MAX3643ETG+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX3643ETG+T ,155Mbps to 2.5Gbps Burst-Mode Laser DriverApplicationsPin Configuration appears at end of data sheet.A/B/G/XGPON ONT Modules Up to 2.5Gbps1.2 ..
MAX3645EEE ,+2.97 to +5.5 V, 125 Mbps to 200 Mbps limiting amplifier with loss-of-signal detectorApplicationsSONET 155Mbps TransceiversTOP VIEWFast Ethernet ReceiversCAZ21 16 THFDDI 125Mbps Receiv ..
MAX3645EEE+ ,+2.97V to +5.5V, 125Mbps to 200Mbps Limiting Amplifier with Loss-of-Signal DetectorELECTRICAL CHARACTERISTICS(V = +2.97V to +5.5V, PECL outputs are terminated with 50Ω to V - 2V, R = ..
MAX3645EEE+T ,+2.97V to +5.5V, 125Mbps to 200Mbps Limiting Amplifier with Loss-of-Signal Detectorfeatures an integrated power detector♦ Output Disable Function and Automatic Squelchwith complement ..
MAX3645ESE ,+2.97 to +5.5 V, 125 Mbps to 200 Mbps limiting amplifier with loss-of-signal detectorELECTRICAL CHARACTERISTICS(V = +2.97V to +5.5V, PECL outputs are terminated with 50Ω to V - 2V, R = ..
MAX3645ESE+T ,+2.97V to +5.5V, 125Mbps to 200Mbps Limiting Amplifier with Loss-of-Signal DetectorApplications+Denotes lead-free package.SONET 155Mbps Transceivers Pin ConfigurationFast Ethernet Re ..
MAX7300ATL , 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander
MAX7300ATL , 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander
MAX7300ATL+ ,2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O ExpanderElectrical Characteristics(Typical Operating Circuit, V = 2.5V to 5.5V, T = T to T , unless otherwi ..
MAX7300ATL+T ,2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O ExpanderFeaturesThe MAX7300 compact, serial-interfaced, I/O expansion ● 400kbps I2C-Compatible Serial Inter ..
MAX7301AAI+ ,4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O ExpanderMAX7301 4-Wire-Interfaced, 2.5V to 5.5V,20-Port and 28-Port I/O Expander
MAX7301AAI+T ,4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O ExpanderGeneral Description Beneits and

MAX3643ETG+T
155Mbps to 2.5Gbps Burst-Mode Laser Driver
General Description
The MAX3643 burst-modelaser driver provides bias and
modulation current drive for PON burst-mode ONT appli-
cations. It is specifically designed for use with a low-cost
external controller for the APC (and if desired, AMC) loop.
A high-speed differential burst-enable input enables the
driver to switch the laser from a dark (output off) condition
to full on-condition in less than 2ns. When BEN is inac-
tive, typical modulation and bias currents are 5µA each.
Laser modulation current can be set from 10mA to
85mA and bias current can be set from 1mA to 70mA
using the MODSET and BIASSET inputs. A sample-and-
hold circuit is provided to capture the monitor diode
output during short PON bursts, if needed, and the BEN
high-speed signal is mirrored on an LVCMOS output to
be used by the controller operating the APC/AMC loop.
The MAX3643 burst-mode laser driver is packaged in a
4mm x 4mm, 24-pin thin QFN package. It operates from
-40°C to +85°C.
Applications
A/B/G/XGPON ONT Modules Up to 2.5Gbps
1.25Gbps IEEE EPON ONT Modules
Features10mA to 85mA Modulation Current1mA to 70mA Bias CurrentMonitor Diode Sample and Hold45ps Output Transition Time2ns Turn-On/-Off TimeReference Voltage GeneratorLVPECL High-Speed Inputs (Data, Burst Enable)
155Mbps to 2.5Gbps Burst-Mode Laser Driver
MAX3643
EVALUATION KIT AVAILABLE
Ordering Information
OUT-
BMDMON1
VCC
FILTER+3.3V
3.3V
10nH
75Ω1kΩ
BENOUTBIASSETMODSETVBSET
+3.3V
3.3V
VMSET
3kΩ
IMAX
1kΩ
BCMON
1kΩ
IN-
IN+SERIAL
DATA
SOURCEGNDVREF
BEN
BIAS
MOD
130Ω130Ω
15Ω
82Ω82Ω
Z0 = 50Ω
Z0 = 50Ω
3.3V
BEN-
BEN+BURST
CONTROL
130Ω130Ω
82Ω82Ω
Z0 = 50Ω
Z0 = 50Ω
MAX3643
PON TRIPLEXER AND SFP
CONTROLLER
DS1875
15Ω
OUT+
5.6Ω
BIAS+
5.6Ω
BIAS-
10Ω
MDOUT
MDIN
27pF
10pF
Typical Application Circuit
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed paddle.
