Texas Instruments 德州仪器 LMK03328 超低抖动时钟发生器

德州仪器 LMK03328 超低抖动时钟发生器包括两个 N 分频率合成器，并集成了 VCO、灵活的时钟分布/扇出及存储于片上 EEPROM 的引脚选择配置状态。该器件可以生成多种时钟，用于不同数千兆位串行接口和数字设备。这样可以降低 BOM 成本和电路板面积，并通过取代多个振荡器和时钟分布设备来改善可靠性。超低的抖动降低了高速串行链路的误码率 (BER)。

特性

Ultra-low noise, high performance:
- Jitter: 100fs RMS typical, F_out > 100MHz
- PSRR: -70dBc, robust supply noise immunity
Flexible device options:
- Up to 8 AC-LVPECL, AC-LVDS, AC-CML, HCSL or LVCMOS outputs or any combination
- Pin mode, I²C mode, and EEPROM mode
- 71-pin selectable pre-programmed default startup options
Dual inputs with an automatic or manual selection:
- Crystal input: 10 to 52MHz range
- External input: 1 to 300MHz range

Frequency margining options:
- Fine frequency margining (±50ppm typical) using low-cost pullable crystal reference
- Glitchless coarse frequency margining (%) using output dividers
Other features:
- Supply: 3.3V core, 1.8/2.5/3.3V output supply
- Industrial temperature range (-40°C to 85°C)
- Package: 7mm x 7mm 48-QFN