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參數(shù)資料
| 型號： | CDCE913_1 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Programmable 1-PLL VCXO Clock Synthesizer With 1.8-V, 2.5-V, and 3.3-V Outputs |
| 中文描述： | 可編程1 - PLL頻率石英振蕩器時鐘合成器的1.8 V，2.5 V和3.3 V輸出 |
| 文件頁數(shù)： | 2/23頁 |
| 文件大?。?/td> | 428K |
| 代理商： | CDCE913_1 |
www.ti.com
DESCRIPTION
The CDCE913 and CDCEL913 are modular PLL-based low-cost, high-performance, programmable clock
synthesizers, multipliers, and dividers. They generate up to 3 output clocks from a single input frequency. Each
output can be programmed in-system for any clock frequency up to 230 MHz, using the integrated configurable
PLL.
CDCE913
CDCEL913
SCAS849A–JUNE 2007–REVISED AUGUST 2007
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
The CDCx913 has separate output supply pins, V
DDOUT
, which is 1.8 V for CDCEL913 and 2.5 V to 3.3 V for
CDCE913.
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 20 pF.
Additionally, an on-chip VCXO is selectable which allows synchronization of the output frequency to an external
control signal, i.e. PWM signal.
The deep M/N divider ratio allows the generation of zero-ppm audio/video, networking (WLAN, BlueTooth,
Ethernet, GPS) or interface (USB, IEEE1394, Memory Stick) clocks from e.g., 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 electro-magnetic 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 characteristic.
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
DEFAULT DEVICE CONFIGURATION
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 SDA/SCL bus, a 2-wire serial interface.
Three programmable control inputs, S0, S1 and S2, can be used to select different frequencies, or change SSC
setting for lowering EMI, or other control features like, outputs disable to low, outputs 3-state, power down, PLL
bypass etc).
The CDCx913 operates in a 1.8-V environment. It is characterized for operation from –40
°
C to 85
°
C
Terminal Functions for CDCE913, CDCEL913
TERMINAL
I/O
DESCRIPTION
NAME
PIN TSSOP14
11, 9, 8
1
14
4
3
Y1–Y3
Xin/CLK
Xout
V
Ctrl
V
DD
O
I
O
I
LVCMOS outputs
Crystal oscillator input or LVCMOS clock Input (selectable via SDA/SCL bus)
Crystal oscillator output (leave open or pullup when not used)
VCXO control voltage (leave open or pullup when not used)
1.8-V power supply for the device
CDCEL913
: 1.8-V supply for all outputs
CDCE913:
3.3-V or 2.5-V supply for all outputs
Ground
User-programmable control input S0; LVCMOS inputs; internal pullup 500k
SDA:
bidirectional serial data input/output (default configuration), LVCMOS internal
pullup; or
S1:
user-programmable control input; LVCMOS inputs; internal pullup 500k
SCL:
serial clock input LVCMOS (default configuration), internal pullup 500k or
S2:
user-programmable control input; LVCMOS inputs; internal pullup 500k
Power
V
DDOUT
6, 7
Power
GND
S0
5, 10
2
Ground
I
SDA/S1
13
I/O or I
SCL/S2
12
I
2
Submit Documentation Feedback
Copyright 2007, Texas Instruments Incorporated
Product Folder Link(s):
CDCE913 CDCEL913
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CDCE913PERF-EVM | 功能描述:時鐘和定時器開發(fā)工具 CDCE913 Perf Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V |
| CDCE913PERF-EVM | 制造商:Texas Instruments 功能描述:CDCE913, CLOCK GENERATOR, EVAL MODULE |
| CDCE913PW | 功能描述:時鐘合成器/抖動清除器 Programmable 1PLL VCXO Clock Synth RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| CDCE913PWG4 | 功能描述:時鐘合成器/抖動清除器 Programmable 1-PLL VCXO Clock Synth RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| CDCE913PWR | 功能描述:時鐘合成器/抖動清除器 Programmable 1PLL VCXO Clock Synth RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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