MAX3747AEUB+T-MAX3747EUB+ Fast Delivery |IC PHOENIX CO.,LIMITED

MAX3747AEUB+T ,155Mbps to 3.2Gbps, Low-Power SFP Limiting AmplifierApplications+Denotes a lead(Pb)-free/RoHS-compliant package.Gigabit Ethernet SFP/SFF Optical Transc ..
MAX3747AEUB+T ,155Mbps to 3.2Gbps, Low-Power SFP Limiting AmplifierELECTRICAL CHARACTERISTICS(V = +2.97V to +3.63V, CML output load is 50Ω to V , T = -40°C to +85°C. ..
MAX3747EUB+ ,155Mbps to 3.2Gbps, Low-Power SFP Limiting AmplifierFeaturesThe MAX3747A/MAX3747B multirate limiting amplifiers♦ Pin Compatible with Micrel SY88993Vfun ..
MAX3748AETE ,Compact 155Mbps to 3.2Gbps Limiting AmplifierFeaturesThe MAX3748/MAX3748A multirate limiting amplifier func- SFP Reference Design Availabletion ..
MAX3748AETE ,Compact 155Mbps to 3.2Gbps Limiting AmplifierELECTRICAL CHARACTERISTICS(V = 2.97V to 3.63V, ambient temperature = -40°C to +85°C, CML output loa ..
MAX3748AETE-T ,Compact 155Mbps to 4.25Gbps Limiting AmplifierApplications#Denotes a RoHS-compliant device that may include lead thatis exempt under the RoHS req ..
MAX733EPA ,+12V/+15V Step-Up Current-Mode Pwm Regulatorsapplications information, refer to AN-4.1, MAX732 E V Surface-Mount Evaluation Board and Flash EE ..
MAX733EWE ,+12V/+15V Step-Up Current-Mode Pwm RegulatorsGeneral Description The MAX732/MAR733 are CMOS step-up DC-DC switch- mode regulators. The MAX73 ..
MAX7347AEE+ ,2-Wire Interfaced Low-EMI Key Switch and Sounder Controllers
MAX7349AEG+ ,2-Wire Interfaced Low-EMI Key Switch and Sounder Controllers
MAX734CPA ,+12V, 120mA Flash Memory Programming Supply
MAX734CPA ,+12V, 120mA Flash Memory Programming Supply

MAX3747AEUB+T-MAX3747EUB+
155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifier
155Mbps to 3.2Gbps, Low-Power SFP
Limiting Amplifiers
EVALUATION KIT AVAILABLE
MAX3747A/MAX3747B
Typical Application Circuit
General Description
The MAX3747A/MAX3747B multirate limiting amplifiers
function as data quantizers for OC-3 through OC-48 syn-
chronous optical network (SONET), Fibre-Channel, and
Gigabit Ethernet optical receivers. They are pin-for-pin
compatible with the SY88993V from Micrel
Semiconductor, Inc. The amplifiers accept a wide range
of input voltages and provide constant-level, current-
mode logic (CML) output voltages with controlled edge
speeds. The MAX3747A/MAX3747B output voltages are
800mVP-P. The MAX3747B has enhanced LOS operation
under overload conditions.
The MAX3747A/MAX3747B limiting amplifiers feature a
programmable loss-of-signal detect (LOS) and an
optional disable function (DISABLE) that can be com-
bined to implement squelch.
The MAX3747A/MAX3747B are available in a 3mm, 10-
pin µMAX® package ideal for small form-
factor receivers.
Applications
Gigabit Ethernet SFP/SFF Optical Transceiver Modules
1G/2G Fibre-Channel SFP/SFF Optical Transceiver
Modules
Multirate OC-3 to OC-48 FEC SFP/SFF Optical
Transceiver Modules
10G LX4 Transceiver Modules
FeaturesPin Compatible with Micrel SY88993V155Mbps to 3.2Gbps Operation> 57dB of Gain< 10-12BER with 2mVP-PInput Amplitude18mA Supply CurrentChatter-Free LOS with Programmable ThresholdOutput DISABLE FunctionPECL-Compatible Inputs
Ordering Information
MAX3745
SUPPLY FILTER
VCC
MAX4004DS1859
VCC
3-INPUT
DIAGNOSTIC
MONITOR
SFP OPTICAL RECEIVER
5-PIN TO-HEADER
HOST BOARD
HOST FILTER
SERDES
50Ω
50Ω
MAX3747A
MAX3747B
VREFTHGNDLOSDISABLE
IN-
IN+
OUT-
OUT+
VCC
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
50Ω50Ω
RTH1
RTH2
RTH1 + RTH2 ≥ 5kΩ
VCC_RX
VCC_HOST
LOS
4.7kΩ TO 10kΩ
PARTTEMP RANGEPIN-PACKAGE
MAX3747AEUB+-40°C to +85°C10 µMAX
MAX3747BEUB+-40°C to +85°C10 µMAX
Pin Configuration appears at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
+Denotes a lead(Pb)-free/RoHS-compliant package.
