CDCEL913-Q1 - 具有 1.8V LVCMOS 输出的汽车类可编程 1-PLL VCXO 时钟合成器

CDCEL913-Q1是TI德州仪器公司的一款扩频时钟产品，CDCEL913-Q1是具有 1.8V LVCMOS 输出的汽车类可编程 1-PLL VCXO 时钟合成器，本站介绍了CDCEL913-Q1的封装应用图解、特点和优点、功能等，并给出了与CDCEL913-Q1相关的TI元器件型号供参考。

CDCEL913-Q1 - 具有 1.8V LVCMOS 输出的汽车类可编程 1-PLL VCXO 时钟合成器 - 扩频时钟 - 时钟发生器 - 德州仪器

产品描述

The CDCE913-Q1 and CDCEL913-Q1 are modular PLL-based, low-cost, high-performance, programmable clock synthesizers, multipliers, and dividers. They generate up to three output clocks from a single input frequency. Each output can be programmed in-system for any clock frequency up to 230MHz, using the integrated configurable PLL.

The CDCx913 has separate output supply pins, VDDOUT, which is 1.8V for CDCEL913-Q1 and 2.5V to 3.3V for CDCE913-Q1.

The input accepts an external crystal or LVCMOS clock signal. If an external crystal is used, an on-chip load capacitor is adequate for most applications. The value of the load capacitor is programmable from 0 to 20pF. Additionally, a selectable on-chip VCXO allows synchronization of the output frequency to an external control signal, that is, the PWM signal.

The deep M/N divider ratio allows the generation of zero-ppm audio/video, networking (WLAN, , Ethernet, GPS) or interface (USB, IEEE1394, memory stick) clocks from, for example, a 27-MHz reference input frequency.

The PLL supports SSC (spread-spectrum clocking). SSC can be center-spread or down-spread clocking, which is a common technique to reduce electromagnetic interference (EMI).

Based on the PLL frequency and the divider settings, the internal loop filter components are automatically adjusted to achieve high stability and optimized jitter transfer characteristics.

The device supports non-volatile EEPROM programming for ease customization of the device to the application. It is preset to a factory default configuration (see the section). It can be re-programmed to a different application configuration before PCB assembly, or re-programmed by in-system programming. All device settings are programmable through the SDA/SCL bus, a 2-wire serial interface.

Three programmable control inputs, S0, S1, and S2, can be used to select different frequencies, change SSC setting for lowering EMI, or control other features like outputs disable to low, outputs 3-state, power down, PLL bypass, etc).

The CDCx913 operates in a 1.8-V environment. It operates in a temperature range of –40°C to 125°C.

产品特性

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C6
Member of Programmable Clock Generator Family
- CDCE913, CDCEL913: 1 PLL, 3 Outputs
- CDCE925, CDCEL925: 2-PLL, 5 Outputs
- CDCE937, CDCEL937: 3-PLL, 7 Outputs
- CDCE949, CDCEL949: 4-PLL, 9 Outputs
In-System Programmability and EEPROM
- Serial Programmable Volatile Register
- Nonvolatile EEPROM to Store Customer Settings
Flexible Input Clocking Concept
- External Crystal: 8 MHz to 32 MHz
- On-Chip VCXO: Pull Range ±150 ppm
- Single-Ended LVCMOS up to 160 MHz
Free Selectable Output Frequency up to 230 MHz
Low-Noise PLL Core
- PLL Loop Filter Components Integrated
- Low Period Jitter (Typical 50 ps)
Separate Output Supply Pins
- CDCE913-Q1: 3.3 V and 2.5 V
- CDCEL913-Q1: 1.8 V
Flexible Clock Driver
- Three User-Definable Control Inputs [S0/S1/S2], for Example., SSC Selection, Frequency Switching, Output Enable, or Power Down
- Generates Highly Accurate Clocks for Video, Audio, USB, IEEE1394, RFID, , WLAN, Ethernet, and GPS
- Generates Common Clock Frequencies Used With TI-DaVinci, OMAP, DSPs
- Programmable SSC Modulation
- Enables 0-PPM Clock Generation
1.8-V Device Power Supply
Wide Temperature Range –40°C to 125°C
Packaged in TSSOP
Development and Programming Kit for Easy PLL Design and Programming (TI Pro-Clock)

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