MAX3656ETG+T Maxim Integrated Products, MAX3656ETG+T Datasheet - Page 4

• Manufacturer Part Number: MAX3656ETG+T
• Description: IC LASR DRVR 2.5GBPS 3.6V 24TQFN
• Manufacturer: Maxim Integrated Products
• Type: Laser Diode Driver (Fiber Optic)r

Specifications of MAX3656ETG+T

• Data Rate: 2.5Gbps
• Number Of Channels: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 40mA
• Current - Modulation: 85mA
• Current - Bias: 70mA
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 24-TQFN Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX3656ETG+T; MAX3656ETG+TTR

155Mbps to 2.5Gbps Burst-Mode
Laser Driver
ELECTRICAL CHARACTERISTICS (continued)
(Typical values are at V
4
Note 1: Excludes I
Note 2: For safety purposes, both the bias and modulation currents are switched off if any of the current set pins (BIASMAX, MODSET)
Note 3: Accuracy refers to part-to-part variation.
Note 4: APC loop initialization definitions:
Note 5: I
Note 6: I
Note 7: I
Note 8: Rise and fall times are measured as 20% to 80% of the output amplitude with a repeating 0000011111.
Note 9: Deterministic jitter is measured with a continuous data pattern (no bursting) of 2
Note 10: Measured electrically with a resistive load matched to the laser driver output.
Note 11: Enable delay is measured between (1) the time at which the rising edge of the differential burst enable input signal reach-
Note 12: Disable delay is measured between (1) the time at which the falling edge of the differential burst enable input signal reaches
Note 13: Guaranteed by design and characterization.
BURST-MODE SPECIFICATIONS
Burst Enable Delay
Burst Disable Delay
Burst On-Time (Note 13)
Burst Off-Time (Note 13)
OPTICAL EVALUATION
Optical Eye Diagram Mask
Margin
_______________________________________________________________________________________
PARAMETER
are grounded.
I
resistor.
Initialization Case 1: Continuous Mode Power-Up. In this case, EN = low, BEN = high, and then V
0V to ≥3.0V.
Initialization Case 2: Chip-Enable Reset. In this case, 3.0V ≤ V
Initialization Case 3: Burst-Mode Startup. In this case, 3.0V ≤ V
burst following the transition of BEN from low to high. For the shortest burst on- and off-time (576ns and 96ns), this trans-
lates to 1.92µs from when BEN toggles from low to high for the first time after startup.
PRBS + 80 consecutive zeros.
es the midpoint of the voltage swing, and (2) the time at which the combined output currents (bias and modulation) reach
90% of the final level set by R
settled to within 10% of their final values). See Figure 1. Measurement done for 10mA ≤ I
70mA.
the midpoint of the voltage swing, and (2) the time at which the combined output currents (bias and modulation) fall below
10% of the bias on current (after transients have settled). See Figure 1. Measurement done for 10mA ≤ I
4mA ≤ I
BIAS
BIAS
BIAS
BIAS
error is less than 3.8mA (for an extinction ratio of 10dB and I
error is less than 3.8mA (for an extinction ratio of 10dB and I
error must be less than 3.8mA (for an extinction ratio of 10dB and I
Error: I
BIAS
BIAS
≤ 70mA.
BIAS
CC
and I
= +3.3V, I
- I
BIASSET
MOD
SYMBOL
. Maximum value is specified at I
BIAS
t
t
, where I
B-OFF
B-ON
APCSET
= 20mA, I
BIAS
APC closed loop (Notes 10, 11, 13)
APC closed loop (Notes 10, 12, 13)
155Mbps
622Mbps
1.25Gbps, 2.5Gbps
155Mbps
622Mbps
1.25Gbps, 2.5Gbps
ExceLight
SLT2886-LR
laser diode
(or equivalent)
, R
BIASMAX
= the actual bias current and I
MOD
= 25mA, extinction ratio = 10dB, and T
, and R
CONDITIONS
155.52Mbps
622.08Mbps
1.24416Gbps
2.48832Gbps
MODSET
MOD
CC
= 85mA, I
CC
MD
(after all transients such as overshoot, ringing, etc., have
≤ 3.6V, BEN = high, and then EN changes from high to low.
MD
≤ 3.6V, EN = low, and then BEN changes from low to high.
= 1500µA) within 2.1µs (typ) from the time that EN < 0.8V.
= 1500µA) within 12µs from the time that V
BIASSET
MD
BIAS
= 1500µA) at or before the end of the third
= 70mA, and I
= the level of bias current set by the R
7
- 1 PRBS + 80 consecutive ones + 2
A
2881
= +25°C, unless otherwise noted.)
MIN
720
576
192
96
96
MOD
MD
≤ 85mA and 4mA ≤ I
= 1.5mA.
TYP
45
40
31
24
CC
is ramped up from
MOD
MAX
2.3
2.0
≤ 85mA and
CC
BIAS
UNITS
APCSET
≥ 3.0V.
ns
ns
ns
ns
%
7
- 1
≤