MAX3747A/MAX3747B
155Mbps to 3.2Gbps, Low-Power SFP
Limiting Amplifiers
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= +2.97V to +3.63V, CML output load is 50Ωto VCC, TA= -40°C to +85°C. Typical values are at VCC= +3.3V and TA= +25°C,
unless otherwise specified.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Power-Supply Voltage (VCC).................................-0.5V to +4.5V
Voltage at IN+, IN-..........................(VCC- 2.4V) to (VCC+ 0.5V)
Voltage at DISABLE, LOS, TH, VREF..........-0.5V to (VCC+ 0.5V)
Current into LOS...................................................-1mA to +9mA
Current into VREF..................................................................2mA
Differential Input Voltage (IN+ - IN-).....................................2.5V
Continuous Current at CML Outputs
(OUT+, OUT-)..............................................-25mA to +25mA
Continuous Power Dissipation (TA= +70°C)
10-Pin µMAX (derate 6.9mW/°C above +70°C)...........552mW
Operating Junction Temperature Range (TJ).......-55°C to +150°C
Storage Ambient Temperature Range (TS)...........-55°C to +150°C
Lead Temperature (soldering, 10s)......................................+300°C
Soldering Temperature (reflow)............................................+260°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
POWER SUPPLYAX 3747A i ncl ud i ng the C M L outp ut cur r ent3641AX 3747B i ncl ud i ng the C M L outp ut cur r ent3843
MAX3747A excluding the CML output
current1824Supply Current (Note 2)ICC
MAX3747B excluding the CML output
current2026
Power-Supply Noise RejectionPSNRf < 2MHz30dB
INPUT SPECIFICATION
Input SensitivityVIN-MIN(Note 3)4mVP-P
Input OverloadVIN-MAX(Note 3)1200mVP-P
OUTPUT SPECIFICATION
Output ResistanceROUT(Note 4)425058Ω
Differential Output Return LossDUT is powered on, f < 3GHz15dB
CML Differential Output VoltageMAX3747A/MAX3747B
4mVP-P ≤ VIN ≤ 1200mVP-P6008001000mVP-P
Differential Output Signal When
Disabled
AC-coupled outputs, VIN-MAX applied to the
input (Note 4)15mVP-P
Data-Output Transition Time20% to 80% (Note 4)70120ps
TRANSFER CHARACTERISTIC
K28.5 pattern at 3.2Gbps13.219
PRBS 223 - 1 equivalent pattern at 2.7Gbps
(Note 6)1425
K28.5 pattern at 2.1Gbps1217Deterministic Jitter (Notes 4, 5)DJRBS 22 3 - 1 eq ui val ent p atter n at 155M b p s
(Note 6)85150P-P
Random JitterVIN = 4mVP-P (Notes 4, 7)3.55psRMS
MAX3747A/MAX3747B
155Mbps to 3.2Gbps, Low-Power SFP
Limiting Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VCC= +2.97V to +3.63V, CML output load is 50Ωto VCC, TA= -40°C to +85°C. Typical values are at VCC= +3.3V and TA= +25°C,
unless otherwise specified.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Input-Referred NoiseVIN = 4mVP-P (Note 4)120150µVRMS
Low-Frequency Cutoff6.4kHz
LOS Hysteresis10log(VDEASSERT / VASSERT) (Note 4)1.25dB
MAX3747A (Notes 4, 8)LOS Assert/Deassert TimeMAX3747B (Notes 4, 8, 9)2.340.0µs
Low LOS Assert LevelVTH = -1.3V (Notes 4, 10)2.54.15.9mVP-P
Low LOS Deassert LevelVTH = -1.3V (Notes 4, 10)6.29.3mVP-P
Medium LOS Assert LevelVTH = -0.68V (Notes 4, 10)22.029.036.0mVP-P
Medium LOS Deassert LevelVTH = -0.68V (Notes 4, 10)44.862.0mVP-P
High LOS Assert LevelVTH = -0.114V (Notes 4, 10)36.053.763.6mVP-P
High LOS Deassert LevelVTH = -0.114V (Notes 4, 10)86.0115mVP-P
TTL/CMOS I/O
VREF VoltageVREFVCC -
VCC -
1.3V
VCC -
1.19V
LOS Output High VoltageVOHRLOS = 4.7kΩ to 10kΩ to VCC_HOST (3V)2.4V
LOS Output Low VoltageVOLRLOS = 4.7kΩ to 10kΩ to VCC_HOST (3.6V)0.4V
DISABLE Input HighVIH2.0V
DISABLE Input LowVIL0.8V
DISABLE Input CurrentRLOS = 4.7kΩ to 10kΩ to VCC_HOST10µA
Note 1:The data-input transition time is controlled by a 4th-order Bessel filter with f-3dB= 0.75 x 2.667GHz for all data rates of
2.667Gbps and below. The f-3db= 0.75 x 3.2GHz for a data rate of 3.2Gbps.
