02067-DSH-001-G

02067-DSH-001-G MA-COM | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 20

Technical content

Features

• Rise and fall times <150 ps  DC or AC-coupled modulation drive  Independently program mable laser bias and modulation currents  Bias current to 100 mA and m odulation current to 85 mA at V CC = 3.3V  Automatic laser power control, with programmable temperature compensation and ‘slow-start’  Bias and modulation current monitors  Operates with +3.3V supply

Applications

 Gigabit Ethernet  Fibre Channel  2 x Fibre Channel G B I C Functional Block Diagram X100 X60 Failure Detect DIS ENA FAIL OCA DATA BIASMON MODMON IBIAS IMOD OUT- OUT+ VCC IBIAS RMODSET RTCSLOPE RTCSTART RMPCSET VCC CMPC VREF PD ROCA OCASET RD GNDA RSHUNT CSHUNT VCC M02067 3.3 Volt Laser Driver IC for GbE and Fibre Channel to 2.1 Gbps

02067-DSH-001-G Mindspeed Technologies® ii Mindspeed Proprietary and Confidential

Ordering Information

M02067G-12 QFN package (-12 marking) M02067G-13 QFN package (-12 • marking) M02067-TEVM TO-Can optic al evaluation board Current part number ordering information for this part on mindspeed.com * The letter “G” designator after the part number indicates that the device is RoHS-compliant. Refer to www.mindspeed.com for additional information.

Revision History

Revision Level Date Description G Release July 2011 Added M 02067G-13 ordering information and screen limit. F Release January 2011 Revised R MODSET value in Table 1-3, Note 4. Revised production test conditions in Table 1-5. E Release November 2010 Updated ordering information, packaging information. Added DC screen information. Replaced all CX02067 references with M02067. D Preliminary October 2007 Upda ted ordering information. C Preliminary June 2006 Added RoHS package inform ation, updated format, no specification changes. B Preliminary May 2005 Updated to new data sheet format. A Advance October 2003 Advance. M02067-12 and M02067-13 Marking Diagrams XXXXX YYWW CC 02067G Part Number Lot Number Date and Country Code XXXXX YYWW CC 02067G -1 2 -1 2 M02067G-12 M02067G-13

02067-DSH-001-G Mindspeed Technologies® iii Mindspeed Proprietary and Confidential Top View Pin Configuration (See Figure 4-1 for detailed drawing) 7 8 9 10 11 12 13 1924 23 22 21 201ENA DIS FAIL OCA GND BIAS OUT+ OUT- PD GND GND VCC GNDA CMPC TCSLOPE TCSTART MODSET OCASET DIN DIN VCC 4mm BIASMON 4mm MODMON VCC 2067

02067-DSH-001-G Mindspeed Technologies® 1 Mindspeed Proprietary and Confidential

1.0 Product Specification

1.1 Absolute Maximum Ratings

These are the absolute maximum ratings at or beyond which the IC can be expected to fail or be damaged. Reliable operation at these extremes for any length of time is not implied.

1.2 Recommended Operating Conditions

Table 1-1. Absolute Maximum Ratings Parameter Rating Units Power supply (VCC-GND) -0.5 to +6.0 V Maximum laser bias current 120 mA Maximum laser modulation current (through OUT+, OUT-) 100 mA Storage temperature -65 to +150 °C Junction temperature (die) -40 to +120 °C Table 1-2. Recommended Operating Conditions Parameter Rating Units Power supply (VCC-GND) 3.3 ± 10% V Operating ambient temperature -40 to +85 °C

