CDCE937-Q1中文资料具有 2.5V 或 3.3V LVCMOS 输出的汽车类可编程 3-PLL VCXO 时钟合成器数据手册TI规格书

描述 Description

The CDCE937-Q1 and CDCEL937-Q1 devices are modular, phase-locked loop (PLL) based programmable clock synthesizers. These devices provide flexible and programmable options, such as output clocks, input signals, and control pins, so that the user can configure the CDCEx937-Q1 for their own specifications.
The CDCEx937-Q1 generates up to seven output clocks from a single input frequency to enable both board space and cost savings. Additionally, with multiple outputs, the clock generator can replace multiple crystals with one clock generator. This makes the device well-suited for head unit and telematics applications in infotainment and camera systems in ADAS as these platforms are evolving into smaller and more cost effective systems.
Furthermore, each output can be programmed in-system for any clock frequency up to 230 MHz through the integrated, configurable PLL. The PLL also supports spread-spectrum clocking (SSC) with programmable down and center spread. This provides better electromagnetic interference (EMI) performance to enable customers to pass industry standards such as CISPR-25.
Customization of frequency programming and SSC are accessed using three user-defined control pins. This eliminates the additional interface requirement to control the clock. Specific power-up and power-down sequences can also be defined to the userΩs needs.

特性 Features

• Qualified for Automotive Applications
• Device HBM ESD Classification Level 2
• In-System Programmability and EEPROM
• Nonvolatile EEPROM to Store Customer Setting
• On-Chip VCXO: Pull Range ±150 ppm
• Free Selectable Output Frequency up to 230  MHz
• Low Period Jitter (Typical 60 ps)
• CDCEL937-Q1: 1.8 V
• Generates Highly Accurate Clocks for Video, Audio, USB, IEEE1394, RFID, Bluetooth™, WLAN, Ethernet™, and GPS
• Programmable SSC Modulation
• 1.8-V Device Power Supply
• Packaged in TSSOP
• APPLICATIONS
• Head Units
• Advanced Driver Assistance Systems (ADAS)
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