Microchip SY89856U Manual

Microchip Ikke kategoriseret SY89856U

Læs gratis den danske manual til Microchip SY89856U (8 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 23 personer og har en gennemsnitlig bedømmelse på 4.3 stjerner ud af 12 anmeldelser. Har du et spørgsmål om Microchip SY89856U, eller vil du spørge andre brugere om produktet?

Download PDF

Side 1/8

2.0GHz, Low Power, 1:6 LVPECL

Fanout Buffer with 2:1 Input MUX

and Internal Termination

SY89856U Evaluation Board

MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

March 2005

M9999-031505

hbwhelp@micrel.com or (408) 955-1690

General Description

The SY89856U evaluation board is designed for

convenient setup and quick evaluation of the

SY89856U. The board is optimized to interface directly

to a 50Ω oscilloscope.

For best AC performance, the board is configured in AC-

coupled In and AC-coupled Out configuration. For

applications that require a DC-coupled configuration,

step-by-step instructions for modifying the board are

included.

Features

• Fully assembled and tested SY89856U

• +2.5V or +3.3V power supply

• AC-coupled configuration for ease-of-use

• I/O interface includes on-board termination

• Fully assembled and tested

• Can be reconfigured for DC-coupling operation

Related Documentation

• SY89856U 2.0GHz, Low Power, 1:6 LVPECL

Fanout Buffer with 2:1 Input MUX and Internal

Termination Data Sheet

_______________________________________________________________________________________________________

Evaluation Board

Micrel, Inc. SY89856U Evaluation Board

March 2005

2 M9999-031505

hbwhelp@micrel.com or (408) 955-1690

Evaluation Board Description

The default configuration for the SY89856U board is

AC-coupled. The choice between AC-coupled and DC-

coupled configurations offers the user flexibility for

specific applications. With the current board layout, Q0

is meant for DC-coupled operation. In default AC-

coupled configuration, Q0 is not brought out.

AC-Coupled Evaluation Board

The AC-coupled configuration is suited to most

customer applications and is preferred by the majority of

users because of its ease-of-use. It requires only a

single power supply and offers the most flexibility in

interfacing to a variety of signal sources.

The DC-bias levels and AC-coupling capacitors are

supplied on-board for each input, making it unnecessary

to vary the offset voltage or change any components on

the board as the power supply voltage varies over the

+2.5V +5% and +3.3V +10% operating range. The user

needs only to supply a minimum input voltage swing and

the bias voltage will automatically adjust the input to the

correct level as the power supply voltage varies.

DC-Coupled Evaluation Board

For applications that are not suited to AC-coupling such

as clock applications that can be turned off for extended

periods of time, the board can be user-configured for

DC-coupled operation.

This can be accomplished by modifying the board to use

two power supplies into a “split-supply configuration”.

Since LVPECL is referenced to V

, and standard PECL

termination is 50Ω to V

-2V. Split-supply is an easy

method to interface to a 50Ω (to ground) scope.

Therefore, a 3.3V supply will be split into +2V and -1.3V,

and a 2.5V supply will be split into a +2V and -0.5V.

The +2V offset in this two-power supply configuration

provides the correct terminations for the device by

setting the Ground potential on the board to be exactly 2

volts below the V

supply. The V

voltage is then set

to –1.3V for 3.3V devices, or –0.5V for 2.5V devices to

ensure proper V

to V

voltage difference.

Any-Input Interface

The unique internal input termination sets the input

common mode voltage. This enables the input to

interface with any differential signal over the supply

voltage without modifying the board.

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	SY89856U

Har du brug for hjælp?

Hvis du har brug for hjælp til Microchip SY89856U stil et spørgsmål nedenfor, og andre brugere vil svare dig

Dit navn*

Din email*

Skriv dit spørgsmål her

Ikke kategoriseret Microchip Manualer

Microchip HS12-100D0/12DS2F Manual

18 Februar 2025

Microchip HSA0-040SDA/A0SA10 Manual

18 Februar 2025

Microchip HSA0-040SIA/A0S1F Manual

18 Februar 2025

Microchip HT12-100S0s/12ST25 Manual

17 Februar 2025

Microchip EMC2103-2 Manual

17 Februar 2025

Microchip EMC1047 Manual

17 Februar 2025

Microchip HCS201 Manual

17 Februar 2025

Microchip LE9653 Manual

17 Februar 2025

Microchip LAN7430 Manual

17 Februar 2025

Microchip HCS500 Manual

17 Februar 2025

Ikke kategoriseret Manualer

Nyeste Ikke kategoriseret Manualer

Planet XGPN-100 Manual

15 Juni 2025

Proficook PC-EKA 1283 Manual

15 Juni 2025

OmniMount OBSP8 Manual

15 Juni 2025

Levenhuk FS10 Manual

15 Juni 2025

Vestil PM4-2148-LP Manual

15 Juni 2025

ElectriQ STRV-W1-B Manual

15 Juni 2025

Adler AD 4521 Manual

15 Juni 2025

AMX HydraPort HPX-AV102 Manual

15 Juni 2025

Hughes & Kettner Red Box Mk II Manual

15 Juni 2025

Hughes & Kettner Quantum QC 412 Manual

15 Juni 2025