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DS1862 PDF даташит

Спецификация DS1862 изготовлена ​​​​«Maxim Integrated Products» и имеет функцию, называемую «XFP Laser Control and Digital Diagnostic IC».

Детали детали

Номер произв DS1862
Описание XFP Laser Control and Digital Diagnostic IC
Производители Maxim Integrated Products
логотип Maxim Integrated Products логотип 

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DS1862 Даташит, Описание, Даташиты
www.DataSheet4U.com
Rev 0; 2/06
XFP Laser Control and Digital Diagnostic IC
General Description
The DS1862 is a closed-loop laser-driver control IC with
built-in digital diagnostics designed for XFP MSA. The
laser control function incorporates average power con-
trol (APC) and allows extinction ratio control though a
temperature indexed look-up table (LUT). The DS1862
monitors up to seven analog inputs, including tempera-
ture and monitor diode (MD) current, which are used to
regulate the laser bias current and extinction ratio.
Warning and alarm thresholds can be programmed to
generate an interrupt if monitored signals exceed toler-
ance. Calibration is also provided internally using inde-
pendent gain and offset scaling registers for each of
the monitored analog signals. Settings such as pro-
grammed calibration data are stored in password-pro-
tected EEPROM memory. Programming is accomplished
through an I2C*-compatible interface, which can also be
used to access diagnostic functionality.
Applications
Laser Control and Monitoring 10Gbps Optical
Transceiver Modules (XFP)
Laser Control and Monitoring
Digital Diagnostics in Optical Transmission
Features
Implements XFP MSA Requirements for Digital
Diagnostics, Serial ID, and User Memory
I2C-Compatible Serial Interface
Automatic Power Control (APC)
Extinction Ratio Control with Look-Up Table
Seven Monitored Channels for Digital Diagnostics
(Five Basic Plus Two Auxiliary)
Internal Calibration of Monitored Channels
(Temp, VCC2/3, Bias Current, Transmitted, and
Received Power)
Programmable Quick-Trip Logic for Turning
Off Laser for Eye Safety
Access to Monitoring and ID Information
Programmable Alarm and Warning Thresholds
Operates from 3.3V or 5V Supply
25-Pin CSBGA, 5mm x 5mm Package
Internal or External Temperature Sensor
-40°C to +100°C Operating Temperature Range
One 8-Bit Buffered DAC
TOP VIEW
A
1
B
C
D
E
Pin Configuration
2345
Ordering Information
PART
TEMP RANGE
DS1862B
-40°C to +100°C
DS1862B+ -40°C to +100°C
+Denotes lead-free package.
PIN-PACKAGE
25 CSBGA (5mm x 5mm)
25 CSBGA (5mm x 5mm)
CSBGA (5mm x 5mm)
Typical Operating Circuit appears at end of data sheet.
*Purchase of I2C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a
license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C
Standard Specification as defined by Philips.
______________________________________________ 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.









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DS1862 Даташит, Описание, Даташиты
XFP Laser Control and Digital Diagnostic IC
ABSOLUTE MAXIMUM RATINGS
Voltage on Any Open-Drain Pin
Relative to Ground.............................................-0.5V to +6.0V
Voltage on MOD-DSEL, SDA, SCL, FETG, THRSET, TX-D,
AUX1MON, AUX2MON, IBIASMON,
RSSI, BIASSET, MODSET, EN1,
and EN2 ............-0.5V to (VCC3 + 0.5V), not to exceed +6.0V
Voltage on SC-RX-LOS, SC-RX-LOL, RX-LOS, SC-TX-LOS,
MOD-NR, EN1,
and EN2 ............-0.5V to (VCC2 + 0.5V), not to exceed +6.0V
Operating Temperature Range .........................-40°C to +100°C
EEPROM Programming Temperature Range .........0°C to +70°C
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature...................See J-STD-020 Specification
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.
RECOMMENDED OPERATING CONDITIONS
(VCC3 = +2.9V to +5.5V, TA = -40°C to +100°C, unless otherwise noted.)
PARAMETER
Main Supply Voltage
Secondary Supply Voltage
High-Level Input Voltage
(SDA, SCL)
SYMBOL
VCC3
VCC2
CONDITIONS
(Note 1)
VCC2 not to exceed VCC3 (Note 2)
VIH IIH (max) = 10µA
Low-Level Input Voltage
(SDA, SCL)
VIL IIL (max) = -10µA
High-Level Input Voltage
(TX-D, MOD-DESEL,
P-DOWN/RST) (Note 3)
VIH IIH (max) = 10µA
Low-Level Input Voltage
(TX-D, MOD-DESEL,
P-DOWN/RST) (Note 3)
VIL IIL (max) = -10µA
MIN
+2.9
+1.6
0.7 x
VCC3
GND -
0.3
TYP
MAX
+5.5
+3.6
UNITS
V
V
VCC3 +
0.5
V
0.3 x
VCC3
V
2
VCC3 +
0.3
V
-0.3
+0.8
V
2 _____________________________________________________________________









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DS1862 Даташит, Описание, Даташиты
XFP Laser Control and Digital Diagnostic IC
DC ELECTRICAL CHARACTERISTICS
(VCC3 = +2.9V to +5.5V, VCC2 = +1.6V to +3.6V, TA = -40°C to +100°C, unless otherwise noted.)
PARAMETER
Supply Current
High-Level Output Voltage
(FETG)
SYMBOL
CONDITIONS
ICC3 P-DOWN/RST = 1
VOH IOH (max) = -2mA
MIN
VCC3 -
0.5
Low-Level Output Voltage
(MOD-NR, INTERRUPT, SDA,
and FETG)
VOL IOL (max) = 3mA
0
Resistor (Pullup)
I/O Capacitance
Leakage Current
Leakage Current (SCL, SDA)
Digital Power-On Reset
Analog Power-On Reset
RPU
CI/O
IL
IL
POD
POA
(Note 4)
9
-10
-10
1.0
2.0
TYP
3
12
MAX
5
UNITS
mA
V
0.4 V
15 k
10 pF
+10 µA
+10 µA
2.2 V
2.6 V
DC ELECTRICAL CHARACTERISTICS—INTERFACE SIGNALS TO SIGNAL CONDITIONERS
(VCC2 = +1.6V to +3.6V, VCC3 = +2.9V to +5.5V, TA = -40°C to +100°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
High-Level Input Voltage
(SC-RX-LOS, SC-RX-LOL,
and SC-TX-LOS)
VIH IIH (max) = 100µA
0.7 x
VCC2
VCC2 +
0.1
V
Low-Level Input Voltage
(SC-RX-LOS, SC-RX-LOL,
and SC-TX-LOS)
High-Level Output Voltage
(EN1 and EN2)
VIL IIL (max) = -100µA
VOH
VOH2
VOH3
IOH (max) = -0.7mA
VCC2 = 2.5V to 3.6V
IOH (max) = -2mA
VCC2 = 1.6V
IOH (max) = -0.7mA
0
VCC2 -
0.2
VCC2 -
0.4
VCC2 -
0.2
0.3 x
VCC2
V
V
Low-Level Output Voltage
(EN1, EN2, and RX-LOS)
Leakage Current
(SC-RX-LOS, SC-RX-LOL
and SC-TX-LOS, RX-LOS)
VOL
VOL2
IOL (max) = 0.7mA
VCC2 = 2.5V to 3.6V
IOL (max) = 2mA
IL
0.20
V
0.40
-10 +10 µA
_____________________________________________________________________ 3










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