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Datasheet: F0532506Q (Eudyna Devices Inc.)

3.3V 2.5 Gb/s Nrz Data Rate Laser Diode Driver

 

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Eudyna Devices Inc.
Features
Up to 2.5 Gb/s high speed operation
Clocked (MS-D/FF) or Non-clocked
operation can be selected
Disable function of modulation current
and bias current
Bias current monitoring
3.3 V or - 3.3 V single Voltage Supply operation
Up to 50 mA modulation current
Up to 50 mA bias current
Differential ECL compatible interface
On-chip 50
terminations
Internal voltage reference for AC coupling
Applications
Laser diode driver of an optical transmitter circuit up to 2.5 Gb/s
Functional Description
The F0532506Q is a high performance GaAs laser diode driver IC applicable in an opti-
cal transmitter circuit up to 2.5 Gb/s NRZ data rate (especially suitable for SDH [STM-16] /
SONET [OC-48]).
The F0532506Q specifies the rise time and the fall time of 80 ps (20 % - 80 %, 25
load)
typically. It features the single +3.3 V or - 3.3 V supply operation, the modulation current
between 4 mA and 50 mA, and the bias current between 4 mA and 50 mA.
02.07.30
Laser Diode Driver
3.3 V 2.5 Gb/s NRZ Data Rate
F0532506Q
Advance
F0532506Q
3.3 V 2.5 Gb/s Laser Diode Driver
Absolute Maximum Ratings
Ta=25
C, unless specified.
V
DD -
V
SS
V
T
a
C
Units
Value
Max.
Typ.
Min.
3.50
70
3.30
25
3.10
0
Symbol
Parameter
Supply Voltage
Ambient Operating Temperature
Units
V
mA
V
V
V
V
V
V
mA
V
V
C
C
Parameter
Supply Voltage
Supply Current *1
Input Voltage (D
IN
, D
INB
, CK
IN
,CK
INB
)
Input Voltage (DIS
IN
, SEL
IN
)
Input Voltage (V
M1
, V
B1
)
Input Voltage (V
M0
, V
B0
)
Input Voltage (V
REG
)
Output Voltage (OUT, OUT
B
, OUT
BIAS
)
Output Current (OUT, OUT
B
, OUT
BIAS
)
Output Voltage (BM, BM
B
)
Termination Voltage (V
TTD
, V
TTCK
)
Storage Temperature
Ambient Operating Temperature
Symbol
V
DD
- V
SS
I
CC
V
IN
V
INC1
V
INC2
V
INC3
V
INC4
V
OUT
I
OUT
V
OUTM
V
TT
Tstg
Ta
Value
- 0.3 to +4.0V
200
V
DD
- 2.5 to V
DD
V
SS
to V
DD
+ 0.5
V
SS
to V
SS
+ 1.7
V
SS
to V
SS
+ 0.7
V
SS
to V
DD
V
DD
- 2.0 to V
DD
+ 0.5
0 to 70
V
SS
to V
DD
+ 0.5
V
DD
- 2.5 to V
DD
+ 0.5
- 55 to + 125
0 to + 70
*1 Excluding the input current, the modulation current and the bias current.
Recommended Operating Conditions
3.3 V 2.5 Gb/s Laser Diode Driver
F0532506Q
Electrical Characteristics
Ta=25
C, V
DD
- V
SS
= 3.1 V to 3.5 V, V
SS
=0 V, unless specified
*1 Excluding the input current, the modulation current and the bias current.
Parameters
Circuit Current *1
Input Voltage
(ECL Interface)
Input Voltage
(AC coupled interface)
Input Resistor
Modulation Peak
Current
Bias Current
Input Voltage (DIS)
Input Voltage (SEL)
Bias Monitor Resistor
Rise Time
Fall Time
Setup Time
Hold Time
Maximum Clock
Frequency
Maximum Data Rate
