sy88232l Micrel Semiconductor, sy88232l Datasheet - Page 9

• Manufacturer Part Number: sy88232l
• Description: 2.5gbps Laser Diode Driver With Integrated Limiting Amplifier
• Manufacturer: Micrel Semiconductor

Notes:
8.
9.
10. Random jitter measured using 2.5Gbps K28.7 pattern, V
11. This specification defines electrical hysteresis as 20log (LOS De-Assert/LOS Assert). The ratio between optical hysteresis and electrical hysteresis
12. In real world applications, the LOS Release/Assert time can be strongly influenced by the RC time constant of the AC-coupling cap and the 50Ω
Micrel, Inc.
Post Amplifier
Symbol
t
t
V
(RIN)
V
(ROUT)
G
RSSI
Linearity
LOS
LOS
HSY
LOS
LOS
HSY
LOS
LOS
HSY
T
T
B
A
S
June 2009
r
JITTER
, t
Diff_IN
Diff_OUT
OFF
ON
-3dB
V(Diff)
21
RSSI
f
Amplifier in limiting mode. Input is a 200MHz square wave.
Deterministic jitter measured using 2.5Gbps K28.5 pattern, V
is found to vary between 1.5 and 2 depending upon the level of received optical power and ROSA characteristics. Based on that ratio, the optical
hysteresis corresponding to the electrical hysteresis range 1dB-4.5 dB, shown in the AC characteristics table, will be 0.5dB-3dB Optical Hysteresis.
input termination. To keep this time low, use a decoupling cap with the lowest value that is allowed by the data rate and the number of consecutive
identical bits in the application (typical values are in the range of 0.001µF to 1.0µF).
AL
DL
AM
DM
AH
DH
L
M
H
Parameter
Output Rise/Fall Time
(20% to 80%)
Deterministic
Random
Differential Input Voltage Swing
Differential Output Voltage
Swing
RSSI Gain = I
Low LOS Assert Level
Low LOS De-assert Level
Low LOS Hysteresis
Medium LOS Assert Level
Medium LOS De-assert Level
Medium LOS Hysteresis
High LOS Assert Level
High LOS De-assert Level
High LOS Hysteresis
LOS Release Time
LOS Assert Time
3dB Bandwidth
Differential Voltage Gain
Single-Ended Small-Signal
Gain
RSSI
/ V
Diff_IN
(RIN)
Condition
Note 8
Note 9
Note 10
Note 8
5mV
5mV
R
R
R
R
R
R
R
R
R
Note 12
Note 12
LOSLVL
LOSLVL
LOSLVL
LOSLVL
LOSLVL
LOSLVL
LOSLVL
LOSLVL
LOSLVL
ID
PP
PP
= 10mV
≤ V
≤ V
= 15kΩ
= 15kΩ
= 15kΩ, Note 11
= 5kΩ
= 5kΩ
= 5kΩ, Note 11
= 100Ω
= 100Ω
= 100Ω
ID
= 10mV
Diff_IN
Diff_IN
PP
.
(RIN) ≤ 200mV
(RIN) ≤ 200mV
PP
.
9
PP
PP
[e-mail]
Min
700
1.5
1.5
1.5
15
26
5
2
4
± 2.5
Typ
800
2.6
2.8
3.2
2.0
60
15
10
12
16
25
36
38
32
5
5
8
2
2
or [phone]
M9999-063009-A
SY88232L/AL
1800
Max
120
950
20
30
50
10
10
6
6
6
ps
Units
mV
mV
mV
mV
mV
mV
mV
mV
mV
ps
GHz
µA/
dB
dB
dB
dB
dB
ps
µs
µs
%
RMS
PP
PP
PP
PP
PP
PP
PP
PP
PP
PP