family With Two Independent PLLs
CDCE949 4-PLL, integrated VCXO, spread spectrum clocking, 1.8/2.5/3.3V outputs
CDCM6208 2-input/8-output clock generator with integer and fractional dividers
LMK03806 1-input/14-output clock generator with integer dividers

Clock Jitter Cleaners

LMK04610 Ultra Low-Noise and Low Power JESD204B Compliant Clock Jitter Cleaner With Dual PLLs
LMK04616 Ultra Low-Noise and Low Power JESD204B Compliant Clock Jitter Cleaner
LMK04828 3 GHz, 2-PLL, JESD204B-compliant, frequency holdover mode, programming delay
LMK04906 2-PLL, 3-input/7-output, frequency holdover mode, programming delay

RF PLLs/Synthesizers

LMX2571 Low Power Synthesizer with FSK Modulation
LMX2531 High Performance Frequency Synthesizer System with Integrated VCO
LMX2581 Wideband fractional-N synthesizer, integrated wideband VCOs
LMX2492 14 GHz fractional-N PLL with ramp/chirp generation
LMX2485E Delta-Sigma Low Power Dual PLL for RF Personal Communications
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汽车

时钟和射频 PLL 可以简化时钟树,并提高汽车雷达的覆盖范围和精度

凭借一系列汽车级时钟和射频 PLL,TI 为信息娱乐和高级驾驶辅助系统 (ADAS) 提供解决方案。在 ADAS 应用中,TI 的高性能 PLL 可以显著增大雷达系统的范围并提高其准确度,同时通过集成斜坡生成等关键功能来简化设计。在信息娱乐应用中,TI 的时钟发生器和缓冲器有助于通过简单的低功耗时钟解决方案整合多个晶体和振荡器。

时钟汽车应用图
适用于汽车应用的特色器件
器件 说明

Clock Generators

CDCE813-Q1 Programmable 1-PLL Clock Synthesizer and Jitter Cleaner With 2.5-V and 3.3-V Outputs
CDCE949-Q1 4-PLL, integrated VCXO, spread spectrum clocking, 1.8/2.5/3.3V outputs
CDCE937-Q1 3-PLL, integrated VCXO, spread spectrum clocking, 1.8/2.5/3.3V outputs
CDCM6208 2-input/8-output clock generator with integer and fractional dividers

RF PLLs/Synthesizers

LMX2492-Q1 14 GHz fractional-N PLL with ramp/chirp generation
LMX2485Q-Q1 Wideband, dual fractional-N PLL

Nanotimers

TPL5010-Q1 AEC-Q100 Nano-Power System Timer with Watchdog Function