MAX3657ETC+ Fast Delivery |IC PHOENIX CO.,LIMITED

MAX3657ETC+ ,155Mbps Low-Noise Transimpedance AmplifierApplications+25°C.Optical Receivers (Up to 155Mbps Operation)Passive Optical Networks (PONs)Pin Con ..
MAX365CPE ,Precision, Quad, SPST Analog SwitchesGeneral Description ________
MAX365CPE+ ,Precision, Quad, SPST Analog SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = 15V, V- = -15V, VL = 5V, GND = 0V, V = 2.4V, V = 0.8V ..
MAX365CSE ,Precision, Quad, SPST Analog SwitchesGeneral Description ________
MAX365CSE+ ,Precision, Quad, SPST Analog SwitchesGeneral Description ________
MAX365EPE ,Precision, Quad, SPST Analog SwitchesFeaturesThe MAX364/MAX365 are precision, quad, single-pole ' Low On Resistance: < 45Ω Typical (85Ω ..
MAX7310AEE ,2-Wire-Interfaced 8-Bit I/O Port Expander with ResetELECTRICAL CHARACTERISTICS(V+ = 2.3V to 5.5V, GND = 0, RESET = V+, T = -40°C to +125°C, unless othe ..
MAX7310ATE ,2-Wire-Interfaced 8-Bit I/O Port Expander with ResetMAX731019-2698; Rev 3; 2/052-Wire-Interfaced 8-Bit I/O Port Expanderwith Reset
MAX7310ATE+ ,2-Wire-Interfaced 8-Bit I/O Port Expander with ResetELECTRICAL CHARACTERISTICS(V+ = 2.3V to 5.5V, GND = 0, RESET = V+, T = -40°C to +125°C, unless othe ..
MAX7310ATE+T ,2-Wire-Interfaced 8-Bit I/O Port Expander with ResetApplicationsOrdering InformationServersRAID SystemsPIN- PKGPART TEMP RANGEIndustrial ControlPACKAGE ..
MAX7310ATE-T ,2-Wire-Interfaced 8-Bit I/O Port Expander with ResetFeaturesThe MAX7310 provides 8-bit parallel input/output port♦ 400kHz 2-Wire Interface2expansion fo ..
MAX7310AUE ,2-Wire-Interfaced 8-Bit I/O Port Expander with ResetApplicationsOrdering InformationServersRAID SystemsPIN- PKGPART TEMP RANGEIndustrial ControlPACKAGE ..

MAX3657ETC+
155Mbps Low-Noise Transimpedance Amplifier
General Description
The MAX3657 is a transimpedance preamplifier for
receivers operating up to 155Mbps. The low noise, high
gain, and low-power dissipation make it ideal for Class-B
and Class-C passive optical networks (PONs).
The circuit features 14nA input-referred noise, 130MHz
bandwidth, and 2mA input overload. Low jitter is
achieved without external compensation capacitors.
Operating from a +3.3V supply, the MAX3657 con-
sumes only 76mW power. An integrated filter resistor
provides positive bias for the photodiode. These fea-
tures, combined with a small die size, allow easy
assembly into a TO-46 header with a photodiode. The
MAX3657 includes an average photocurrent monitor.
The MAX3657 has a typical optical sensitivity of -38dBm
(0.9A/W), which exceeds the Class-C PON require-
ments. Typical overload is 0dBm. The MAX3657 is avail-
able in die form with both output polarities (MAX3657E/D
and MAX3657BE/D.) The MAX3657 is also available in a
12-pin, 3mm x 3mm thin QFN package.
Applications
Optical Receivers (Up to 155Mbps Operation)
Passive Optical Networks (PONs)
SFP/SFF Transceivers
BiDi Transceivers
Features14nARMSInput-Referred Noise54kΩTransimpedance Gain130MHz (typ) Bandwidth2mAP-PInput Current—0dBm Overload Capability76mW (typ) Power Dissipation3.3V Single-Supply OperationAverage Photocurrent Monitor
MAX3657
155Mbps Low-Noise Transimpedance
Amplifier
Ordering Information
19-2834; Rev 3; 11/05
*Dice are designed to operate over a -40°C to +110°C junction
temperature (TJ) range, but are tested and guaranteed at TA=
+25°C.
Pin Configuration appears at end of data sheet.
PARTTEMP RANGEPIN-PACKAGE
MAX3657ETC-40°C to +85°C12 Thin QFN
MAX3657E/D-40°C to +85°CDie*
MAX3657BE/D-40°C to +85°CDie*
Typical Application Circuit
FILT
GND
1μF
1μF
TO-46 HEADER
*OPTIONAL COMPONENT
OUT+
OUT-
MON
VCCZ
RFILT
CFILT
3.3V
COUTRLOAD
200Ω
RMON*
LIMITING AMPLIFIER
MAX3964
MAX3657
VCC
CVCC1
CVCC2
MAX3657
155Mbps Low-Noise Transimpedance
Amplifier
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC1= +2.97V to +3.63V, 200Ωload between OUT+ and OUT-, TA= -40°C to +85°C. Typical values are at VCC= +3.3V, TA= +25°C,
unless otherwise noted.) (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...........................................-0.5V to +6.0V
Input Continuous Current................................................±3.5mA
Voltage at OUT+, OUT-...................(VCC- 1.5V) to (VCC+ 0.5V)
Voltage at FILT, MON.................................-0.5V to (VCC + 0.5V)
Continuous Power Dissipation
12-Pin TQFN (derate 14.7mW/°C above +70°C).......1176mW
Operating Temperature Range
12-Pin TQFN....................................................-40°C to +85°C
Operating Junction Temperature Range
Die.................................................................-40°C to +150°C
Storage Temperature Range.............................-55°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Die Attach Temperature...................................................+400°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply CurrentICC2334mA
Input Bias VoltageVINIIN ≤ 1mA11.3V
Transimpedance Linear Range0.95 < linearity < 1.05, referred to gain at
1µAP-P input2µAP-P
Small-Signal TransimpedanceZ21Differential output, IIN < 200nAP-P445465kΩ
Output Common-Mode VoltageAC-coupled outputsVCC -
0.225V
Output Resistance (Per Side)ROUTSingle-ended output resistance82100118Ω
Maximum Differential Output VoltageVOUT(max)IIN = 2mAP-P, VOUT = (VOUT+) - (VOUT-)170250450mVP-P
Filter ResistorRFILT640800960Ω
DC Input Overload11.5mA
Monitor Nominal GainGNOMVCC = +3.3V, +25°C (Note 2)0.811.2A/A
IIN = 100µA to 1mA-1.5+1.5
Die-1.5+2.2IIN = 5µATQFN package-3.0+2.7
IIN = 2µADie only-4.0+3.4
Monitor Gain Stability
(Note 3)ΔG
IIN = 1µADie only±2.0
AC ELECTRICAL CHARACTERISTICS
(VCC= +2.97V to +3.63V, 200Ωload between OUT+ and OUT-, CIN= 0.5pF, CFILT= 400pF, CVCC2= 680pF, TA= -40°C to +85°C.
Typical values are at VCC= +3.3V, TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Small-Signal BandwidthBW-3dBRelative to gain at 1MHz110MHz
Low-Frequency Cutoff-3dB, IIN = 1µA525kHz
AC Overload2mAP-P
Pulse-Width DistortionPWD300nAP-P ≤ IIN ≤ 2mAP-P22psP-P
f = 100MHz (Note 4)15Input-Referred Noise CurrentInf = 117MHz14nARMS
RMS Noise Densityf = 100MHz1.3pA/√Hz
MAX3657
155Mbps Low-Noise Transimpedance
Amplifier
Note 1:Die parameters are production tested at room temperature only, but are guaranteed by design from TA= -40°C to +85°C.
AC characteristics guaranteed by design and characterization.
Note 2:GNOM = IMON(1mA) / 1mA.
Note 3:Stability is relative to the nominal gain at VCC = +3.3V, TA= +25°C. ΔG(IIN) dB = 10 log10 [ IMON(IIN) ] / [ IMON(1mA) - GNOM
x (1mA - IIN)], VMON ≤2.1V, Input tr, tf > 550ps (20% to 80%).
Note 4:Total noise integrated from 0 to f.
AC ELECTRICAL CHARACTERISTICS (12-PIN TQFN)
(VCC= +2.97V to +3.63V, RLOAD= 200Ω, CIN= 1.0pF, CFILT= 1000pF, CVCC2= 0.01µF, TA= -40°C to +85°C. Typical values are at
VCC= +3.3V, TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Small-Signal BandwidthBW-3dBRelative to gain at 1MHz95MHz
Low-Frequency Cutoff-3dB, IIN = 1µA525kHz
AC Overloadεr ≥ 101.6mA
Pulse-Width DistortionPWD1µAP-P ≤ IIN ≤ 2mAP-P22psP-P
f = 50MHz (Note 4)5Input-Referred Noise CurrentInf = 100MHz13nARMS
RMS Noise Densityf = 100MHz1.3pA/√Hz
Typical Operating Characteristics
(MAX3657E/D. VCC= 3.3V, CIN= 0.5pF, TA = +25°C, unless otherwise noted.)
SMALL-SIGNAL TRANSIMPEDANCE
vs. TEMPERATURE
MAX3657 toc01
AMBIENT TEMPERATURE (°C)
TRANSIMPEDANCE GAIN (k
0.2μAP-P
1.0μAP-P
SUPPLY CURRENT
vs. TEMPERATURE
MAX3657 toc02
AMBIENT TEMPERATURE (°C)
SUPPLY CURRENT (mA)
INPUT BIAS VOLTAGE
vs. TEMPERATURE
MAX3657 toc03
AMBIENT TEMPERATURE (°C)
INPUT BIAS VOLTAGE (V)
OUTPUT EYE DIAGRAM
(1.0μA ELECTRICAL INPUT)
MAX3657 toc10
1ns/div
50mV
-50mV
10mV
OUTPUT EYE DIAGRAM
(100μA ELECTRICAL INPUT)
MAX3657 toc11
1ns/div
200mV
-200mV
40mV
OUTPUT EYE DIAGRAM
(1mA ELECTRICAL INPUT)
MAX3657 toc12
1ns/div
200mV
-200mV
40mV
MAX3657
155Mbps Low-Noise Transimpedance
Amplifier
Typical Operating Characteristics (continued)
(MAX3657E/D. VCC= 3.3V, CIN= 0.5pF, TA = +25°C, unless otherwise noted.)
0.1110100100010,000
PULSE-WIDTH DISTORTION
vs. INPUT CURRENT AMPLITUDE
MAX3657 toc04
INPUT SIGNAL AMPLITUDE (μA)
PULSE-WIDTH DISTORTION (ps)
+85°C
+25°C
-40°C
DIFFERENTIAL OUTPUT VOLTAGE
vs. INPUT CURRENT
MAX3657 toc05
INPUT CURRENT (μA)
OUTPUT VOLTAGE (mV
P-P
VFILT = GND
RLOAD = OPEN
Z21 = 108kΩ
RLOAD = 200Ω
Z21 = 54kΩ
RLOAD = 100Ω
Z21 = 36kΩ
FREQUENCY RESPONSE
FREQUENCY (Hz)
OUTPUT MAGNITUDE
(dB
1001M100M10k1k100k10M1G
MAX3657 toc06
DIFFERENTIAL OUTPUT
SINGLE-ENDED OUTPUT
BANDWIDTH vs. CAPACITANCE
MAX3657 toc07
CAPACITANCE (pF)
BANDWIDTH (MHz)
TJ = +110°C
TJ = +25°C
TJ = -40°C
INPUT-REFERRED RMS NOISE
vs. CAPACITANCE
MAX3657 toc08
CAPACITANCE (pF)
INPUT-REFERRED NOISE (nA
RMS
TJ = -40°CTJ = +25°CTJ = +110°C
0.1110100100010,000
INPUT-REFERRED RMS NOISE
vs. DC INPUT CURRENT
MAX3657 toc09
DC CURRENT IN (μA)
INPUT-REFERRED NOISE (nA
RMS1.0
TJ = +110°C
TJ = +25°C
TJ = -40°C
MAX3657
OUTPUT EYE DIAGRAM
(-30dBm OPTICAL INPUT)
MAX3657toc13
1ns/div
6mV/div
ZARLINK 1A358 PHOTODIODE + MAX3657
223-1 PRBS
OUTPUT EYE DIAGRAM
(-1dBm OPTICAL INPUT)
MAX3657toc14
1ns/div
20mV/div
ZARLINK 1A358 PHOTODIODE + MAX3657
223-1 PRBS
155Mbps Low-Noise Transimpedance
Amplifier
INPUT IMPEDANCE vs. FREQUENCY
FREQUENCY (Hz)
MAGNITUDE OF INPUT IMPEDANCE
1001M100M10k1k100k10M1G
MAX3657 toc15
TJ = +25°CTJ = -40°C
TJ = +110°C
SMALL SIGNAL
Typical Operating Characteristics (continued)
(MAX3657E/D. VCC= 3.3V, CIN= 0.5pF, TA = +25°C, unless otherwise noted.)
PINNAMEFUNCTION
1, 9, 11N.C.No Connection. Do not connect.GNDNegative Supply Voltage. Both GND and GNDZ must be connected to ground.GNDZNegative Supply Voltage. Both GND and GNDZ must be connected to ground.MONPhotocurrent Monitor. This is a current output. Connect a resistor between MON and ground to monitor the
average photocurrent.INSignal Input. Connect to photodiode anode.FILT
Filter Connection (Optional). Use to bias the photodiode cathode. An internal 800Ω on-chip resistor is connected
between this pin and VCCZ; an external decoupling capacitor connected to this pin forms a filter (see the Design
Procedure section).VCCZPower-Supply Voltage. Both VCC and VCCZ must be connected to the supply.VCCPower-Supply Voltage. Both VCC and VCCZ must be connected to the supply.OUT+Positive Data Output. This output has 100Ω back termination, increasing input current causes OUT+ to increase.OUT-Negative Data Output. This output has 100Ω back termination, increasing input current causes OUT- to decrease.
Pin Description
MAX3657
155Mbps Low-Noise Transimpedance
Amplifier
Detailed Description
The MAX3657 transimpedance amplifier is designed for
155Mbps fiber-optic applications. The functional dia-
gram of the MAX3657 comprises a transimpedance
amplifier, a voltage amplifier, a DC-cancellation circuit,
and a CML output buffer.
Transimpedance Amplifier
The signal current at the input flows into the summing
node of a high-gain amplifier. Shunt feedback through
resistor RFconverts this current into a voltage. Schottky
diodes clamp the output signal for large input currents
(Figure 1).
Voltage Amplifier
The voltage amplifier provides additional gain and con-
verts the transimpedance amplifier single-ended output
signal into a differential signal.
Output Buffer
The output buffer provides a reverse-terminated volt-
age output and is designed to drive a 200Ωdifferential
load between OUT+ and OUT-. For optimum supply-
noise rejection, the MAX3657 should be terminated with
a differential load. The MAX3657 single-ended outputs
do not drive a DC-coupled grounded load. The outputs
should be AC-coupled or terminated to VCC. If a single-
ended output is required, both the used and the unused
outputs should be terminated in a similar manner.
DC-Cancellation Circuit
The DC-cancellation circuit uses low-frequency feed-
back to remove the DC component of the input signal
(Figure 2). This feature centers the input signal within
the transimpedance amplifier’s linear range, thereby
reducing pulse-width distortion.
The DC-cancellation circuit is internally compensated
and does not require external capacitors. This circuit
minimizes pulse-width distortion for data sequences
that exhibit a 50% mark density. A mark density signifi-
cantly different from 50% causes the MAX3657 to gen-
erate pulse-width distortion. Grounding the FILT pin
disables the DC-cancellation circuit. For normal opera-
tion, the DC-cancellation circuit must be enabled.
The DC-cancellation current is drawn from the input and
creates noise. For low-level signals with little or no DC
component, the added noise is insignificant. However,
amplifier noise increases for signals with significant DC
component (see the Typical Operating Characteristics).
VOLTAGE
AMPLIFIER
OUTPUT
BUFFER
OUT+
ROUT
ROUT
OUT-
VCCZ
MON
LOWPASS
FILTER
ROUT
FILT
DC-CANCELLATION
CIRCUIT
TRANSIMPEDANCE
AMPLIFIER
ENABLE
+1.0V
MAX3657
Functional Diagram
MAX3657
155Mbps Low-Noise Transimpedance
Amplifier
Photocurrent Monitor
The MAX3657 includes an average photocurrent monitor.
