ds1861 Maxim Integrated Products, Inc., ds1861 Datasheet
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ds1861
Manufacturer Part Number
ds1861
Description
Ds1861 Full Laser Control With Fault Management
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.DS1861.pdf
(25 pages)
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The DS1861 is a laser-driver control IC designed to
reduce the production cost of fiber optics circuits by
eliminating multiple temperature tests. It works with
nearly all laser-driver ICs to provide automatic power
control (APC) and automatic extinction ratio control
(AERC), which improves the performance of the system
over temperature and aging. It also has built-in monitor-
ing capability to provide early fault detection, which can
be configured to latch the IC into a shutdown condition.
Settings programmed into the DS1861 are stored in
password-protected EEPROM memory, which write-
protects calibration data. Programming is accom-
plished through an I
also be used to read diagnostic information.
Rev 0; 5/05
Pin Configuration appears at end of data sheet.
Purchase of I
license under the Philips I
Standard Specification as defined by Philips.
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.
Optical Transceivers
Optical Transponders
30kΩ
2
C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a
Full Laser Control with Fault Management
4.7kΩ
V
2
CC
C-compatible interface, which can
4.7kΩ
2
General Description
C Patent Rights to use these components in an I
4.7kΩ
TX-D
N.C.
GND
SCL
SDA
TX-F
N.C.
A2
A1
A0
Applications
______________________________________________ Maxim Integrated Products
DS1861
MODSET
BIASSET
BMD
V
CC
I
I
I
BIASSET
MODSET
BMD
V
CC
♦ Automatic Power Control (APC)
♦ Automatic Extinction Ratio Control (AERC)
♦ Works in AC-Coupled Laser Systems
♦ Configurable Latched Automatic Shutdown with
♦ Programmable Fast Alarm Conditions
♦ I
♦ Operates Over Wide Supply-Voltage Range
♦ Nonvolatile Memory for Device Settings
♦ Small, 14-Pin TSSOP Package
♦ -40°C to +95°C Operating Temperature Range
+Denotes lead free.
DS1861E
DS1861E+
Across Temperature and Laser Aging
Tx-Fault and Tx-Disable
Devices on the Same Serial Bus
2
C-Compatible Serial Interface Allows Up to Eight
BIAS
MOD
PART
2
1nF
C system, provided that the system conforms to the I
LASER DRIVER
MAX3736
Typical Operating Circuit
-40°C to +95°C
-40°C to +95°C
TEMP RANGE
BIAS
OUT
Ordering Information
14 TSSOP (173 mils)
14 TSSOP (173 mils)
V
PIN-PACKAGE
CC
Features
2
C
1