Pin Configuration appears at end of data sheet.
PARTTEMP RANGEPIN-PACKAGE
MAX3643ETG-40°C to +85°C24 TQFN-EP*
MAX3643ETG+-40°C to +85°C24 TQFN-EP*
155Mbps to 2.5Gbps Burst-Mode Laser Driver
MAX3643
ABSOLUTE MAXIMUM RATINGS
OPERATING CONDITIONS
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.
Supply Voltage VCC ..............................................-0.5V to +4.0V
Current into BIAS-, BIAS+, OUT-, OUT+ .......-20mA to +150mA
Voltage at VMSET, VBSET, IN+, IN-, BEN+, BEN-, EN, MDIN,
MDOUT, BENOUT, BCMON ...................-0.5V to (VCC+ 0.5V)
Voltage at MODSET, BIASSET, VREF, IMAX ........-0.5V to +3.0V
Voltage at OUT-, OUT+, BIAS-, BIAS+.....+0.3V to (VCC+ 0.5V)
Continuous Power Dissipation (TA= +85°C)
24-Pin TQFN, Multilayer Board
(derate 27.8mW/°C above +85°C)............................1807mW
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range ............................-55°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Soldering Temperature (reflow)
Lead(Pb)-free..............................................................+260°C
Containing lead(Pb)....................................................+240°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Turn-On Time 10% to 90% 0.001 1000 ms
Ambient Temperature -40 +85 °C
Data Rate 2500 Mbps
Voltage at VMSET, VBSET 0 1.4 V
Voltage at BCMON 0 1.4 V
Voltage at MDIN 0 2.56 V
ELECTRICAL CHARACTERISTICS
(VCC= 3.0V to 3.6V, TA = -40°C to +85°C. Typical values are at VCC= 3.3V, TA= +25°C, IBIAS= 20mA, IMOD= 30mA, unless other-
wise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Current ICCExcluding laser bias and mode currents,
max at IMOD = 85mA, IBIAS = 70mA 32 51 mA
I/O SPECIFICATIONS
LVPECL Differential Input VIN VIN = (VIN+) - (VIN-) 200 1600 mVP-P
LVPECL Common-Mode Input
Voltage VCMVCC -
1.49
VCC -
1.32
VCC -
VIN/ 4 V
LVCMOS Output High Voltage IOH = -100μA VCC -
0.2 V
LVCMOS Output Low Voltage IOL = 100μA 0.2 V
BENOUT Propagation Delay TdCL = 20pF, from BEN zero crossing to 67%
CMOS level 30 ns
LVCMOS Input Pullup 75 k
LVCMOS Input Current VIN = 0V or VIN = VCC 50 μA
LVCMOS Input High Voltage 2.0 VCC V
LVCMOS Input Low Voltage 0.2 0.8 V
BIAS GENERATOR SPECIFICATIONS
Bias Current Range IBIAS VBIAS+, VBIAS- 0.6V 1 70 mA
Bias Current, Burst Off IBIAS, OFF BEN = low or EN = high 5 50 μA
1mA IBIAS< 2mA, VBSET = VREF 88
2mA IBIAS< 10mA, VBSET = VREF 70 88 110 BIASSET Current Gain GBIAS
mA/mA
155Mbps to 2.5Gbps Burst-Mode Laser Driver
MAX3643
ELECTRICAL CHARACTERISTICS (continued)
(VCC= 3.0V to 3.6V, TA = -40°C to +85°C. Typical values are at VCC= 3.3V, TA= +25°C, IBIAS= 20mA, IMOD= 30mA, unless other-
wise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
BIASSET Current Gain Stability 5mA IBIAS 70mA (Note 13) -4.4 +4.4 %
BIASSET Current Gain Linearity 5mA IBIAS 70mA (Note 14) -3.75 +3.75 %
Bias Current Overshoot VCC turn-on/-off < 1s 10 %
Bias Current Monitor Gain GBSM 2mA IBIAS 70mA, VBSET = VREF 11 14 17 mA/A
1mA IBIAS < 5mA ±4 Bias Current Monitor Gain
Stability 5mA IBIAS 70mA -5 +5
BIASSET Resistor RBIAS 40 50 60
MODULATOR SPECIFICATIONS
Modulation Current Range IMOD 10 85 mA
