SY88903KC Micrel Inc, SY88903KC Datasheet

IC AMP POST PECL 3.3V TTL 10MSOP

SY88903KC

Manufacturer Part Number
SY88903KC
Description
IC AMP POST PECL 3.3V TTL 10MSOP
Manufacturer
Micrel Inc
Type
Limiting Postamplifierr
Datasheet
1.SY88903AVKG.pdf (7 pages)

Specifications of SY88903KC

Applications
Optical Networks
Mounting Type
Surface Mount
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
SY88903KC
Manufacturer:
MICREL
Quantity:
2 200
Micrel, Inc.
M9999-061907
hbwhelp@micrel.com or (408) 955-1690
FEATURES
APPLICATIONS
BLOCK DIAGRAM
Up to 1.25Gbps operation
Low noise
Chatter-Free LOS Generation
Open Collector TTL LOS Output
TTL /EN Input
Differential PECL inputs for data
Single power supply
Designed for use with SY88902 and SY88904
Available in a tiny 10-pin (3mm) MSOP
1.25Gbps Gigabit Ethernet
531Mbps and 1062Mbps Fibre Channel
622Mbps SONET
Gigabit Interface Converter
LOS
V
GND
V
D
D
REF
CC
LVL
IN
IN
Limiting
Amplifier
Not recommended for new designs
LIMITING POST AMPLIFIER
1.25Gbps HIGH-SPEED
1
Level
Detect
ECL
Buffer
and wide bandwidth is ideal for use as a post amplifier in
fiber-optic receivers with data rates up to 1.25Gbps.
Signals as small as 5mVp-p can be amplified to drive
devices with PECL inputs. The SY88903 generates a
chatter-free Loss of Signal (LOS) open collector TTL
output.
function to identify when the input signal has been lost.
This information can be fed back to the /EN input of the
device to maintain stability under loss of signal conditions.
Using LOS
be adjusted. The LOS
connecting a resistor divider between V
Figure 3. Figure 4 shows the relationship between input
level sensitivity and the voltage set on LOS
shows the relationship between input level sensitivity and
resistor divider ratio.
requires pull-up resistor for proper operation, Figure 1.
DESCRIPTION
The SY88903 limiting post amplifier with its high gain
The SY88903 incorporates a programmble level detect
The LOS output is a TTL open collector output that
Figure 1. LOS Output with Desired Rise Time
LVL
Enable
pin the sensitivity of the level detect can
SY88903
LVL
EN
D
D
LOS
OUT
OUT
LOS
voltage can be set by
+5V
Rev.: I
Issue Date: June 2007
2k
CC
LVL
SY88903
and V
. Figure 5
Amendment: /0
SY88903
REF
,

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SY88903KC Summary of contents

Page 1

Micrel, Inc. FEATURES Up to 1.25Gbps operation Low noise Chatter-Free LOS Generation Open Collector TTL LOS Output TTL /EN Input Differential PECL inputs for data Single power supply Designed for use with SY88902 and SY88904 Available in a tiny 10-pin ...

Page 2

... Exposure to absolute maximum ratlng conditions for extended periods may affect device reliability. M9999-061907 hbwhelp@micrel.com or (408) 955-1690 Ordering Information Package Part Number Type SY88903KC K10-1 Commercial SY88903KCTR(1) K10-1 Commercial SY88903KH K10-1 Commercial SY88903KHTR(1) K10-1 Commercial Note: 1. Tape and Reel. ...

Page 3

Micrel, Inc. DC ELECTRICAL CHARACTERISTICS V = +5V ±10 50Ω LOAD Symbol Parameter (1) I Power Supply Current CC I /EN Input LOW Current IL I /EN Input HIGH Current IH V Common Mode Range ...

Page 4

Micrel, Inc. APPLICATION INFORMATION Output Termination The SY88903 outputs must be terminated with a 50Ω load to V – 2V (or Thevenin equivalent). CC Layout and PCB Design Since the SY88903 is a high-frequency component, performance can largely be determined ...

Page 5

Micrel, Inc. PERFORMANCE CURVE 100.00 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 100.00 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 Figure 5. LOS Assert and Deassert Levels vs Resistor Divider M9999-061907 hbwhelp@micrel.com or (408) ...

Page 6

Micrel, Inc. APPLICATION EXAMPLE FOR 3-CHIP SET SOLUTION M9999-061907 hbwhelp@micrel.com or (408) 955-1690 6 SY88903 ...

Page 7

Micrel, Inc. 10 LEAD MSOP (K10-1) MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility ...

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