Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

FD7445TLE-25.0M-PLE-T250 Datasheet(PDF) 4 Page - Pletronics, Inc.

Part # FD7445TLE-25.0M-PLE-T250
Description  Multi-Output CMOS Clock Oscillator
Download  19 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  PLETRONICS [Pletronics, Inc.]
Direct Link  http://www.pletronics.com
Logo PLETRONICS - Pletronics, Inc.

FD7445TLE-25.0M-PLE-T250 Datasheet(HTML) 4 Page - Pletronics, Inc.

  FD7445TLE-25.0M-PLE-T250 Datasheet HTML 1Page - Pletronics, Inc. FD7445TLE-25.0M-PLE-T250 Datasheet HTML 2Page - Pletronics, Inc. FD7445TLE-25.0M-PLE-T250 Datasheet HTML 3Page - Pletronics, Inc. FD7445TLE-25.0M-PLE-T250 Datasheet HTML 4Page - Pletronics, Inc. FD7445TLE-25.0M-PLE-T250 Datasheet HTML 5Page - Pletronics, Inc. FD7445TLE-25.0M-PLE-T250 Datasheet HTML 6Page - Pletronics, Inc. FD7445TLE-25.0M-PLE-T250 Datasheet HTML 7Page - Pletronics, Inc. FD7445TLE-25.0M-PLE-T250 Datasheet HTML 8Page - Pletronics, Inc. FD7445TLE-25.0M-PLE-T250 Datasheet HTML 9Page - Pletronics, Inc. Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 19 page
background image
FD7T Series Multi-Output
CMOS Clock Oscillator
May 2008
www.pletronics.com
425-776-1880
4
Description:
The FD7T series Multi-Output CMOS Clock Oscillator is a modular PLL-based low cost, high-performance,
programmable oscillator. The FD7T generates up to seven output frequencies, OUT1 through OUT7.
Frequencies are mutually independent and may be programmed to any frequency from 100KHz to 230-
MHZ and one output can be as low as 12KHz. There are versions including 1 to 4 PLLs, the number of
PLLs impacts the cost.
The FD7T base frequency, as noted in the device part number, is established during manufacture and is
permanently fixed. For convenience, the divider for output OUT1 and the remaining seven output
frequencies, and their characteristics may be pre-programmed at the factory, or field programmed.
The FD7T has a separate output supply pin, V
DDOUT, for either 1.8, 2.5 or 3.3V output logic levels. The
device supply, V
DD which provides power to all the internal circuits, is nominally 1.8V.
The FD7xxxTL version has increased output drive for then 1.8V output levels. This version can be used at
1.8V V
DDOUT only.
The deep M/N PLL divider ratio allows the generation of zero-ppm clocks for applications such as WLAN,
BlueTooth, Ethernet, GPS, USB, IEEE1394, etc. from the base frequency.
Each of the independent PLLs supports Spread Spectrum Clocking (SSC). SSC may be programmed to
be either center-spread or down-spread. This is an important technique to reduce electro-magnetic
interference (EMI).
The device supports non-volatile eePROM programming for easy customization of the device. As
shipped, the device is pre-programmed. Standard combinations are denoted by three characters in the
device part number. However, the FD7T may be reprogrammed to a different configuration.
Reprogramming may be either prior to assembly, or in-circuit via a 2-wire SDA/SCL I
2C bus.
Three programmable control inputs, S0, S1 and S2, may be used to control various aspects of FD7T
operation including selection of alternative frequency set(s), selection of SSC functionality, output tri-state
and power-down.
Reference Oscillator
The Reference Oscillator is an AT cut quartz crystal based oscillator. This oscillator is very similar to the
Pletronics SM77xxH product oscillator. This signal is the lowest jitter and can be an output on Out1,
Out2 or Out3 and can be divided down by the Divider #1. The user may specify any frequency between
12MHz and 32MHz for this reference. All output frequencies are derived from (referenced to) this
Reference Oscillator.
Reference Oscillator - VCXO
The reference oscillator frequency can be modulated by the Vcontrol input, if the VCXO option is
selected. As this Reference Signal is the reference for all other parts of this circuit, all PLLs will be
modulated also.
The VCXO input has a limited voltage range, the VCXO is associated with the internal 1.8V core. A
resistor in series with the Vcontrol input will permit interfacing to 3.3V analog circuits, the voltage range
that changes the frequency will still be limited but the larger voltages swings will not cause problems.


Similar Part No. - FD7445TLE-25.0M-PLE-T250

ManufacturerPart #DatasheetDescription
logo
List of Unclassifed Man...
FD7-10 ETC2-FD7-10 Datasheet
75Kb / 1P
   Power Transformer Chassis Mount: Quick Pack
logo
TRIAD MAGNETICS
FD7-10 TRIAD-FD7-10 Datasheet
65Kb / 1P
   Chassis Mount: Quick Pack
logo
List of Unclassifed Man...
FD7-12 ETC2-FD7-12 Datasheet
75Kb / 1P
   Power Transformer Chassis Mount: Quick Pack
logo
TRIAD MAGNETICS
FD7-12 TRIAD-FD7-12 Datasheet
65Kb / 1P
   Chassis Mount: Quick Pack
FD7-120 TRIAD-FD7-120 Datasheet
62Kb / 1P
   Chassis Mount: Quick Pack
More results

Similar Description - FD7445TLE-25.0M-PLE-T250

ManufacturerPart #DatasheetDescription
logo
ECS, Inc.
ECS-300C ECS-ECS-300C Datasheet
154Kb / 1P
   DUAL OUTPUT CMOS CLOCK OSCILLATOR
ECS-300CX ECS-ECS-300CX Datasheet
157Kb / 1P
   DUAL OUTPUT CMOS CLOCK OSCILLATOR
logo
List of Unclassifed Man...
ECS-300C ETC1-ECS-300C Datasheet
135Kb / 1P
   DUAL OUTPUT CMOS CLOCK OSCILLATOR
logo
QUARTZCOM the communica...
MCO-6SP QUARTZCOM-MCO-6SP Datasheet
119Kb / 1P
   SMD Clock Oscillator Programmable Output signal CMOS
logo
Pletronics, Inc.
FD51XXT PLETRONICS-FD51XXT Datasheet
134Kb / 11P
   CMOS Clock Oscillator
logo
Wolfgang Knap
SXO2000 WK-SXO2000 Datasheet
35Kb / 1P
   HS CMOS CLOCK OSCILLATOR
logo
List of Unclassifed Man...
CB3 ETC1-CB3 Datasheet
145Kb / 4P
   CMOS/TTL CLOCK OSCILLATOR
logo
Wolfgang Knap
SXO100 WK-SXO100 Datasheet
30Kb / 1P
   CMOS/TTL CLOCK-OSCILLATOR
logo
CTS Corporation
636 CTS-636 Datasheet
154Kb / 4P
   CMOS/TTL CLOCK OSCILLATOR
logo
Pletronics, Inc.
FD5T PLETRONICS-FD5T Datasheet
213Kb / 12P
   Programmable CMOS Clock Oscillator
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com