Modulation Current Off IMOD, OFF BEN = low or EN = high or VIN = low 5 120 μA
10mA IMOD < 60mA 0.6 Instantaneous Voltage at OUT+ 60mA IMOD 85mA 0.75 V
MODSET Current Gain GMOD 10mA < IMOD < 85mA, VMSET = VREF 82.5 88 94.5 mA/mA
MODSET Current Gain Stability (Note 13) -4.4 +4.4 %
MODSET Current Gain Linearity (Note 14) -2.2 +2.2 %
IBIASSET = 0.15mA, IMODSET = 0.7mA 0.5
IMODSET = IBIASSET = 0.15mA 1.7
IMODSET = IBIASSET = 0.4mA 1
MODSET, BIASSET Gain
Matching (Note 15)
IMODSET = IBIASSET = 0.55mA 1
Modulation Current Rise Time tR 20% to 80% 45 85 ps
Modulation Current Fall Time tF 20% to 80% 45 85 ps
Deterministic Jitter (Note 3) 17 45 psP-P
Random Jitter (Note 4) 0.8 1.4 psRMS
MODSET Resistor RMOD 40 50 60
MODSET, BIASSET OPERATIONAL AMPLIFIER SPECIFICATIONS
MODSET, BIASSET Voltage
Range 0.005 1.4 V
Voltage Error (Note 5) ±5 mV
Input Leakage VMSET and VBSET pins 0.1 1.5 μA
TURN-OFF/-ON SPECIFICATIONS
Burst-Enable Time (Notes 2, 6, 7) 2.3 ns
Burst-Disable Time (Notes 2, 6, 8) 2.0 ns
SAMPLE/HOLD SPECIFICATIONS
MDIN Voltage Range 0.05 2.56 V
MDOUT Settling Relative to final value at 3μs, CL < 20pF ±1 mV
Sample/Hold Droop After 100μs (Note 9) ±2.56 mV
VCC turn-on/-off < 1s, IBIAS 20mA 10 % Bias Current Overshoot IBIAS <20mA 2 mA
155Mbps to 2.5Gbps Burst-Mode Laser Driver
MAX3643
Note 1:Electrical specifications are production tested at TA= +25°C. Specifications over the entire operating temperature range
are guaranteed by design and characterization. Typical specifications are at TA= +25°C, 3.3V.
Note 2:For 10mA ≤IMOD≤85mA and 4mA ≤IBIAS≤70mA.
Note 3:Deterministic jitter measured with a continuous pattern of 27-1 PRBS, 80 ones, 27-1 PRBS, 80 zeros at 1.25Gbps, and both
LVPECL inputs terminated by the network shown in Figure 3.
Note 4:Random jitter, rise time, fall time measured with 0000011111 pattern at 1.25Gbps.
Note 5:Voltage difference between VMSET and MODSET or VBSET and BIASSET excluding IR drops. The maximum operating
voltage at VMSET or VBSET must be less than 1.4V for proper operation.
Note 6:Turn-on/-off time is when the BEN+/BEN- LVPECL inputs are used to control modulation and bias currents.
Note 7:Burst-enable delay is measured between the time at which the rising edge of the differential burst-enable input reaches the
midpoint, and the time at which the combined output currents (bias plus modulation) reach 90% of their final level.
Note 8:Burst-disable delay is measured between the time at which the falling edge of the differential burst-enable input reaches the
midpoint, and the time at which the combined output currents (bias plus modulation) fall below 10% of the bias-on current.
Note 9:Droop measured with sample/hold output load of 10MΩ.
Note 10:Enable delay is measured between the time at which the falling edge of the ENinput reaches ≤0.8V, and the time at which
the combined output currents (bias plus modulation) reach 90% of their final level.
Note 11:Disable delay is measured between the time at which the rising edge of the ENinput reaches ≥2V, and the time at which
the combined output currents (bias plus modulation) fall below 10% of the bias-on current.
