Microchip SY89854U Handleiding

Microchip Niet gecategoriseerd SY89854U

Lees hieronder de 📖 handleiding in het Nederlandse voor Microchip SY89854U (6 pagina's) in de categorie Niet gecategoriseerd. Deze handleiding was nuttig voor 74 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

Download PDF
Pagina 1/6
Precision, Low Power 1:4 LVPECL
Fanout Buffer/Translator w/ Internal
Termination
SY89854U Evaluation Board
June 2005
M9999-060905
hbwhelp@micrel.com or (408) 955-1690
General Description
The SY89854U evaluation board is designed for
convenient setup and quick evaluation of the LVPECL
low power, fully differential 1:4 fanout buffer. The
evaluation board is designed to interface directly to
50Ω test equipments using a single power source.
For ease of use, the evaluation board is configured
with AC-coupled inputs and AC-coupled outputs. For
applications that require DC-coupled outputs, step-by-
step instructions for modifying the board are included.
All data sheets can be found on Micrel’s web site at:
www.micrel.com.
Features
• SY89854U low power 1:4 LVPECL fanout
buffer/translator with internal termination
• +2.5V or +3.3V power supply
• AC-coupled inputs and AC-coupled outputs
configuration for ease of use
• Outputs can be reconfigured for DC-coupled
output operation
Related Documentation
• SY89854U Precision, Low Power 1:4 LVPECL
Fanout Buffer/Translator with Internal Termination
Data Sheet
___________________________________________________________________________________
Evaluation Board
Micrel, Inc.
SY89854U Evaluation Board
June 2005
M9999-060905
hbwhelp@micrel.com or (408) 955-1690
2
Evaluation Board Description
The SY89854U is a low power, 1:4 LVPECL fanout
buffer/translator evaluation board used to evaluate
the AC-performance, jitter, and skew of the device.
The default configuration of the board is AC-coupled
inputs and AC-coupled outputs. The outputs can be
reconfigured for DC-coupled operation if needed.
AC-Coupled Mode
The AC-coupled output configuration is a standard
configuration suited for ease of use. The SY89854U
evaluation board requires a single power supply of
either 2.5V ±5% or 3.3V ±10% and interfaces with a
variety of input signal sources and interfaces directly
to 50Ω lab equipment.
Any-Input Interface
The SY89854U device is designed with a unique
internal input termination that sets the input common
mode voltage by connecting VREF-AC to VT. The
evaluation board makes use of this feature; therefore,
the inputs interface with any differential signal as
small as 100mV (200mVpp) over the supply voltage
without modifying the evaluation board.
DC-Coupled Mode
The SY89854U evaluation board can be reconfigured
for DC-coupled mode by replacing the 0.1µF
capacitors at C6 to C13 with 0402 size 0Ω resistors,
and removing resistors R1 to R8. Standard DC-
coupled LVPECL termination is 50Ω to V
CC
–2V, which
can be achieved by split supplies, making it easy to
interface the evaluation board to 50Ω lab equipment.
To do this, a 3.3V supply is split into +2V and –1.3V,
and a +2.5V supply is split into +2V and –0.5V. The
+2V offset in the power supply configuration provides
the correct termination for the device by setting the
GND potential to 2V below the V
CC
supply into 50Ω.
The V
EE
voltage is then set at –0.5V for 2.5V
operation or –1.3V for 3.3V to ensure proper V
CC
to
V
EE
voltage potential.
Micrel, Inc.
SY89854U Evaluation Board
June 2005
M9999-060905
hbwhelp@micrel.com or (408) 955-1690
3
Evaluation Board
SY89854U LVPECL Evaluation Board
I/O Power
Supply
V
CC
GND V
EE
R1–R8 C6–C13
AC-Coupled Input/AC-Coupled Output
(1)
2.5V +2.5V 0V 0V 83Ω 0.1µF
AC-Coupled Input/AC-Coupled Output
(1)
3.3V +3.3V 0V 0V 83Ω 0.1µF
AC-Coupled Input/DC-Coupled Output 2.5V +2V 0V –0.5 n/a 0Ω
AC-Coupled Input/DC-Coupled Output 3.3V +2V 0V –1.3 n/a 0Ω
Table 1. SY89854U Configuration
Note:
1. Default configuration.

Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: SY89854U

Heb je hulp nodig?

Als je hulp nodig hebt met Microchip SY89854U stel dan hieronder een vraag en andere gebruikers zullen je antwoorden


Handleiding Niet gecategoriseerd Microchip

Microchip

Microchip EVB-USB2504 Handleiding

17 November 2024
Microchip

Microchip AT97SC3204 Handleiding

17 November 2024
Microchip

Microchip ATECC608B Handleiding

16 Juli 2024
Microchip

Microchip HV860 Handleiding

16 Juli 2024
Microchip

Microchip EVB-LAN9255 Handleiding

16 Juli 2024
Microchip

Microchip LX4580 Handleiding

16 Juli 2024
Microchip

Microchip LX7720 Handleiding

16 Juli 2024
Microchip

Microchip AT32UC3C0128C Handleiding

10 April 2024
Microchip

Microchip AT32UC3C1512C Handleiding

10 April 2024
Microchip

Microchip AT32UC3A3256 Handleiding

10 April 2024

Handleiding Niet gecategoriseerd

Nieuwste handleidingen voor Niet gecategoriseerd

Livarno Lux

Livarno Lux IAN 071407 Handleiding

29 November 2024
Livarno Lux

Livarno Lux IAN 317128 Handleiding

29 November 2024
Livarno Lux

Livarno Lux IAN 049213 Handleiding

29 November 2024
Livarno Lux

Livarno Lux ST-1002 Handleiding

29 November 2024
Livarno Lux

Livarno Lux HG02489 Handleiding

29 November 2024
Livarno Lux

Livarno Lux HG02189 Handleiding

29 November 2024
Livarno Lux

Livarno Lux IAN 365198 Handleiding

29 November 2024
Livarno Lux

Livarno Lux IAN 367074 Handleiding

29 November 2024
Livarno Lux

Livarno Lux HG00701 Handleiding

29 November 2024
Livarno Lux

Livarno Lux IAN 337273 Handleiding

29 November 2024