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SY88932L
3.3V, 4.25Gbps SONET/SDH Laser Driver with Output Disable
General Description
The SY88932L is the smallest available laser driver with a programmable modulation current up to 60mA for FabryPerot (FP) or distribution feedback (DFB) lasers. The device is suitable for SOENT/SDH applications with data rates up to 4.25Gbps. The SY88932L accepts either CML level or AC-coupled PECL inputs, and incorporates an active low TTL /EN function which shuts off the modulation current when HIGH. Datasheets and support documentation can be found on Micrel's web site at www.micrel.com.
Features
* * * * * * * * * * Up to 4.25Gbps operation Modulation current to 60mA Rise/fall times 65ps typical Input 50 internally terminated to VCC TTL /EN with internal 75k pull-down Designed for use with MIC3000 optical transceiver management IC Voltage programmable laser modulation current Single 3.3V power supply Operating temperature range of -40C to +85C Available in tiny 16-pin MLF(R) package
Applications
* * * * * * * Fiber optical module Transponder XAUI CWDM SONET/ SDH transmission system Add-drop MUX Metro area network 4.25Gbps optical transmitter
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Block Diagram
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel +1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
February 2008
M9999-022008-F hbwhelp@micrel.com or (408) 955-1690
Micrel, Inc.
SY88932L
Ordering Information
Part Number SY88932LMI SY88932LMITR SY88932LMG SY88932LMGTR(1)
Note: 1. Tape and Reel.
(1)
Package Type MLF-16 MLF-16 MLF-16 MLF-16
Operating Range Industrial Industrial Industrial Industrial
Package Marking 932L 932L 932L with Pb-Free bar-line indicator 932L with Pb-Free bar-line indicator
Lead Finish Sn-Pb Sn-Pb Pb-Free NiPdAu Pb-Free NiPdAu
Pin Configuration
16-Pin MLF(R) (MLF-16)
February 2008
2
M9999-022008-F hbwhelp@micrel.com or (408) 955-1690
Micrel, Inc.
SY88932L
Pin Description
Pin Number 2, 3 1, 4, 7, 8, 13 5, 6 9, 10, 11, 12 14 15 16 Pin Name DIN, /DIN GND VCC OUT, /OUT VREF VCNTRL /EN Pin Function NRZ differential data (inputs), CML terminated interface with 50 to VCC. Ground. Positive power supply. Open collector (outputs) from the modulation driver. Voltage reference, nominally 1.25V with respect to ground. Voltage control of IMOD. 5k input impedance. See "Typical Operating Characteristics." Enable: TTL-compatible active low input with 75k pull-down resistor.
Truth Table(1,2)
D L H X
Notes: 1. Truth table parameters are given for voltage rather than optical outputs. Hence, a voltage HIGH and OUT means no modulation current is flowing through OUT, and a voltage LOW on OUT means modulation current is flowing through OUT. A voltage LOW implies an optical HIGH, and vice versa. 2. L = LOW, H = HIGH, X = don't care. 3. IOUT IMOD_OFF when /EN is HIGH.
/D H L X
/EN L L H
OUT(3) H L H
/OUT L H L
February 2008
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M9999-022008-F hbwhelp@micrel.com or (408) 955-1690
Micrel, Inc.
SY88932L
Absolute Maximum Ratings(1)
Supply Voltage (VCC).................................... -0.5V to +4.0V CML Input Voltage (VIN) ..................VCC -1.0V to VCC +0.5V TTL Control Input Voltage (VIN)............................. 0V to VCC Lead Temperature (soldering, 20sec.)....................... 265C Storage Temperature (Ts) .........................-65C to +150C
Operating Ratings(2)
Supply Voltage (VCC).................................... +3.0V to +3.6V Ambient Temperature (TA) .......................... -40C to +85C Junction Temperature (TJ) ........................ -40C to +120C Junction Thermal Resistance(3) MLF(R) (JA) Still-Air .......................................................61C/W (JB) Still-Air.......................................................38C/W
DC Electrical Characteristics
VCC = 3.0V to 3.6V; GND = 0V; TA = -40C to +85C, Typical values at VCC = 3.3V, TA = 25C.
Symbol ICC IMOD IMOD_OFF VIR VID VIHEN VILEN VOUT VREF
Notes: 1. Permanent device damage may occur is Absolute Maximum Ratings are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this datasheet. Exposed to Absolute Maximum Ratings conditions for extended periods may affect device reliability. 2. The device is not guaranteed to function outside its operating rating. 3. Thermal resistance numbers are 4-layer PCB. Thermal performance assumes exposed pad is soldered (or equivalent) to the same potential as the ground pins on the PCB. 4. Excluding IMOD. IMOD set to 60mA with 25 load to VCC on OUT, /OUT. Inputs floating. 5. VID is the voltage required to guarantee a stable logic level. For logic "1", DIN must be VID/2 above /DIN. For stable logic "0", DIN must be VID/2 below /DIN. 6. OUT and /OUT are current outputs. This specification defines the voltage range that the user must guarantee these pins remain within for proper operation. 7. VREF intended to source/sink |5mA|.
Parameter Power Supply Current Modulation Current Range Modulation Off Current CML Input Voltage Range CML Input Differential Voltage (DIN, /DIN) TTL Input HIGH Voltage (/EN) TTL Input LOW Voltage (/EN) Voltage (OUT, /OUT) Reference Voltage
Condition Note 4
Min 10
Typ 57
Max 80 60 200 VCC+0.4
Units mA mA A V mVPP V
/EN = VIHEN VCC-0.8 Note 5 400 2.0 800
1600
0.8 Note 6 Note 7 VCC-1.5 1.2 1.25 VCC 1.3
V V V
February 2008
4
M9999-022008-F hbwhelp@micrel.com or (408) 955-1690
Micrel, Inc.
SY88932L
AC Electrical Characteristics(8)
VCC = 3.0V to 3.6V; GND = 0V; TA = -40C to +85C, Typical values at VCC = 3.3V, TA = 25C.
Symbol tr, tf DJ
Notes: 8. AC characteristics are guaranteed by design and characterization. 9. IMOD = 60mA. 10. Deterministic jitter measured using K28.5 pattern of 2.486Gbps, VID = 1600mVPP.
Parameter Output Rise/Fall Times (20% to 80%) Deterministic Jitter
Condition Note 9 Note 9, 10
Min
Typ 65 20
Max 100
Units ps psPP
Typical Operating Characteristics
February 2008
5
M9999-022008-F hbwhelp@micrel.com or (408) 955-1690
Micrel, Inc.
SY88932L
Package Information
16-Pin MLF(R) (MLF-16)
February 2008
6
M9999-022008-F hbwhelp@micrel.com or (408) 955-1690
Micrel, Inc.
SY88932L
PCB Thermal Consideration for 16-Pin MLF(R) Package
Package Notes: 1. 2. 3. Package meets Level 2 qualifications. All parts are dry-packaged before shipment. Exposed pads must be soldered to a ground for proper thermal management.
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2008 Micrel, Incorporated.
February 2008
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