02067-DSH-001-G Mindspeed Technologies® 2 Mindspeed Proprietary and Confidential

1.3 DC Characteristics

Table 1-3. DC Characteristics Parameter Conditions Min Typ Max Units Supply current Excluding I BIAS and IMOD but with IBIAS and IMOD set to maximum -5 2 6 4 m A Bias current adjust range Limited by I REF across temperature range 4 - 100 mA Bias current with output disabled Tx-Dis = HIGH - - 300 µA Maximum bias current limit T A = +85 °C (adjustable) 100(1) --m A Monitor diode reverse bias voltage 2 - - V Monitor diode current adjustment range 40 - 1000 µA TTL/CMOS input HIGH voltage (enable/ disable) 2.0 - - V TTL/CMOS input LOW voltage (enable/ disable) -- 0 . 8 V CMOS output HIGH voltage (Fail,OCA) 2.4 - - V CMOS output LOW voltage (Fail,OCA) - - 0.4 V Differential input impedance Data and clock inputs 2.5 - - k Ω Common-mode input voltage‘ V CC -1.38 - V CC - VIN(Diff) V Self-biased common mode input voltage Dat a and clock inputs V CC -1.38 - V CC -0.47 V Ratio of bias monitoring current, and bias current Ratio of modulation monitoring current, and modulation current Tx_Disable negate time (2) CMPC = 3.8 nF .5 1 ms Tx_Disable assert time (3) 1µ s Modulation Off Current (4) Measured at pin OUT-, temperature at 75 °C 300 µA VCC = +3.3V ±10%, TA = -40 °C to +85 °C, unless otherwise noted Notes: (1)Condition when pin 19 OCA SET is connected to ground. (2)Time for optical power to reach 90% of its mean level following negation of Tx_Disable. (3)Time for optical power to reach 10% of its mean level following assertion of Tx_Disable. (4)Data input voltage (Vpin21 – Vpin22) > 300 mV, ENA (pin 1) connected to VCC, DIS (pin 2) connected to ground. RMODSET = 5.5 kΩ, resistance to ground at GNDA = 0.35 Ω.

02067-DSH-001-G Mindspeed Technologies® 3 Mindspeed Proprietary and Confidential

1.4 AC Characteristics

1.5 DC Screen

The M02067 is screened under the following conditions. TA = 25 °C, VCC = 3.3 V, RMODSET = 8.46 kΩ Table 1-4. AC Characteristics Parameter Conditions Min. Typ. Max. Units. Differential input voltage = 2 x (D IN+HIGH-DIN+LOW) 300 - 1860 mV Modulation current range 2.5 - 85 mA Modulation current with output disabled DIS = HIGH - - 300 µA Programmable range for modulation current temperature coefficient Adjustable 500 - 104 ppm/°C Programmable temperature at which modulation current TC compensation enables Programmed by choice of R TCSLOPE 20 - 60 °C Modulation output rise/fall times 20% to 80% into 25 Ω, with matching network - - 150 ps Overshoot of modulation output current Into 25 Ω load, with matching network -5 - +5 % Modulation output Pulse width distortion Measured using alternating 1-0 pattern - - 50 ps Modulation output deterministic jitter Peak-to-peak. Measured into 25 Ω load using 27- 1 PRBS at 2.1 Gbps - - 50 ps Notes: VCC = +3.3V ±10%, TA = -40 °C to +85 °C, unless otherwise noted Table 1-5. DC Screen Part Number Parameter Production Test Conditions Screen Limits M02067G-12 Modulation Current Measured at pin OUT- Load resistor at OUT- is 24 Ω connected to VCC 41.8 mA min. to 50.8 mA max M02067G-13 Modulation Current Measured at pin OUT- Load resistor at OUT- is 24 Ω connected to VCC 41.8 mA min. to 48.0 mA max

02067-DSH-001-G Mindspeed Technologies® 4 Mindspeed Proprietary and Confidential

2.0 Pin Description

2.1 Pin Descriptions

Table 2-1. Pin Descriptions Pin Number Pin Name Function 1 ENA Bias and modulation out put enable (TTL/CMOS). Logic HIGH for normal operation. 2 DIS Bias and modulation out put disable (TTL/CMOS). Logic LOW for normal operation. 3B I A S MON Bias monitor. Connect a resistor between this pin and VCC to monitor bias current. Connect to VCC if not used. 4M O D MON Modulation monitor. Connect a resistor between this pin and VCC to monitor modulation current. Connect to VCC if not used. 5F A I L Mean power control failure indicator (TTL/CMOS). Goes LOW when control loop is no longer able to maintain constant current at PD. 6O C A Over-current alarm (TTL/CMOS). Goes LOW when IBIAS exceeds the preset bias current limit. 7 GND Ground. 8 BIAS Laser bias current output. CC Power supply. 10 OUT+ Positive modulation curren t output. Sinks current when DIN is HIGH. 11 OUT- Negative modulation current output. Sinks current when DIN is HIGH. 12 GND A Ground to output stage. 13 PD Monitor photodiode input. This input is connected to the monitor photodiode anode for automatic power control. 14 C MPC Mean power control dominant pole capacitor. Connect to VCC via a capacitor. 15 GND Ground. 16 TC SLOPE Connecting a resistor between this pin and ground sets the temperature coefficient of IMODSET. 17 TC START Secondary temperature coefficient of IMOD. A resistor on this pin to ground sets the threshold temperature at which compensation starts. 18 MOD SET Modulation current set. Connect a resistor between this pin and ground to set. 19 OCA SET Over-current alarm set. Connect a resistor between this pin and ground to set. 20 V CC Power supply. 21 D IN Positive data input (PECL). Self biased. 22 D IN Negative data input (PECL). Self biased.

