SY88992LMGTR MICREL [Micrel Semiconductor], SY88992LMGTR Datasheet - Page 5

• Manufacturer Part Number: SY88992LMGTR
• Description: 3.3V, 4.25Gbps VCSEL Driver
• Manufacturer: MICREL [Micrel Semiconductor]

AC Electrical Characteristics
T
I
Notes:
5. I
6. Turn-OFF time is defined as the delay between the time the signal at /EN rises to 50% of its amplitude and the time when the output of the
7. Turn-ON time is defined as the delay between the time the signal at /EN falls to 50% of its amplitude and the time when the output of the
8. The peaking current duration is the time between the start of the peaking current, which is the same as the start of the modulation current
Test Circuit
January 2006
MOD
Symbol
t
t
t
t
(I
Max
t
A
OFF
ON
r
f
P
P
= -40°C to +80°C and V
nominal pull-up resistor of 75Ω at the output of the driver and a nominal 50Ω VCSEL equivalent resistor, 60% of that current goes to the
VCSEL.
driver reaches 10% of its steady-state amplitude.
driver reaches 90% of its steady-state amplitude.
transition, and the time when the peaking current reaches its maximum, i.e., the top of the peak.
MOD
(7)
/ I
= 13mA
(6)
MOD
is defined as the current at the output of the driver. That current splits between the pull-up network at the output and the VCSEL. For a
)
(5)
Parameter
Data Rate
Turn OFF Time
Turn ON Time
Output Current Rise Time
Output Current Fall Time
Total Jitter
Pulse-Width Distortion
Maximum Peaking Current-to-
Modulation Current Ratio
Peaking Current Duration
, and AC-coupled 50Ω load to ground with 75Ω pull-up (see Figure below).
CC
= 3.0 to 3.6V, unless otherwise noted. Typical values are at V
(8)
Condition
NRZ
50Ω load
50Ω load
20% to 80%, I
peaking, 50Ω load
20% to 80%, I
I
20% to 80%, I
peaking, 50Ω load
20% to 80%, I
I
@ 2.5Gbps data rate, 50Ω load
50Ω load
I
P
P
MOD
/I
/I
MOD
MOD
= 13mA, R
=20%, R
=20%, R
5
MOD
MOD
MOD
MOD
IPD
IPD
IPD_SET
=1.5kΩ
=1.5kΩ
= 13mA, no
= 13mA,
= 13mA, no
= 13mA,
= 0Ω
[e-mail]
Min
0.1
CC
= 3.3V, T
Typ
150
1.8
65
60
65
60
35
1
or [phone]
M9999-011306-A
Max
4.25
1.5
2.5
95
75
95
75
30
20
A
= 25°C,
Units
Gbps
ps
ns
ns
ps
ps
ps
ps
ps
ps
%
PP