LMKDB1104
- LP-HCSL clock buffer and clock MUX that support:
- PCIe Gen 1 to Gen 7
- CC (Common Clock) and IR (Independent Reference) PCIe architectures
- Input clock with or without SSC
- Intel DB2000QL and DB1206 compliant:
- All devices meet DB2000QL specifications
- LMKDB1120 is pin-compatible to DB2000QL
- LMKDB1112 is pin-compatible to DB1206
- Extremely low additive jitter:
- 31fs maximum 12kHz to 20MHz RMS additive jitter at 156.25MHz
- 13fs maximum additive jitter for PCIe Gen 4
- 5fs maximum additive jitter for PCIe Gen 5
- 3fs maximum additive jitter for PCIe Gen 6
- 2.1fs maximum additive jitter for PCIe Gen 7
- Fail-safe input
- Fail-safe outputs (LMKDB1120FS, LMKDB1108FS and LMKDB1104FS only)
- Flexible power-up sequence
- Automatic output disable
- Individual output enable
- SBI (Side Band Interface) for high-speed output enable or disable
- LOS (Loss of Signal) input detection
- 85Ω or 100Ω output impedance
- 1.8V / 3.3V ± 10% power supply
- –40°C to 105°C ambient temperature
The LMKDB devices are a family of extremely-low-jitter LP-HCSL buffers that support PCIe Gen 1 to Gen 7 and are DB2000QL compliant. The devices provide flexible power-up sequence, fail-safe inputs, fail-safe outputs, individual output active and inactive pins, loss of input signal (LOS) detection and automatic output disable features, as well as excellent power supply noise rejection performance.
Both 1.8V and 3.3V supply voltages are supported. For LMKDB1120, 1.8V power supply saves 250mW power compared to 3.3V.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LMKDB11xx PCIe Gen 1 to Gen 7 Ultra Low Jitter LP-HCSL Clock Buffer Family 数据表 (Rev. H) | PDF | HTML | 2026-10-28 | ||
| 应用简报 | 利用 LMKDB11xx-FS 失效防护输出器件降低系统级 Flex I/O风险 | PDF | HTML | 英语版 | PDF | HTML | 2025-10-24 | |
| 用户指南 | RC19XXX、9QXL2001X 与 LMKDB1XXX、CDCDB2000 直 接替换指南. | PDF | HTML | 英语版 | PDF | HTML | 2024-7-2 | |
| 应用手册 | PCIe 应用的时钟 | PDF | HTML | 英语版 | PDF | HTML | 2023-11-29 | |
| 白皮书 | 时钟在数据中心中的重要性 | PDF | HTML | 英语版 | PDF | HTML | 2023-11-21 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
LMKDB1104EVM — LMKDB1104 评估模块
LMKDB1104 评估模块 (EVM) 旨在提供快速设置，用于评估支持 PCIe 第 1 代到第 6 代并且符合 DB2000QL 标准的 LMKDB1104 LP-HCSL 缓冲器。印刷电路板 (PCB) 包含多个跳线和一个 USB 连接，可通过所需的用户编程和设置来启用 LMKDB1104。该评估模块可灵活地对 LMKDB1104 器件进行合规性测试、系统原型设计和性能评估。
TICSPRO-SW — TICS Pro GUI and Live Programming Tool for Clocking Devices
德州仪器 (TI) 时钟和合成器 (TICS) 专业软件用于对具有以下前缀的产品编号的评估模块 (EVM) 进行编程：CDC、LMK 和 LMX。这些产品包括锁相环和电压控制振荡器 (PLL+VCO)、合成器和时钟器件。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (REX) | 28 | Ultra Librarian |
订购和质量
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