MAX3869 データシートの表示（PDF） - Maxim Integrated
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MAX3869 Datasheet PDF : 15 Pages
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+3.3V, 2.5Gbps SDH/SONET Laser Driver
with Current Monitors and APC
AC ELECTRICAL CHARACTERISTICS
(VCC = +3.14V to +5.5V, load as shown in Figure 2, TA = -40°C to +85°C. Typical values are at VCC = +3.3V, IMOD = 30mA, TA = +25°C.)
(Note 7)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Latch Setup Time
Input Latch Hold Time
Modulation-Current Range
Modulation-Off Current
Modulation-Current Stability
tSU
tH
IMOD
IMOD-OFF
LATCH = high, Figure 3
LATCH = high, Figure 3
ENABLE = low (Note 4)
IMOD = 60mA
IMOD = 5mA
100
100
5
-480
-8
300
ps
ps
60
mA
200
µA
480
ppm/°C
Modulation-Current Absolute
Accuracy
(Note 5)
-15
15
%
Output Rise-Time
Output Fall- Time
tR
20% to 80% (Note 8)
tF
20% to 80% (Note 8)
MAX3869EHJ
MAX3869E/D
MAX3869EHJ
MAX3869E/D
78
ps
69
87 (Note 10)
ps
79
Output Aberrations
(Note 8)
±15
%
Enable and Start-Up Delay
250
ns
Maximum Consecutive Identical
Digits
80
bits
Pulse-Width Distortion
PWD (Notes 8, 9)
14
50
ps
Jitter Generation
Jitter BW = 12kHz to 20MHz, 0-1 pattern
7
20
psp-p
Note 1: Dice are tested at TA = +25°C only.
Note 2: Tested at RMODSET = 2.49kΩ, RBIASMAX = 1.69kΩ, excluding IBIAS and IMOD.
Note 3: Voltage on BIAS pin is (VCC - 1.6V).
Note 4: Both the bias and modulation currents will be switched off if any of the current set pins are grounded.
Note 5: Accuracy refers to part-to-part variation.
Note 6: Assuming that the laser to monitor-diode transfer function does not change with temperature. Guaranteed by design and
characterization.
Note 7: AC characteristics are guaranteed by design and characterization.
Note 8: Measured with 622Mbps 0-1 pattern, LATCH = high.
Note 9: PWD = (wider pulse - narrower pulse) / 2.
Note 10: See Typical Operating Characteristics for worst-case distribution.
DATA+
DATA-
(DATA+) - (DATA-)
IOUT+
100mV MIN
800mV MAX
200mVp-p MIN
1600mVp-p MAX
IMOD
Figure 1. Required Input Signal and Output Polarity
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