Symbol
I
CKT
V
IH
V
IL
V
IN
R
IN
I
MMAX
I
MMIN
I
MDIS
I
BMAX
I
BMIN
I
BDIS
V
DISIH
V
DISIL
V
SELIH
V
SELIL
R
BM
tr
tf
ts
th
fmax
fopr
Test Conditions
DC
Differential Input
Differential Input
-
-
V
M1
=V
SS
V
DISIN
=V
DD
- 0.2 V
-
V
B1
=V
SS
V
DISIN
=V
DD
- 0.2 V
Disable operation
Enable operation
Non - Clocked op.
Clocked operation
RL = 25
20% - 80%
RL = 25
20% - 80%
V
SEL
=OPEN or
V
DD
- 0.2 V to V
DD
V
SEL
= V
DD
- 0.2 V to V
DD
Min.
-
V
DD
- 1.0
V
DD
- 1.9
0.3
-
50
-
-
50
-
-
V
DD
- 0.2
V
SS
V
DD
- 0.2
V
SS
-
-
-
-
-
2.5
2.5
Typ.
80
V
DD
- 0.9
V
DD
- 1.7
0.8
50
-
-
-
-
-
-
-
OPEN
-
OPEN
5
80
80
100
50
-
-
Max.
115
V
DD
-0.7
V
DD
- 1.6
1.2
-
-
4
1
-
4
1
V
DD
V
SS
+0.2
V
DD
V
SS
+ 0.2
-
-
-
-
-
-
-
Units
mA
V
V
VP-P
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
ps
ps
ps
ps
GHz
Gbps
Value
F0532506Q
3.3 V 2.5 Gb/s Laser Diode Driver
Block Diagram
Pin Descriptions
+
Mod.
Circuit
--
Bias
circuit
+
Input
Buffer
--
Vref
Generator
+
Input
Buffer
--
Control
Circuit
Selector
D/FF
VDDC
VDDO
VREG
VSS
DIN
VTTD
DINB
CKIN
VTTCK
CKINB
SELIN DISIN VB0 VB1
VM1
VM0
RBM
RBMOB
RBMO
OUT
OUTB
OUTBIAS
BM
BMb
Symbol
V
DDC
V
DDO
V
SS
D
IN
D
INB
V
TTD
CK
IN
CK
INB
V
TTCK
OUT
OUT
B
OUT
BIAS
V
M0
, V
M1
V
B0
, V
B1
DIS
IN
SEL
IN
BM
BM
b
V
REG
Description
Supply Voltage. V
DDC
and V
DDO
are not connected internally.
Supply Voltage.
Supply Voltage.
Positive data input
Negative data input
Termination data input
Positive clock input
Negative clock input
Termination for clock input
Positive modulation output (LD should be connected to this pin.)
Negative modulation output
Bias output. ( RBM = 5
typ., R
BMO
=R
BMOB
= 3 k
typ.)
Voltage input that sets the LD modulation peak current. V
M0
and V
M1
have different
control characteristic. If one pin is used, the other must be opened.
Voltage input that sets the LD bias current. V
B0
and V
B1
have different control
characteristic. If one pin is used, the other must be opened.
Voltage input that controls turning on/off modulation current and the bias current
Voltage input that selects clocked or non-clocked operation
Bias current monitor positive output
Bias current monitor negative output
Voltage input that regulate circuit current
3.3 V 2.5 Gb/s Laser Diode Driver
F0532506Q
Function Table
(1) Clocked Operation (V
IN
@SEL
IN
=OPEN or V
SS
to V
SS
+0.2 V)
: Clock transition from high to low
: Clock transition from low to high
: Don't care
Q
O
: Previous current output status @ OUT before clock pulse
Q
OB
: Previous current output status @ OUTB before clock pulse
(2) Non-clocked Operation (V
IN
@SEL
IN
=V
DD
-0.2 V to V
DD
)
t
u
p
n
I
t
u
p
t
u
O
D
N
I
K
C
N
I
T
U
O
@
t
n
e
r
r
u
C
B
T
U
O
@
t
n
e
r
r
u
C
H
N
O
F
F
O
L
F
F
O
N
O
Input
Output
CK
IN
D
IN
H
ON
OFF
L
OFF
ON
Current @ OUT
Current @ OUT
Q
O
Q
OB
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