02067-DSH-001-G Mindspeed Technologies® 5 Mindspeed Proprietary and Confidential 23 V CC Power supply. 24 GND Ground. Note: Center pad (pad 25) should be connected to ground. Table 2-1. Pin Descriptions (Continued) Pin Number Pin Name Function

02067-DSH-001-G Mindspeed Technologies® 6 Mindspeed Proprietary and Confidential

3.0 Functional Description

3.1 Overview

The M02067 laser driver consists of a high-speed modulation driver and a laser bias generator with mean power control (MPC). It is optimized for high speed, low power operation at 3.3V supply. Figure 3-1 demonstrates the functionallity of the M02067. Figure 3-1. M02067 Block Diagram X100 X60 Failure Detect DIS ENA FAIL OCA DATA BIASMON MODMON IBIAS IMOD OUT- OUT+ VCC IBIAS RMODSET RTCSLOPE RTCSTART RMPCSET VCC CMPC VREF PD ROCA OCASET RD GNDA RSHUNT CSHUNT VCC

02067-DSH-001-G Mindspeed Technologies® 7 Mindspeed Proprietary and Confidential

3.2 Features

 Rise and fall times <150 ps  DC or AC-coupled modulation drive  Independently programmable laser bias and modulation currents  Bias current to 100 mA and modulation current to 85 mA at V CC = 3.3V  Automatic laser power control, with programmable temperature compensation and ‘Slow-Start’  Bias and modulation current monitors  Operates with +3.3V supply

3.3 Modulator

The modulator output stage is designed to drive up to 85 mA in either AC-coupled or DC-coupled mode. DC- coupled performance depends on the laser used. The M02067 modulation output is optimized for driving a 25Ω load; the minimum required voltage at OUT+ and OUT - is 0.6V. To interface with the laser diode, a matching resistor (RD) is required for impedance matching. An RC shunt network is necessary to compensate for the laser diode parasitic inductance, thereby improving the optical eye. Typical values are R SHUNT = 51Ω, CSHUNT = 3.3 pF Any capacitive loading at the cathode of a laser diode will degrade the optical output performance. An inductor is used to isolate the BIAS pin from the laser cathode. Figure 3-2 shows the typical IMOD vs RMODSET characteristic. Figure 3-2. Modulation Current for Given R MODSET Resistor 100 120 0 4000 8000 12000 16000 20000 24000 28000 32000 RMODSET (Ω) IMOD (mA)

02067-DSH-001-G Mindspeed Technologies® 9 Mindspeed Proprietary and Confidential

3.4 Mean Power Control Loop

The M02067 employs a Mean Power Control (MPC) loop to maintain a constant optical output power from the laser across temperature, time and power supply variations. Laser diodes used for communication purposes come with integrated photo-diodes to monitor the output power and provide the feedback for the MPC loop. The MPC loop (or its integrated safety features) cannot be used without this feedback. The MPC loop adjusts the laser bias current so that the monitor current from the photo-diode is matched to a reference current set by a single external resistor, R MPCSET. The time constant of the MPC loop is determined by CMPC. (at 6 dB cut off frequency) vs CMPC (for nominal process) Figure 3-6 shows the bias current vs RMPCSET over the full operating temperature range for a typical laser and monitor photodiode. Figure 3-5. 2 x Fibre Channel 2.125 Gbps Electrical Eye Diagram Table 3-1. MPC Loop Bandwidth CMPC 6 dB cutoff frequency 0 17 MHz 1 nF 100 kHz 10 nF 10 kHz 100 nF 1 kHz 2 x Fibre Channel 2.125 Gbps 30 mApp Modulation Current

02067-DSH-001-G Mindspeed Technologies® 11 Mindspeed Proprietary and Confidential

3.5 Enable Control

The M02067 incorporates a dual polarity laser enable function with both enable (ENA) and disable (DIS) inputs. Under normal operating conditions the ENA will be HIGH while DIS is LOW. Should ENA go LOW (or DIS go HIGH) both the bias and modulation currents will be disabled. Wire OR-ing the OCA and FAIL pins externally and connecting them to the ENA pin will automatically disable the bias and modulation currents when a failure occurs.

