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Micrel, Inc.
3.3V 3.2Gbps SONET/SDH LASER DRIVER WITH OUTPUT DISABLE
DESCRIPTION
SY88932L
SY88932L
FEATURES
s s s s s s s s s s Up to 3.2Gbps 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 MLFTM package
The SY88932L is the smallest available laser driver with a programmable modulation current up to 60mA for FabryPerot (FP) or distributed feedback (DFB) lasers. The device is suitable for SONET/SDH applications with data rates up to 3.2Gbps. 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. All support documentation can be found on Micrel's web site at www.micrel.com.
APPLICATIONS
s s s s s s s Fiber optical module Transponder XAUI CWDM SONET/SDH transmission system Add-drop MUX Metro area network 2.5Gbps optical transmitter
BLOCK DIAGRAM
VCC REXT VCC VCC
/OUT OUT
DIN /DIN Internal Logic
/EN VREF Generator Modulation Control IMOD VCC GND IBIAS
VREF
VCNTRL
GND
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc. M9999-082205 hbwhelp@micrel.com or (408) 955-1690
Rev.: E Amendment: /0
1
Issue Date: August 2005
Micrel, Inc.
SY88932L
PACKAGE/ORDERING INFORMATION
VCNTRL VREF
GND
Ordering Information
Part Number
12 11 10 9
/EN
16
15
14
13
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
GND DIN /DIN GND
1 2 3 4 5 6 7 8
OUT OUT /OUT /OUT
SY88932LMI SY88932LMITR(1) SY88932LMG SY88932LMGTR(1)
Note: 1. Tape and Reel.
VCC
VCC
16-Pin MLFTM
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 on 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.
GND
GND
/D H L X
/EN L L H
OUT(3) H L H
/OUT L H L
M9999-082205 hbwhelp@micrel.com or (408) 955-1690
2
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, 10 sec.) ..................... 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 Package Thermal Resistance(3) MLFTM (JA) Still-air ............................................ 61C/W MLFTM (JB) Still-air ............................................ 38C/W
DC ELECTRICAL CHARACTERISTICS
VCC = 3.0 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 if 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 data sheet. Exposure to Absolute Maximum Ratings conditions forextended periods may affect device reliability. 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Thermal resistance numbers are for 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. V 5. VID is the voltage required to guarantee a stable logic level. For logic "1", DIN must be ID above /DIN. For stable logic "0", DIN must 2 VID be below /DIN. 2 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
Typ 57
Max 80 60 200
Units mA mA A V mVpp V
10 /EN = VIHEN VCC-0.8 Note 5 400 2.0 800
VCC+0.4 1600
0.8 Note 6 Note 7 VCC-1.5 1.2 1.25 VCC 1.3
V V V
M9999-082205 hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
SY88932L
AC ELECTRICAL CHARACTERISTICS(8)
VCC = 3.0 to 3.6V, GND = 0V, TA = -40C to +85C; Typical values at VCC = 3.3V, TA = 25C, RLOAD = 25 to VCC (OUT, /OUT). 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 Notes 9, 10
Min
Typ 65 20
Max 100
Units ps pspp
TYPICAL OPERATING CHARACTERISTICS
80 70 60 IMOD (mA) 50 40 30 20 10 0 0
IMOD vs. VCNTRL
VCC = 3.3V TA = 25C 0.2 0.4 0.6 0.8 1 VCNTRL (V) 1.2 1.4
M9999-082205 hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
SY88932L
16 LEAD EPAD-MicroLeadFrameTM (MLF-16)
Package EP- Exposed Pad
Die
CompSide Island
Heat Dissipation Heat Dissipation VEE Heavy Copper Plane VEE Heavy Copper Plane
PCB Thermal Consideration for 16-Pin MLFTM Package Package Notes: 1. Package meets Level 2 qualification. 2. All parts are dry-packaged before shipment. 3. Exposed pads must be soldered to a ground for proper thermal management.
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 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 at Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2005 Micrel, Incorporated. M9999-082205 hbwhelp@micrel.com or (408) 955-1690
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