MAX3867ECM Maxim Integrated Products, MAX3867ECM Datasheet

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MAX3867ECM

Manufacturer Part Number
MAX3867ECM
Description
Laser Driver Integrated Circuits (ICs)
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX3867ECM

Case
TQFP
Dc
02+

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Part Number
Manufacturer
Quantity
Price
Part Number:
MAX3867ECM
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX3867 is a complete, single +3.3V laser driver
for SDH/SONET applications up to 2.5Gbps. The
device accepts differential PECL data and clock inputs
and provides bias and modulation currents for driving a
laser. The synchronizing input latch can be bypassed if
a clock signal is not available.
An automatic power control (APC) feedback loop is
incorporated to maintain a constant average optical
power over temperature and lifetime. The wide modula-
tion current range of 5mA to 60mA and bias current of
1mA to 100mA are easy to program, making this prod-
uct ideal for use in various SDH/SONET applications.
The MAX3867 also provides enable control, a program-
mable slow-start circuit to set the laser turn-on delay,
and a failure-monitor output to indicate when the APC
loop is unable to maintain the average optical power.
The MAX3867 is available in a small 48-pin TQFP pack-
age as well as dice.
19-4769; Rev 0a; 9/98
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
CLOCK GEN.
SERIALIZER
MAX3890
SONET/SDH Transmission Systems
Add/Drop Multiplexers
Digital Cross-Connects
Section Regenerators
2.5Gbps Optical Transmitters
WITH
124
84.5
________________________________________________________________ Maxim Integrated Products
+3.3V, 2.5Gbps SDH/SONET Laser Driver
84.5
General Description
124
+3.3V
84.5
124
Applications
84.5
124
with Automatic Power Control
DATA+
DATA-
CLK+
CLK-
MAX3867
* Dice are designed to operate over this range, but are tested and
guaranteed at T
Pin Configuration appears at end of data sheet.
MAX3867ECM
MAX3867E/D
Single +3.3V or +5V Power Supply
62mA Supply Current at +3.3V
Programmable Modulation Current from
5mA to 60mA
Programmable Bias Current from 1mA to 100mA
Rise/Fall Time < 90ps
Automatic Average Power Control with Failure
Monitor
Complies with ANSI, ITU, and Bellcore
SDH/SONET Specifications
Enable Control
PART
OUT+
OUT-
BIAS
MD
25
+3.3V
A
= +25°C only. Contact factory for availability.
Typical Operating Circuit
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
Ordering Information
0.056 F
*FERRITE
BEAD
20
1000pF
48 TQFP
Dice*
PIN-PACKAGE
LD
Features
1

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MAX3867ECM Summary of contents

Page 1

... Automatic Average Power Control with Failure Monitor Complies with ANSI, ITU, and Bellcore SDH/SONET Specifications Enable Control PART Applications MAX3867ECM MAX3867E/D * Dice are designed to operate over this range, but are tested and guaranteed at T Pin Configuration appears at end of data sheet. 124 DATA+ ...

Page 2

SDH/SONET Laser Driver with Automatic Power Control ABSOLUTE MAXIMUM RATINGS Supply Voltage, V ............................................. -0.5V to +7.0V CC Current into BIAS ...........................................-20mA to +150mA Current into OUT+, OUT- ................................-20mA to +100mA Current into MD.....................................................-5mA to +5mA Voltage at ...

Page 3

... MOD (Note 6) t 20% to 80% (Note 20% to 80% (Note 8) F (Note 8) (Notes 8, 9) Jitter BW = 12kHz to 20MHz, 0-1 pattern = +3.3V 30mA, and T CC MOD MIN TYP 100 100 5 -480 -50 250 -15 MAX3867ECM 79 MAX3867C/D 69 MAX3867ECM 88 (Note 10) MAX3867C/D 79 ±15 250 MAX UNITS 200 µA 480 ppm/° ...

Page 4

SDH/SONET Laser Driver with Automatic Power Control DATA+ DATA- (DATA+) - (DATA-) I Figure 1. Required Input Signal and Output Polarity ARE SMD FERRITE BEADS BLM11A601S MURATA ELECTRONICS A = ...

Page 5

SDH/SONET Laser Driver (V = +3.3V, load as shown in Figure EYE DIAGRAM (2.488Gbps, 1300nm FP LASER, 1.87GHz FILTER, 48-TQFP) 50ps/div ELECTRICAL EYE DIAGRAM 26mV /div PATTERN = CID ...

Page 6

SDH/SONET Laser Driver with Automatic Power Control (V = +3.3V, load as shown in Figure SUPPLY CURRENT vs. TEMPERATURE (EXCLUDE LOAD) BIAS MOD 100 + ...

Page 7

SDH/SONET Laser Driver PIN NAME 25 BIAS 29 OUT+ 30 OUT 34, 36, 40 GND3 CAPC 44 APCSET 46 MODSET 47 BIASMAX _______________Detailed Description The MAX3867 laser ...

Page 8

SDH/SONET Laser Driver with Automatic Power Control LATCH MAX3867 0 MUX DATA CLK ENABLE 172X MODSET BIASMAX R R MODSET BIASMAX Figure 4. Functional Diagram laser package is used to convert the optical power into ...

Page 9

SDH/SONET Laser Driver and MODSET. See the Design Procedure section for more details on open-loop operation. Optional Data Input Latch To minimize input data pattern-dependent jitter, the dif- ferential clock signal should be connected to the data input ...

Page 10

SDH/SONET Laser Driver with Automatic Power Control pattern-dependent jitter, three external components must be properly chosen: capacitor C nates the APC loop time constant; pull-up inductor L and AC-coupling capacitor filter out noise effects ...

Page 11

SDH/SONET Laser Driver Modulation Current More than 60mA At +5V power supply, the headroom voltage for the MAX3867 is significantly improved. In this case possible to achieve a modulation current of more than 60mA with AC-coupling, ...

Page 12

... Maxim product could create a situation where personal injury or death may occur. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1998 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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