Datasheet

MAX3740A
3.2Gbps SFP VCSEL Driver with Diagnostic
Monitors
_______________________________________________________________________________________ 5
Typical Operating Characteristics
(V
CC
= +3.3V, R
TC
= 0Ω, PEAKSET open, measured electrically with a 50Ω load AC-coupled to OUT+, T
A
= +25°C, unless otherwise
noted.)
ELECTRICAL EYE
MAX3740A toc01
50ps/div
73mV/div
3.2Gbps, K28.5, 10mA MODULATION,
PEAKING OFF
ELECTRICAL EYE WITH PEAKING
MAX3740A toc02
50ps/div
73mV/div
3.2Gbps, K28.5, 10mA MODULATION,
R
PEAKSET
= 2.4kΩ
ELECTRICAL EYE WITH MAX PEAKING
MAX3740A toc03
50ps/div
73mV/div
3.2Gbps, K28.5, 10mA MODULATION,
R
PEAKSET
= 500Ω
OPTICAL EYE
MAX3740A toc04
68ps/div
E
R
= 8.2dB, 2.125Gbps, K28.5,
850nm VCSEL, WITH 2.3GHz
O-TO-E CONVERTER
EMCORE SC-TOSA-8585-3420 VCSEL
OPTICAL EYE
MAX3740A toc05
58ps/div
E
R
= 8.2dB, 2.5Gbps, K28.5,
850nm VCSEL SONET MASK
WITH +20% MARGIN
EMCORE SC-TOSA-8585-3420 VCSEL
I
BIASMON
vs. BIAS CURRENT
MAX3740A toc06
BIAS CURRENT (mA)
I
BIASMON
(mA)
1284
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
016
DETERMINISTIC JITTER
vs. MODULATION CURRENT
MAX3740A toc07
I
MOD
(mA
P-P
)
DETERMINISTIC JITTER (ps
P-P
)
105
5
10
15
20
25
30
35
40
0
015
RANDOM JITTER
vs. MODULATION CURRENT
MAX3740A toc08
I
MOD
(mA
P-P
)
RANDOM JITTER (ps
RMS
)
105
1
2
3
4
5
6
7
0
015
TRANSITION TIME
vs. MODULATION CURRENT
MAX3740A toc09
I
MOD
(mA
P-P
)
TRANSITION TIME (ps)
141210864
50
60
70
80
90
100
40
216
RISE
FALL