Note 12:Excelight SLT2886-LR laser.
Note 13:Current gain stability = [(Gain – nominal Gain) / nominal Gain], nominal Gain at VCC= 3.3V, TA= +25°C.
Note 14:Gain linearity = (Gainmax – Gainmin), Gainavg = Gainmax + Gainmin
Gainavg 2
Note 15:Gain matching = , nominal at VCC= 3.3V, TA= +25°C. mod / mod /
mod / GainGainbiasGainnomGainbiasnom
GainnomGainbiasnom
ELECTRICAL CHARACTERISTICS (continued)
(VCC= 3.0V to 3.6V, TA = -40°C to +85°C. Typical values are at VCC= 3.3V, TA= +25°C, IBIAS= 20mA, IMOD= 30mA, unless other-
wise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Sampling Error Final value measured after 10μs
(MDOUT - MDIN), burst width > 576ns 3 ±14 mV
BANDGAP VOLTAGE REFERENCE SPECIFICATIONS
VREF Output RL > 10k, CL < 50pF 1.175 1.235 1.295 V
MODULATION/BIAS CURRENT DISABLE
Enable Time 5mA < IBIAS, 10mA < IMOD (Note 10) 5.5 μs
Disable Time (Notes 2, 11) 375 ns
RIMAX Range 3 15 k
RIMAX = 3k155
RIMAX = 5k100 150 Current Limit (Tested with IBIAS
= IMOD)IBIAS+IMOD
RIMAX = 10k50 75
mA
OPTICAL EVALUATION
155.52Mbps 49
622.08Mbps 45
1.24416Gbps 38Eye Margin (Note 12)
2.48832Gbps 18
155Mbps to 2.5Gbps Burst-Mode Laser Driver
OPTICAL EYE DIAGRAM
(155.52Mbps, 117MHz FILTER,
PATTERN = 223 - 1 PRBS)
MAX3643 toc01
EXCELIGHT SLT2886-LR LASER
AVERAGE OPTICAL POWER = -6dBm
EXTINCTION RATIO = 15dB
MASK MARGIN = 49%
OPTICAL EYE DIAGRAM
(622.08Mbps, 467MHz FILTER,
PATTERN = 223 - 1 PRBS)
MAX3643 toc02
EXCELIGHT SLT2886-LR LASER
AVERAGE OPTICAL POWER = -6dBm
EXTINCTION RATIO = 15dB
MASK MARGIN = 45%
OPTICAL EYE DIAGRAM
(1.24416Gbps, 933MHz FILTER,
PATTERN = 223 - 1 PRBS)
MAX3643 toc03
EXCELIGHT SLT2886-LR LASER
AVERAGE OPTICAL POWER = -6dBm
EXTINCTION RATIO = 14dB
MASK MARGIN = 38%
OPTICAL EYE DIAGRAM
(2.48832Gbps, 2.3GHz FILTER,
PATTERN = 223 - 1 PRBS)
MAX3643 toc04
EXCELIGHT SLT2886-LR LASER
AVERAGE OPTICAL POWER = -6dBm
EXTINCTION RATIO = 10dB
MASK MARGIN = 18%
ELECTRICAL EYE DIAGRAM
(2.5Gbps, IMOD = 30mA,
PATTERN = PRBS 27 - 1 + 80 CID)
MAX3643 toc05
100ps/div
MAX3643
Typical Operating Characteristics
(Typical values are at VCC= 3.3V, TA= +25°C, data pattern = 27-1 PRBS + 80 ones + 27-1 PRBS + 80 zeros, unless otherwise
noted.)
SUPPLY CURRENT vs. TEMPERATURE
(IBIAS = 20mA, IMOD = 30mA)
MAX3643 toc06
TEMPERATURE (°C)
ICC
(mA)6020400-20
EXCLUDES BIAS AND
MODULATION CURRENT
155Mbps to 2.5Gbps Burst-Mode Laser Driver
DETERMINISTIC JITTER
vs. MODULATION AMPLITUDE
MAX3643 toc07
IMOD (mA)
DJ (ps
P-P705060304020
RANDOM JITTER
vs. MODULATION AMPLITUDE
MAX3643 toc08
IMOD (mA)
RANDOM JITTER (ps
RMS705060304020
IMOD vs. IMODSET
MAX3643 toc09
IMODSET (μA)
IMOD
(mA)
IBIAS vs. IBIASSET
MAX3643 toc10
IBIASSET (μA)
IBIAS
(mA)
BIAS CURRENT MONITOR GAIN
(IBCMON/IBIAS) vs. TEMPERATURE
MAX3643 toc11
TEMPERATURE (°C)
GAIN (mA/A)6040200-20
IMOD vs. VMSET
(RMODSET = 1kΩ)
MAX3643 toc12
VMSET (V)
IMOD
(mA
P-P
MAX3643
Typical Operating Characteristics (continued)
(Typical values are at VCC= 3.3V, TA= +25°C, data pattern = 27-1 PRBS + 80 ones + 27-1 PRBS + 80 zeros, unless otherwise
noted.)