Note 2:Supply current is measured with unterminated outputs or with AC-coupled output termination (see Figure 1).
Note 3:Between sensitivity and overload, all AC specifications are met and the output is 0.95 x limited output amplitude.
Note 4:Guaranteed by design and characterization.
Note 5:The deterministic jitter (DJ) caused by the input filter is not included in the DJ generation specification.
Note 6:The PRBS 223- 1 equivalent pattern consists of a K28.5 pattern plus 240 ones plus K28.5 pattern plus 240 zeros.
Note 7:Random jitter was measured without using a filter at the input.
Note 8:The signal at the input is switched between two amplitudes, Signal_ON and Signal_OFF, as shown in Figure 2A.
Note 9:The signal at the input is switched between 1.2VP-Pand Signal_OFF as shown in Figure 2B.
Note 10:VTHis the voltage at pin 5 referenced to VCC(see Figure 5).
MAX3747A/MAX3747B
155Mbps to 3.2Gbps, Low-Power SFP
Limiting Amplifiers
MAX3747A
MAX3747B
VCC
ICC
(SUPPLY
CURRENT)
IOUT
(CML OUTPUT
CURRENT)
50I50I
Figure 1. Power-Supply Current Measurement
6dB
1dB
VIN
TIME
SIGNAL_ON
SIGNAL_OFF
MAXIMUM DEASSERT LEVEL FOR A GIVEN VTH
MINIMUM ASSERT LEVEL FOR A GIVEN VTH
MAXIMUM POWER-DETECT WINDOW
Figure 2A. LOS Deassert Threshold—Set 1dB Below Receiver
Sensitivity
6dB
VIN
TIME
SIGNAL_ON = 1.2VP-P (OVERLOAD)
SIGNAL_OFF
MAXIMUM DEASSERT LEVEL FOR A GIVEN RTH1/RTH2 RATIO
MINIMUM ASSERT LEVEL FOR A GIVEN RTH1/RTH2 RATIO
MAXIMUM POWER-DETECT WINDOW
Figure 2B. LOS Deassert Threshold—Operating at Input
Overload
Typical Operating Characteristics
(VCC= +3.3V, TA= +25°C, unless otherwise noted.)