3.6 Current Monitors

The M02067 features bias and modulation current monitor outputs. The BIASMON output sinks a current equal to nominally 1/55 of the laser bias current (IBIAS). The MODMON output sinks a current equal to nominally 1/55 of the laser modulation current (IMOD). BIASMON and MODMON should be connected through a pull-up resistor to VCC. Choose a pull-up resistor value that ensures a voltage at BIASMON greater than VCC - 1.6V and a voltage at MODMON greater than VCC - 1.0V. These pins should be tied to VCC if not used.

3.7 Slow-Start

For laser safety and reliability, the M02067 incorporates a slow-start circuit that provides a delay of approximately 200 ns before enabling the laser diode.

02067-DSH-001-G Mindspeed Technologies® 12 Mindspeed Proprietary and Confidential

3.8 Temperature Compensation

The M02067 features built in temperature compensation of the modulation current is set using two external resistors, TCSLOPE and TCSTART see Figure 3-8. Current pulled from TCSLOPE adjusts the slope of the temperature compensation whereas current pulled from TCSTART sets the threshold temperature for the coefficient. Figures 3-9 through 3-11 show IMOD temperature compensation using a combination of resistor values for RTCSLOPE and RTCSTART. Figure 3-8. Temperature Compensation TC SLOPE TC START 80mA 0mA +80°C-40°C RMPCSET

02067-DSH-001-G Mindspeed Technologies® 14 Mindspeed Proprietary and Confidential

3.9 Laser eye safety

All lasers for commercial and industrial use, including lasers for optical communications are classified for eye safety considerations in IEC 60825-1, CDRH and other national standards. Figure 3-11. NOTE: The M02067 alone does NOT ensure that any application within which it is used will be fully compliant with the relevant eye-safety requirements. It remains the sole responsibility of the user of this component to ensure that the application within which the M02067 is used meets all eye-safety requirements. 0.04 0.05 0.06 0.07 0.08 0.09 0.1 -40 -20 0 20 40 60 80 100 Temperature (°C) Imod (A) 5000 10000 20000 32000 RTCSLOPE - Figures shown are in Ω RTCSTART = 400 Ω , VCC = 3.3V

02067-DSH-001-G Mindspeed Technologies® 15 Mindspeed Proprietary and Confidential

4.0 Packaging Specification

4.1 Packaging Specification

Table 4-1. Packaging Specifications Parameter Value Assembly location ASE Malaysia X dimension (mm) 4.00 ± 0.10 Y dimension (mm) 4.00 ± 0.10 Z dimension (mm) 0.90 ± 0.10 Pad standoff (mm) 0.02 + 0.03, -0.02 Terminal finish 100% Matte SN Marking Laser

02067-DSH-001-G Mindspeed Technologies® 16 Mindspeed Proprietary and Confidential Figure 4-1. M02067 QFN24 Package Outline Drawing

www.mindspeed.com General Information: Telephone: (949) 579-3000 Headquarters - Newport Beach 4000 MacArthur Blvd., East Tower Newport Beach, CA 92660 © 2010 - 2011 Mindspeed Technologies®, Inc. All rights reserved. Information in this document is provided in connection with Mindspeed Technologies® ("Mindspeed®") products. These materials are provided by Mindspeed as a service to its customers and may be used for informational purposes only. Except as provided in Mindspeed’s Terms and Conditions of Sale for such products or in any separate agreement related to this document, Mindspeed assumes no liability whatsoever. Mindspeed assumes no responsibility for errors or omissions in these materials. Mindspeed may make changes to specifications and product descriptions at any time, without notice. Mindspeed makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF MINDSPEED PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY , OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. MINDSPEED FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. MINDSPEED SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS, WHICH MAY RESULT FROM THE USE OF THESE MATERIALS. Mindspeed products are not intended for use in medical, lifesaving or life sustaining applications. Mindspeed customers using or selling Mindspeed products for use in such applications do so at their own risk and agree to fully indemnify Mindspeed for any damages resulting from such improper use or sale. 02067-DSH-001-G Mindspeed Technologies® 17 Mindspeed Proprietary and Confidential