155Mbps to 2.5Gbps Burst-Mode Laser Driver
MAX3643ypical Operating Characteristics (continued)
(Typical values are at VCC= 3.3V, TA= +25°C, data pattern = 27-1 PRBS + 80 ones + 27-1 PRBS + 80 zeros, unless otherwise
noted.)
IBIAS vs. VBSET
(RBIASSET = 1kΩ)
MAX3643 toc13
VBSET (V)
IBIAS
(mA)
TIMING DIAGRAM, BURST-ON
(933MHz FILTER ON OUT+)
MAX3643 toc15
500ps/div
VOUT+
VBIAS+
VBEN+
IBIAS + IMOD CURRENT
THRESHOLD vs. RIMAX
MAX3643 toc14
RIMAX (kΩ)
CURRENT THRESHOLD (mA)2051015
TIMING DIAGRAM, BURST-OFF
(933MHz FILTER ON OUT+)
MAX3643 toc16
500ps/div
VOUT+
VBIAS+
VBEN+
SAMPLE/HOLD
(10MΩ LOAD, 2.8μs SAMPLE
AND 100μs HOLD, MDIN = 1.56V)
MAX3643 toc17
20μs/div
MDOUT
1.56V
1.22V
BEN+
155Mbps to 2.5Gbps Burst-Mode Laser Driver
MAX3643
Pin Description
PINNAMEFUNCTION
1 VCCA Analog Supply Voltage IN+ Noninverted Data Input, LVPECL Compatible IN- Inverted Data Input, LVPECL Compatible
4 VCCS Signal Supply Voltage BEN+ Noninverted Burst-Enable Input, LVPECL Compatible BEN- Inverted Burst-Enable Input, LVPECL Compatible BENOUT Burst-Enable Output, LVCMOS. Signal replicates BEN input. EN Enable Input LVCMOS. Active low enables BIAS± and OUT± outputs.
9 BCMON Bias Current Monitor. Current out of this pin develops a ground-referenced voltage across an
external resistor proportional to the bias current.
10 IMAX Current-Limit Reference. Connect a resistor from IMAX to GND to set maximum IBIAS plus IMOD.
11 MDOUT Monitor Diode Out. Analog Output for sample/hold.
12 MDIN Monitor Diode In. Analog Input for sample/hold.
13 BIAS- Connect BIAS- to VCC Through a 10 Resistor and Switching Diode
14 BIAS+ Laser Bias Current Output. Modulation current flows into this pin when BEN input is high.
15, 18 VCCO Output Supply Voltage
16 OUT+ Laser Modulation Current Output. Modulation current flows into this pin when both BEN and IN
inputs are high.
17 OUT- Connect OUT- to Laser Diode Anode Through a 15 Resistor and Switching Diode
19 GND Supply Ground. This pin must be connected to ground.
20 MODSET Modulation Current Set. Current from this pin to ground sets the laser modulation current.
21 VMSET MODSET Reference. A ground-referenced voltage at this point establishes the MODSET reference.
22 VREF Reference Voltage Output. May be used for VMSET, VBSET.
23 VBSET BIASSET Reference. A ground-referenced voltage at this point establishes the BIASSET reference.
24 BIASSET Bias Current Set. Current from this pin to ground sets the laser bias current.
— EP Exposed Paddle (Ground). The exposed pad must be soldered to the circuit board ground for proper
thermal and electrical operation.

Partno	Mfg	Dc	Qty	Available	Descript
MAX3643ETG+T \|MAX3643ETGT	MAXIM	N/a	5000	avai	155Mbps to 2.5Gbps Burst-Mode Laser Driver