MAX3747A/MAX3747B
155Mbps to 3.2Gbps, Low-Power SFP
Limiting Amplifiers
OUTPUT EYE DIAGRAM
(MINIMUM INPUT)
MAX3747A/MAX3747B toc01
60mV/div
50ps/div
3.2Gbps, 223 - 1 PRBS, 4mVP-P
OUTPUT EYE DIAGRAM
(MAXIMUM INPUT)
MAX3747A/MAX3747B toc02
60mV/div
50ps/div
3.2Gbps, 223 - 1 PRBS, 1200mVP-P
OUTPUT EYE DIAGRAM
(MINIMUM INPUT)
MAX3747A/MAX3747B toc03
60mV/div
70ps/div
2.7Gbps, 223 - 1 PRBS, 4mVP-P
OUTPUT EYE DIAGRAM
(MAXIMUM INPUT)
MAX3747A/MAX3747B toc04
60mV/div
70ps/div
2.7Gbps, 223 - 1 PRBS, 1200mVP-P
OUTPUT EYE DIAGRAM AT +100°C
MAX3747A/MAX3747B toc05
60mV/div
80ps/div
2.125Gbps, CJTPAT, 50mVP-P
SUPPLY CURRENT vs. TEMPERATURE
(EXCLUDES OUTPUT CURRENT)
MAX3747A/MAX3747B toc06
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
TRANSFER FUNCTION
(OUTPUT VOLTAGE vs. INPUT VOLTAGE)
MAX3747A/MAX3747B toc07
DIFFERENTIAL INPUT (mVP-P)
DIFFERENTIAL OUTPUT (mV
P-P321
MAX3747A/MAX3747B
RANDOM JITTER vs. TEMPERATURE
MAX3747A/MAX3747B toc08
TEMPERATURE (°C)
RANDOM JITTER (ps
RMS
VIN = 50mVP-P, FREQ = 2.7Gbps
RANDOM JITTER vs. INPUT AMPLITUDE
MAX3747A/MAX3747B toc09
DIFFERENTIAL INPUT AMPLITUDE (mVP-P)
RANDOM JITTER (ps
RMS
10001001010,000
3.2Gbps
Typical Operating Characteristics (continued)
(VCC= +3.3V, TA= +25°C, unless otherwise noted.)
MAX3747A/MAX3747B
155Mbps to 3.2Gbps, Low-Power SFP
Limiting Amplifiers
BIT-ERROR RATIO vs. INPUT VOLTAGE
MAX3747A/MAX3747B toc10
DIFFERENTIAL INPUT AMPLITUDE (mVP-P)
BIT-ERROR RATIO (10
10,000
11,000
12,000
13,000
MAXIM
MAX3747A/MAX3747B
MICREL
SY88993V
DETERMINISTIC JITTER
vs. INPUT AMPLITUDE
MAX3747A/MAX3747B toc11
DIFFERENTIAL INPUT AMPLITUDE (mVP-P)
DETERMINISTIC JITTER (ps
P-P
10001001010,000
3.2Gbps, K28.5 PATTERN
DETERMINISTIC JITTER
vs. TEMPERATURE
MAX3747A/MAX3747B toc12
TEMPERATURE (°C)
DETERMINISTIC JITTER (ps)
FREQ = 3.2Gbps
PATTERN = K28.5
VIN = 500mVP-P
VIN = 5mVP-P
LOS ASSERT/DEASSERT TIMES vs. INPUT
AMPLITUDE (LOW RTH1/RTH2 SETTINGS)
MAX3747A/MAX3747B toc13
INPUT AMPLITUDE (mVP-P)
LOS ASSERT/DEASSERT TIME (
MAX3747B
LOS ASSERT
LOS DEASSERT
LOS ASSERT/DEASSERT TIMES vs. INPUT
AMPLITUDE (HIGH RTH1/RTH2 SETTINGS)
MAX3747A/MAX3747B toc14
INPUT AMPLITUDE (mVP-P)
LOS ASSERT/DEASSERT TIME (
MAX3747B
LOS ASSERT
LOS DEASSERT
ASSERT/DEASSERT vs. VTH
MAX3747A/MAX3747B toc15
VTH (V)
ASSERT/DEASSERT (mV
P-P
VTH (V) = VOLTAGE AT PIN 5 (V)
WITH RESPECT TO VCC
DEASSERT
ASSERT
ASSERT/DEASSERT vs. TEMPERATURE
MAX3747A/MAX3747B toc16
TEMPERATURE (°C)
ASSERT/DEASSERT (mV)
VTH = -1.1V, FREQ = 2.7Gbps
PATTERN = PRBS 223 - 1
ASSERT
DEASSERT
OUTPUT RETURN vs. FREQUENCY (SDD22)
(INPUT SIGNAL LEVEL = -60dBm)
MAX3747A/MAX3747B toc17
FREQUENCY (MHz)
SDD22 (dB)
10010,000
INPUT RETURN vs. FREQUENCY (SDD11)
(INPUT SIGNAL LEVEL = -60dBm)
MAX3747A/MAX3747B toc18
FREQUENCY (MHz)
SDD11 (dB)
10010,000

Partno	Mfg	Dc	Qty	Available	Descript
MAX3747AEUB+T \|MAX3747AEUBT	MAXIM	N/a	15000	avai	155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifier
MAX3747AEUB+T	MAX	N/a	8965	avai	155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifier
MAX3747EUB+	N/A	N/a	2500	avai	155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifier