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MAX3261CCJ
  1. Download Maxim Integrated Products Others Driver License Test
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Single +5V, fully integrated, 1.25Gbps laser diode driver.
Maxim Integrated Products

Schematic Symbol of Maxim Integrated Products MAX232CPE+ showing how CAD model looks and operates before user downloads 1 C1+ 2 V+ 3 C1-4 C2+ 5 C2-6 V-7 T2OUT 8 R2IN 9 R2OUT 10 T2IN 11 T1IN 12 R1OUT 13 R1IN 14 T1OUT 15 GND 16 VCC. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! At 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Thank You for interest in Maxim Integrated. Our free samples program limits the quantities that we can provide to each customer per calendar year.If you feel that you have received this message in error, please contact samples-admin@maximintegrated.com. Free software drivers for Windows -based PCs can be downloaded from www.maxim-ic.com/1-Wiredrivers. USB to 1-Wire/iButton Adapters 1-Wire, iButton, and Thermochron are registered trademarks of Maxim Integrated Products, Inc. Windows is a registered trademark of Microsoft Corp.

1.MAX3261CCJ.pdf (12 pages)

Maxim Integrated Executing Well Ahead Of The Analog Devices Deal Feb. 10, 2021 12:11 PM ET Maxim Integrated Products, Inc. (MXIM) ADI TXN 1 Like Stephen Simpson.

TQFP
99+
  • Current page: 1 of 12
The MAX3261 is a complete, easy-to-program, single
+5V-powered, 1.25Gbps laser diode driver with com-
plementary enable inputs and automatic power control
(APC). The MAX3261 accepts differential PECL inputs
and provides complementary output currents. A tem-
perature-stabilized reference voltage is provided to
simplify laser current programming. This allows modu-
lation current to be programmed up to 30mA and bias
current to be programmed up to 60mA with two exter-
Complementary enable inputs allow the MAX3261 to
interface with open-fiber-control architecture—a feature
An APC circuit is provided to maintain constant laser power
in transmitters that use a monitor photodiode. Only two
external components are required to implement the APC
The MAX3261’s fully integrated feature set includes a
TTL-compatible laser failure indicator and a program-
mable slow-start circuit to prevent laser damage. The
slow-start is preset to 50ns and can be extended by
________________________Applications
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
_______________General Description
SLWSTRT
TOP VIEW
VREF2
GNDA
Laser Diode Transmitters
622Mbps SDH/SONET
IPIN
2
4
6
8
________________________________________________________________ Maxim Integrated Products
TQFP
23
21
19
17
IMODSET
IBIASFB
VREF1
ENB+
1.25Gbps Laser Diode Driver
Single +5V, Fully Integrated,
* Dice are designed to operate over a -40°C to +140°C junction
temperature (Tj) range. Tested and guaranteed at Tj = +25°C.
______________Ordering Information
MAX3261ECJ
CONTROL
Differential PECL Inputs
Automatic Power Control
Complementary Enable Inputs
INPUTS
PECL
Windows
+5V
VIN+
GND A
ENB+
SLWSTRT
VREF2
V
MAX3261
-40°C to +85°C
IPINSET
0°C to +70°C
B
FAILOUT
IBIASFB
OUT-
+5V
DIODE
Z
= 25
32 TQFP
Dice*
LASER
+5V

MAX3261CCJ Summary of contents

Page 1

... Differential PECL Inputs Single +5V Supply Automatic Power Control Temperature-Compensated Reference Voltage Complementary Enable Inputs ______________Ordering Information PART MAX3261CCJ MAX3261ECJ MAX3261E/D * Dice are designed to operate over a -40°C to +140°C junction temperature (Tj) range. Tested and guaranteed +25°C. __________Typical Operating Circuit +5V VIN+ ...

Page 2

... SLWSTRT ..............................................................0mA to 5mA CC_ Continuous Power Dissipation (T CC_ TQFP (derate 10.2mW/°C above +70°C)......................816mW ) ...........................3.8V Operating Temperature Ranges MAX3261CCJ ......................................................0°C to +70°C MAX3261ECJ ...................................................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-55°C to +175°C Processing Temperature (die) .........................................+400° unless otherwise noted ...

Page 3

... MODULATION CURRENT (mAp-p) = +25°C, unless otherwise noted.) EYE DIAGRAM (1062Mbps, LOAD = 25 , NOT FILTERED) 250.3mV -250mV 40.14ns 38.13ns 117ps/div MAX3261CCJ EYE DIAGRAM (1062Mbps, LOAD AT OUT- = 1300nm LASER WITH 800MHz BESSEL FILTER)* 513.7mV -66.2mV 40.15ns 37.78ns 117ps/div R vs. MONITOR CURRENT PINSET 1,000,000 ...

Page 4

Single +5V, Fully Integrated, 1.25Gbps Laser Diode Driver ____________________________Typical Operating Characteristics (continued) (MAX3261E/D, LOAD at OUT+ = OUT- = 25Ω, V PERCENT CHANGE IN MODULATION CURRENT vs. TEMPERATURE -10 0 ...

Page 5

Description PIN NAME 1, 2, 25, GNDA Ground for Bias and Modulation Current Drivers 27 IPIN Monitor Photodiode Current Input. Connect IPIN to photodiode’s anode. Slow-Start Capacitor Input. Connect capacitor to ground or leave unconnected to set ...

Page 6

Single +5V, Fully Integrated, 1.25Gbps Laser Diode Driver _______________Detailed Description The MAX3261 laser driver has three main sections: a reference generator with temperature compensation, a laser bias block with automatic power control, and a high-speed modulation driver. The reference generator ...

Page 7

V CC MAX3261 280 280 400 2(I ) 2(I ) IOSADJ IOSADJ INPUT BUFFER Figure 2. MAX3261 Modulation Driver (Simplified) current mirror has a gain of approximately 20. Keep the voltages at OUT+ and OUT- above 2.2V to prevent saturation. ...

Page 8

Single +5V, Fully Integrated, 1.25Gbps Laser Diode Driver the IPIN node will drop below 2.6V. This will trigger the failout comparator, which provides a TTL signal indicat- ing laser failure. The FAILOUT output asserts only if the monitor-diode current is ...

Page 9

PECL SIGNAL SOURCE a) THEVENIN-EQUIVALENT TERMINATION NON-PECL SIGNAL SOURCE b) DIFFERENTIAL NON-PECL TERMINATION NON-PECL SIGNAL SOURCE c) SINGLE-ENDED NON-PECL TERMINATION ECL SIGNAL SOURCE d) ECL TERMINATION THIS SYMBOL REPRESENTS A TRANSMISSION LINE WITH CHARACTERISTIC IMPEDANCE ...

Page 10

Single +5V, Fully Integrated, 1.25Gbps Laser Diode Driver Reducing Power Consumption The laser driver typically consumes 40mA of current for internal functions. Typical load currents, such as 12mA of modulation current and 20mA of bias cur- rent, bring the total ...

Page 11

OUT+ 1000pF MAX3261 PHOTO- DIODE IPIN SERIES R IBIASOUT 200 OUT- O MICROSTRIP Figure 5. Typical Laser Interface with Bias Compensation EYE DIAGRAM WITH R-C AND R-L COMPENSATION (622Mbps, LOAD AT OUT- = ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 12 © ...

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MAX491
Maxim Integrated Products
1.MAX491.pdf (16 pages)
3.MAX491.pdf (16 pages)
SOP-14

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  • Current page: 1 of 16
and MAX1487E are low-power transceivers for RS-485 and
RS-422 communications in harsh environments. Each driver
output and receiver input is protected against ±15kV electro-
static discharge (ESD) shocks, without latchup. These parts
MAX487E, MAX488E, and MAX489E feature reduced slew-
rate drivers that minimize EMI and reduce reflections caused
by improperly terminated cables, thus allowing error-free
data transmission up to 250kbps. The driver slew rates of the
are not limited, allowing them to transmit up to 2.5Mbps.
These transceivers draw as little as 120µA supply current
when unloaded or when fully loaded with disabled drivers
(see Selection Table ). Additionally, the MAX481E,
mode in which they consume only 0.5µA. All parts operate
Drivers are short-circuit current limited, and are protected
against excessive power dissipation by thermal shutdown
circuitry that places their outputs into a high-impedance
state. The receiver input has a fail-safe feature that guaran-
tees a logic-high output if the input is open circuit.
The MAX487E and MAX1487E feature quarter-unit-load
receiver input impedance, allowing up to 128 transceivers
on the bus. The MAX488E–MAX491E are designed for full-
duplex communications, while the MAX481E, MAX483E,
MAX485E, MAX487E, and MAX1487E are designed for half-
duplex applications. For applications that are not ESD sen-
sitive see the pin- and function-compatible MAX481,
________________________Applications
______________________________________________________________Selection Table
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
MAX1487E
MAX483E
MAX487E
MAX489E
MAX491E
PART
Low-Power RS-422 Transceivers
Transceivers for EMI-Sensitive Applications
±15kV ESD-Protected, Slew-Rate-Limited,
DUPLEX
________________________________________________________________ Maxim Integrated Products
Half
Half
Full
Full
Low-Power, RS-485/RS-422 Transceivers
(Mbps)
0.25
0.25
2.5
2.5
SLEW-RATE
Yes
Yes
No
No
No
SHUTDOWN
Yes
No
No
No
____________________________Features
______________Ordering Information
MAX481ECSA
MAX481EESA
Slew-Rate Limited for Error-Free Data
Low Quiescent Current:
Three-State Outputs
(MAX481E/485E/490E/491E/1487E)
Download Maxim Integrated Products Others Driver
Allows up to 128 Transceivers on the Bus
Current Limiting and Thermal Shutdown for
RECEIVER/
230µA (MAX1487E)
ENABLE
PART
Yes
Yes
Yes
No
QUIESCENT
-40°C to +85°C
( A)
120
120
120
300
TEMP. RANGE
0°C to +70°C
NUMBER OF
128
32
32

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