MAX3905 Datasheet, PDF (3/13 Pages) Maxim Integrated Products – 150Mbps Automotive VCSEL Driver

150Mbps Automotive VCSEL Driver
ELECTRICAL CHARACTERISTICS (continued)
(V_CC = +3.0V to +5.25V, T_J = -40°C to +140°C. Typical values are at V_CC = +5.0V and T_A = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
MOD1 open, MOD2 open
2.84 3.01 3.22
Modulation Current at T_J = +25°C
I_MOD
MOD1 V_CC, MOD2 open
MOD1 open, MOD2 V_CC
MOD1 V_CC, MOD2 V_CC
3.44 3.65 3.88
mA
4.03 4.28 4.55
4.62 4.91 5.22
Modulation Current in Low-Power
Mode
I_LP
Relative to programmed nominal, T_J = +25°C
40
50
60
%
Modulation Switching Time
Pulse-Width Variation
t_r, t_f
PWV
20% to 80% (Note 1)
(Notes 1, 2)
0.2
0.5
ns
0.97
1.03
UI
Pulse-Width Distortion
PWD (Notes 1, 2)
-0.02
+0.02
UI
Data-Dependent Jitter
DDJ (Notes 1, 2)
0.004 0.01
UI
Uncorrelated Jitter
UJ (Notes 1, 2)
0.001
UI
Deterministic Jitter
Random Jitter
IN_TTL DATA INPUT
DJ K28.5 pattern at 125Mbps (Notes 1, 3)
RJ
1-0 pattern differential input (Note 1)
85
200
ps_P-P
3
11
ps_RMS
Input Low
Input High
Input Resistance
V_INL
V_INH
-0.03
+0.80
V
2.0
V_CC + 0.3 V
4
5.75
kΩ
Input Capacitance
(Note 1)
0.3
2
pF
DIFFERENTIAL DATA INPUT
Differential-Input Sensitivity
Differential-Input Overload
Differential-Input Resistance
25
1860
8
200 mV_P-P
mV_P-P
kΩ
3DB INPUT
Input Threshold Voltage
1.5
V
3DB Input Voltage
Normal mode
Low-power mode
2.0
V
0.8
Diagnostic Resistor
DATA SQUELCH
R_GAINN V_CC > 4.75V, normal mode
R_GAINL V_CC > 4.75V, low-power mode
16
kΩ
29
Output Current While Squelched
Time to Squelch
I_OFF No input data
t_SQ (Note 1)
3
50
µA
1
8
25
µs
Time to Resume from Squelch
State
t_RS
(Note 1)
0.1
5
µs
ESD PROTECTION
IN+, IN-, TTL_IN, 3DB
Human Body Model
Machine Model
±4
kV
±400
V
Note 1: These specifications are guaranteed by design and characterization.
Note 2: Pulse-width variation, pulse-width distortion, data-dependent jitter, and uncorrelated jitter are measured at 45Mbps per
MOST specification of physical Layer (revision 1.1).
Note 3: Deterministic jitter is measured with a K28.5 pattern (0011 1110 1011 0000 0101). Deterministic jitter is the peak-to-peak
deviation from ideal time crossings, measured at the 50% crossings of the output. Differential data applied to input.
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