applications up to 3.2Gbps. The device accepts either
PECL or CML level data inputs. The SY88912L provides
modulation current of up to 60mA for FP (Fabry-Perot) or
DFB (Distributed Feedback) laser.
There is a 75kΩ pull-down resistor to V
EE
at the input of
/EN. An active low PECL enable signal shuts off modulation
current.
APPLICATIONS
s
Fiber optical module
s
Transponder
s
XAUI CWDM
s
s
s
s
SONET/SDH transmission system
Add-drop mux
Metro area network
2.5Gbps optical transmitter
BLOCK DIAGRAM
V
CC
R
EXT
V
CC
V
CC
/OUT
OUT
D
IN
/D
IN
Internal
Logic
/EN
BIAS
Control
I
MOD
V
CC
GND
I
BIAS
V
REF
R
SET
R
SET
GND
MLF and
Micro
LeadFrame are trademarks of Amkor Technology, Inc.
M9999-081005
hbwhelp@micrel.com or (408) 955-1690
Rev.: B
Amendment: /0
1
Issue Date: August 2005
Micrel, Inc.
SY88912L
PACKAGE/ORDERING INFORMATION
GND
GND
VCC
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
912L
912L
912L with
Pb-Free bar-line indicator
912L with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Sn-Pb
Pb-Free
NiPdAu
Pb-Free
NiPdAu
DIN
GND
GND
/DIN
1
2
3
4
5
6
7
8
OUT
OUT
/OUT
/OUT
SY88912LMI
SY88912LMITR
(1)
SY88912LMG
SY88912LMGTR
(1)
Note:
1.
Tape and Reel.
VREF
VCC
16-Pin MLF™ (MLF-16)
RSET
GND
PIN NAMES
Pin
D
IN
, /D
IN
/EN
GND
OUT, /OUT
R
SET
V
CC
V
REF
Function
NRZ differential data inputs.
PECL compatible active low input.
Most negative power supply input.
Open collector outputs from the modulation
driver.
An external resistor between V
REF
and R
SET
defines the modulation current.
Most positive power supply input.
Voltage reference for use with R
SET
.
TRUTH TABLE
(1)
D
L
H
X
/D
H
L
X
/EN
L
L
H
OUT
(2)
H
L
H
/OUT
L
H
L
Notes:
1. L = LOW, H = HIGH, X = don't care.
2. I
OUT
≤
I
MOD_OFF
when /EN is HIGH.
M9999-081005
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
SY88912L
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
CC
V
IN
I
OUT
T
store
T
A
P
D
θ
JA(2)
ψ
JB
Note:
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 ratlng conditions for extended periods may affect device
reliability.
2. JEDEC standard test boards with DIE attach pads soldered to PCB.
Parameter
Power Supply Voltage
Input Voltage
Output Current
Storage Temperature
Operating Temperature
Power Dissipation
Package Thermal Resistance
(Junction-to-Ambient)
Package Thermal Resistance
(Junction-to-Board)
–Still-Air
Value
0 to +5.0
0 to V
CC
65
–55 to +125
–40 to +85
500
59
32.1
Unit
V
V
mA
°C
°C
mW
°C/W
°C/W
OPERATING CONDITIONS
Symbol
V
CC
R
EXT(1)
R
SET
Note:
1.Refer to V
OUT
specification.
Parameter
Power Supply Voltage
Resistor to Dissipate Power
Resistor to Set I
MOD
Value
+3.15 to +3.45
5 (Min.)
100 to 10,000
Unit
V
Ω
Ω
M9999-081005
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
SY88912L
DC ELECTRICAL CHARACTERISTICS
V
CC
= 3.15 to 3.45V; GND = 0V; T
A
= –40°C to +85°C
Symbol
I
CC
I
MOD
I
MOD_OFF
V
IDDIN
V
IHDIN
V
ILDIN
V
IHEN
V
ILEN
V
OUT
V
REF
Notes:
1.
2.
3.
4.
Excluding I
MOD
. I
MOD
≤
60mA
Typical values are under V
CC
= 3.3V and T
A
= 25°C.
V
IDDIN
is the voltage required to guarantee a stable logic level. For a logic "1", D
IN
must be V
IDDIN
above /D
IN
. For stable logic "0", D
IN
must be V
IDDIN
below /D
IN
.
OUT and /OUT are current outputs. This specification defines the voltage range that the user must guarantee these pins remain within proper operation.
Parameter
Power Supply Current
(1)
Modulation Current Range
Modulation Off Current
(2)
Input Differential Voltage, D
IN
, /D
IN
Input HIGH Voltage, D
IN
, /D
IN
Input LOW Voltage, D
IN
, /D
IN
Input HIGH Voltage, /EN
Input LOW Voltage, /EN
Output Voltage, OUT, /OUT
Reference Voltage1.5
Min.
—
10
—
200
V
CC
–1.7
V
CC
–1.9
V
CC
–1165
V
CC
–1810
V
CC
–1.5
1.7
Typ.
(2)
65
—
—
—
—
—
—
—
—
1.9
Max.
80
60
200
1600
V
CC
–0.1
V
CC
–0.3
V
CC
–880
V
CC
–1475
V
CC
V
Unit
mA
mA
µA
mV
PP
V
V
mV
mV
V
Condition
I
MOD
= 60mA
/EN = V
IHEN
(3)
(4)
AC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= 3.15 to 3.45V; GND = 0V; T
A
= –40°C to +85°C
Symbol
D
J
t
r
, t
f
Notes:
1. AC characteristics are guaranteed by design and characterization.
2. I
MOD
= 40mA, 25Ω resistors each tied from OUT and /OUT to V
CC
.
3. I
MOD
= 40mA, 2.5Gbps, 0-1 pattern, BW = 12KHz to 20MHz.
Parameter
Jitter Generation
(2),(3)
Rise/Fall Times
(2)
(20% to 80%)
Min.
—
—
Typ.
—
65
Max.
20
—
Unit
ps
ps
Condition
peak-to-peak
70
60
50
I
MOD
(mA)
40
30
20
10
0
0.1
I
MOD
vs. R
SET
1
R
SET
(kΩ)
10
Figure 1. I
MOD
vs. R
SET
M9999-081005
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
SY88912L
16 LEAD EPAD-Micro LEADFRAME™ (MLF-16)
Rev. 01
Package
EP- Exposed Pad
Die
CompSide Island
Heat Dissipation
Heat Dissipation
V
EE
Heavy Copper Plane
V
EE
Heavy Copper Plane
PCB Thermal Consideration for 16-Pin MLF™ Package
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.
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