MAX3746 Maxim Integrated Products, MAX3746 Datasheet
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MAX3746
Manufacturer Part Number
MAX3746
Description
Limiting Amplifier
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX3746.pdf
(13 pages)
www.DataSheet4U.com
The MAX3746 multirate limiting amplifier functions as a
data quantizer for SONET, Fibre-Channel, and Gigabit
Ethernet optical receivers. The amplifier accepts a wide
range of input voltages and provides selectable-level,
current-mode logic (CML) output voltages with con-
trolled edge speeds. A received-signal-strength indica-
tor (RSSI) is available when the MAX3746 is
DC-coupled to the MAX3744/MAX3724 SFP transim-
pedance amplifier (TIA). A receiver consisting of the
MAX3744/MAX3724 and the MAX3746 can provide up
to 19dB RSSI dynamic range. Additional features
include a programmable loss-of-signal (LOS) detect, an
optional disable function (DISABLE), and an
output-signal polarity reversal (OUTPOL). Output dis-
able can be used to implement squelch.
The combination of the MAX3746 and the MAX3744/
MAX3724 allows for the implementation of all the small-
form-factor SFF-8472 digital diagnostic specifications
using a standard 4-pin TO-46 header.
The MAX3746 is pin-for-pin compatible with the
MAX3748A limiting amplifier and consumes 30% less
power. The MAX3746 is packaged in a 3mm x 3mm,
16-pin QFN package.
19-3386; Rev 2; 6/07
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Gigabit Ethernet SFF/SFP Transceiver Modules
Fibre-Channel SFF/SFP Transceiver Modules
Multirate OC-12 to OC48-FEC SFF/SFP
Transceiver Modules
________________________________________________________________ Maxim Integrated Products
4-PIN TO HEADER
3-INPUT DIAGNOSTIC
General Description
MONITOR
DS1859
MAX3744 TIA
3kΩ
R1
Applications
Low-Power, 622Mbps to 3.2Gbps
C1
0.1μF
IN+
IN-
RSSI
SFP OPTICAL RECEIVER
OUTPOL
MAX3746
TH
R
TH
= 14kΩ
GND
V
CC
♦ SFP Reference Design Available
♦ Low 115mW Power Consumption
♦ 16-Pin QFN Package with 3mm x 3mm Footprint
♦ 70ps Rise and Fall Time
♦ Loss-of-Signal with Programmable Threshold
♦ RSSI Interface (with MAX3744/MAX3724 TIA)
♦ Output Disable
♦ Polarity Select
♦ 8.4ps
♦ Improved EMI Performance
♦ Selectable CML Output levels
♦ Pin Compatible with MAX3748A
* The MAX3746HETE is a hybrid lead-free package. See the
Detailed Description section for more information.
Pin Configuration appears at end of data sheet.
Typical Operating Circuits continued at end of data sheet.
MAX3746ETE
MAX3746HETE*
DISABLE
PART
LOS
OUT+
OUT-
P-P
SUPPLY FILTER
Deterministic Jitter (3.2Gbps)
Limiting Amplifier
0.1μF
0.1μF
Typical Operating Circuits
-40°C to +85°C 16 Thin QFN
-40°C to +85°C 16 Thin QFN
TEMP RANGE
Ordering Information
4.7kΩ TO 10kΩ
50Ω
50Ω
HOST BOARD
HOST FILTER
V
2.97V TO 3.6V
LOS
CC
SERDES
PIN-
PACKAGE
_RX
Features
PKG CODE
T1633F-3
T1633F-3
1