Rainbow-electronics MAX3646 Bedienungsanleitung PDF herunterladen (Seite 2)

MAX3646

155Mbps to 622Mbps SFF/SFP

Laser Driver with Extinction Ratio Control

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +2.97V to +3.63V, T

= -40°C to +85°C. Typical values are at V

= +3.3V, I

BIAS

= 60mA, I

MOD

= 60mA, T

= +25°C, unless

otherwise noted.) (Notes 1, 2)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Supply Voltage V

...............................................-0.5V to +6.0V

IN+, IN-, TX_DISABLE, TX_FAULT, SHUTDOWN,

BC_MON, PC_MON, APCFILT1, APCFILT2,

MD, TH_TEMP, MODTCOMP, MODBCOMP,

MODSET, and APCSET Voltage.............-0.5V to (V

+ 0.5V)

OUT+, OUT-, BIAS Current.............................-20mA to +150mA

Continuous Power Dissipation (T

= +85°C)

24-Pin QFN (derate 20.8mW/°C above +85°C) .........1805mW

Operating Junction Temperature Range...........-55°C to +150°C

Storage Temperature Range .............................-55°C to +150°C

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

POWER SUPPLY

Supply Current I

(Note 3) 47 60 mA

Power-Supply Noise Rejection

PSNR

f ≤ 1MHz, 100mA

P-P

(Note 4) 33 dB

I/O SPECIFICATIONS

Differential Input Swing V

DC-coupled, Figure 1 0.2 2.4

P-P

Common-Mode Input V

1.7

/ 4

LASER BIAS

Bias-Current-Setting Range 1 100 mA

Bias Off Current TX_DISABLE = high 0.1 mA

Bias-Current Monitor Ratio I

BIAS

/ I

BC_MON

68 79 95

mA/mA

LASER MODULATION

Modulation Current-Setting

Range

MOD

(Note 5) 5 85 mA

Output Edge Speed

20% to 80%

(Notes 6, 7)

5mA ≤ I

MOD

≤ 85mA

100

200 ps

Output Overshoot/Undershoot

(Note 7) (with 2pF between OUT+ and OUT-)

±6%

Random Jitter (Notes 6, 7) 1.1 2.5

RMS

622Mbps, 5mA ≤ I

MOD

≤ 85mA 24 46

Deterministic Jitter (Notes 6, 8)

155Mbps, 5mA ≤ I

MOD

≤ 85mA 45 100

P-P

5mA ≤ I

MOD

≤ 10mA

±175 ±600

Modulation-Current Temperature

Stability

(Note 6)

10mA < I

MOD

≤ 85mA

±125 ±480

ppm/°C

5mA ≤ I

MOD

≤ 10mA ±20

Modulation-Current-Setting Error

15Ω load,

= +25°C

10mA < I

MOD

≤ 85mA ±15

Modulation Off Current TX_DISABLE = high 0.1 mA

AUTOMATIC POWER AND EXTINCTION RATIO CONTROLS

Monitor-Diode Input Current

Range

Average current into the MD pin 18

1500

µA

MD Pin Voltage 1.4 V

MD Current Monitor Ratio I

/ I

PC_MON

0.85 0.93 1.15

mA/mA

1 2 3 4 5 6 7 ... 13 14

155Mbps to 622Mbps SFF/SFP 1

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