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M02050-15
3.3/5V Limiting Amplifier for Aplications to 2.5 Gbps
Preliminary - Rev V5P
Applications
• 2.5 Gbps STM-16/OC-48 SDH/SONET
• 1.06, 2.12 and 4.24 Gbps Fibre Channel
• 1.25 Gbps Ethernet
• 2.67 Gbps SDH/SONET with FEC
Features
• Operates with a 3.3 or 5V supply
• 4 mV typical input sensitivity at 2.5 Gbps
• PECL outputs
• Rate Selection for 1.25 Gbps operation
• Average Receive power monitor output (RSSIAVG)
• Peak-to-peak Receive power monitor output (RSSIPP)
• On-chip DC offset cancellation circuit
• Low power (< 180 mW at 3.3V)
• Programmable CML Output Amplitude Level
• Output Jam Function
• 16 pin 3x3 QFN package
The M02050-15 is an integrated high-gain limiting amplifier. The M02050-15 features PECL outputs and is intended
for use in applications to 2.5 Gbps. Full output swing is achieved even at minimum input sensitivity. The M02050-15
can operate with a 3.3V or 5V supply.
Rate select is supported for SFP applications and/or to achieve optimum sensitivity at data rates 1.25 Gbps.
When rate select is high, optimum sensitivity is achieved at 2.5 Gbps.
The M02050-15 also includes two analog RSSI outputs proportional to either the average or peak to peak input sig-
nal and a programmable signal-level detector allowing the user to set thresholds at which the logic outputs are
enabled.
Other available solutions: M02049-15 3.3/5V Limiting Amplifier for Applications to 4.3 Gbps (CML outputs)
M02040-15 3.3/5V Limiting Amplifier for Applications to 2.125 Gbps (PECL outputs)
M02043-15 3.3/5V Limiting Amplifier for Applications to 4.3 Gbps (CML outputs)
1.25 Gbps and 4.25 Gbps SFP reference designs available on MACOM’s website.
Typical Applications Diagram
+3.3 V
Photodiode
RATESELControl RATE SEL
IREF
12.1 kΩ
AC-Coupled
to TIA
DINP
MT02I0A13
VTT
Biasing
Limiting
Amplifier
MON
DINN
Jam
optional
Output
Buffer
PECLP
PECLN
Clock Data
Recovery
Unit
Offset cancel
RxAVGIN
RSSIAVG
REXT
Level
Shift
Level
Detect
Threshold
Setting
Circuit
Comparator
Regulator
STSET
RST
VCC3 VCC
RSSIPP
AC or DC Coupled
(as described in
Applications Information)
LOS
1
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
http://www.macom.com/support

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M02050-15
3.3/5V Limiting Amplifier for Aplications to 2.5 Gbps
Preliminary - Rev V5P
Ordering Information
Part Number
Package
M02050-15 *
M02050-15 in QFN16 package
M02050-15EVM
Evaluation board with M02050-15
* The letter “G” designator after the part number indicates that the device is RoHS-compliant.
Operating Temperature
–40 °C to 85 °C
–40 °C to 85 °C
Revision History
Revision
Level
V5P
D (V4P)
Preliminary
Preliminary
Date
May 2015
April 2005
Description
Updated logos and page layout. No content changes.
Separated the M02049 and M02050 data sheets. New document number for the M02049 is 02049-
15-DSH-002-D.
Update the following DC specifications: ICC, RINDIFF and VOH. Update the following ac specifications:
VIN(MIN), vn, VLOS, HYS, DJ, RJ, tr/tf, TLOS_ON, and TLOS_OFF. Update RST and RSSI values for this
revision of the part.
M02050 Typical Eye Diagram
M02050-15 Pin Configuration
16 13
10 mVPP differential input
2.5 Gbps
150 mV/div
80 ps/div
GND
VCC
PECLN
PECLP
1
4
Center Pad
Connect to GND
58
12 RxAvgIN
GND
DINN
9 DINP
2
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
http://www.macom.com/support

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M02050-15
3.3/5V Limiting Amplifier for Aplications to 2.5 Gbps
Preliminary - Rev V5P
1.0 Product Specification
1.1 Absolute Maximum Ratings
These are the absolute maximum ratings at or beyond which the IC can be expected to fail or be damaged. Reli-
able operation at these extremes for any length of time is not implied.
NOTE:
The package bottom must be adequately grounded to ensure correct
thermal and electrical performance, and it is recommended that vias
are inserted through to a lower ground plane.
Table 1-1. Absolute Maximum Ratings
Symbol
Parameter
VCC
TSTG
PECLP, PECLN
I(PECLP), I(PECLN)
|DINP - DINN|
DINP, DINN
STSET
JAM
LOS
Rate_Sel
IREF
I(RSSIAVG)
RSSIPP
I(LOS)
Power supply voltage (VCC-GND)
Storage temperature
PECL Output pins voltage
PECL Output pins maximum continuous current (delivered to load)
Data input pins differential voltage
Data input pins voltage meeting |DINP - DINN| requirement
Signal detect threshold setting pin voltage
Output enable pin voltage
Status Output pins voltage
Rate Select input pin voltage
Current into Reference input
Current into RSSIavg input
RSSIPP pin voltage
Current into Loss of Signal pin
Rating
-0.5 to +5.75V
-65 to +150
VCC - 2 to VCC + 0.4
30
0.80
GND to VCC3 + 0.4
GND to VCC + 0.4
GND to VCC + 0.4
GND to VCC + 0.4
GND to VCC + 0.4
+0 to -120
+0 to -3
GND to +3.6
+1500 to -100
Units
V
°C
V
mA
V
V
V
V
V
V
µA
mA
V
µA
3
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
http://www.macom.com/support