The current at MON is approximately equal to the DC cur-
rent at IN. Best monitor accuracy is obtained when data
input edge time is longer than 500ps.
Design Procedure
Select Photodiode
Noise performance and bandwidth are adversely affected
by stray capacitance on the TIA input node. Select a
low-capacitance photodiode to minimize the total input
capacitance on this pin. The MAX3657 is optimized for
0.5pF of capacitance on the input. Assembling the
MAX3657 in die form using chip and wire technology
provides the lowest capacitance input and the best
possible performance.
Select CFILT
Supply voltage noise at the cathode of the photodiode
produces a current I = CPDΔV/Δt, which reduces the
receiver sensitivity (CPDis the photodiode capaci-
tance). The filter resistor of the MAX3657, combined
with an external capacitor, can be used to reduce the
noise (see the Typical Application Circuit). Current gen-
erated by supply-noise voltage is divided between
CFILTand CPD. To obtain a good optical sensitivity,
select CFILT> 400pF.
Select Supply Filter
The MAX3657 requires wideband power-supply decou-
pling. Power-supply bypassing should provide low
impedance between VCCand ground for frequencies
between 10kHz and 200MHz. Use LC filtering at the
main supply terminal and decoupling capacitors as
close to the die as possible.
Select RMON
Connect a resistor between MON and ground to moni-
tor the average photocurrent. Select RMONas large as
possible:
where IMONMAXis the largest average input current
observed.
Select Coupling Capacitors
A receiver built with the MAX3657 has a bandpass fre-
quency response. The low-frequency cutoff due to the
coupling capacitors and load resistors is:
Select CCOUPLEso the low-frequency cutoff due to the
load resistors and coupling capacitors is much lower than
the low-frequency cutoff of the MAX3657. The coupling
capacitor should be 0.1µF or larger, but 1.0µF is recom-
mended for lowest jitter. Refer to Maxim Application Note
HFAN-01.1: Choosing AC-Coupling Capacitorsfor more
information.
Layout Considerations
Figure 3 shows a suggested layout for a TO header for
the MAX3657.
Wire Bonding
For high-current density and reliable operation, the
MAX3657 uses gold metalization. For best results, use
gold-wire ball-bonding techniques. Use caution if
attempting wedge bonding. Die size is 41 mils x 48 mils,
(1040µm x 1220µm) and die thickness is 15 mils (380µm).
The bond pad is 94.4µm x 94.4µm and its metal thickness
is 1.2µm. Refer to Maxim Application Note HFAN- 08.0.1:
LFCxRxCTERM
LOADCOUPLE=1MONMONMAX
2.1V=
Figure 1. MAX3657 Limited Outputs
AMPLITUDE
OUTPUT (LARGE SIGNALS)
TIME
OUTPUT (SMALL SIGNALS)
Figure 2. Effects of DC Cancellation on Input
AMPLITUDEINPUT FROM PHOTODIODE
TIME
INPUT AFTER DC CANCELLATION
MAX3657
155Mbps Low-Noise Transimpedance
Amplifier
OUTPUT POLARITIES
REVERSED FOR MAX3567BE/D.
CASE IS GROUND.
4-PIN TO HEADER
5-PIN TO HEADER
VCC
FILT
VCCZ
GNDZ
GND
OUT-OUT+
VCCMON
CFILT
CVCC
OUT+OUT-
PHOTODIODE
MAX3657E/D
OUTPUT POLARITIES
REVERSED FOR MAX3567BE/D.
CASE IS GROUND.
VCC
GND
FILT
VCCZ
GNDZ
GND
OUT-OUT+
VCCMON
CFILT
CVCC
OUT+OUT-
MON
PHOTODIODE
MAX3657E/D
Figure 3. Suggested TO Header Layout

Partno	Mfg	Dc	Qty	Available	Descript
MAX3657ETC+ \|MAX3657ETC	MAXIM	N/a	200	avai	155Mbps Low-Noise Transimpedance Amplifier