MAX3646(2004) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX3646
(Rev.:2004)

155Mbps to 622Mbps SFF/SFP Laser Driver with Extinction Ratio Control

Maxim Integrated 

155Mbps to 622Mbps SFF/SFP

Laser Driver with Extinction Ratio Control

ABSOLUTE MAXIMUM RATINGS

Supply Voltage VCC...............................................-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 (VCC + 0.5V)

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

Continuous Power Dissipation (TA = +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

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.

ELECTRICAL CHARACTERISTICS

(VCC = +2.97V to +3.63V, TA = -40°C to +85°C. Typical values are at VCC = +3.3V, IBIAS = 60mA, IMOD = 60mA, TA = +25°C, unless

otherwise noted.) (Notes 1, 2)

PARAMETER

POWER SUPPLY

Supply Current

Power-Supply Noise Rejection

I/O SPECIFICATIONS

Differential Input Swing

SYMBOL

CONDITIONS

ICC

PSNR

(Note 3)

f ≤ 1MHz, 100mAP-P (Note 4)

VID DC-coupled, Figure 1

Common-Mode Input

VCM

LASER BIAS

Bias-Current-Setting Range

Bias Off Current

Bias-Current Monitor Ratio

LASER MODULATION

TX_DISABLE = high

IBIAS / IBC_MON

Modulation Current-Setting

Range

IMOD (Note 5)

Output Edge Speed

20% to 80%

(Notes 6, 7)

5mA ≤ IMOD ≤ 85mA

Output Overshoot/Undershoot

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

Random Jitter

(Notes 6, 7)

Deterministic Jitter (Notes 6, 8)

Modulation-Current Temperature

Stability

Modulation-Current-Setting Error

Modulation Off Current

622Mbps, 5mA ≤ IMOD ≤ 85mA

155Mbps, 5mA ≤ IMOD ≤ 85mA

(Note 6)

5mA ≤ IMOD ≤ 10mA

10mA < IMOD ≤ 85mA

15Ω load,

TA = +25°C

5mA ≤ IMOD ≤ 10mA

10mA < IMOD ≤ 85mA

TX_DISABLE = high

AUTOMATIC POWER AND EXTINCTION RATIO CONTROLS

Monitor-Diode Input Current

Range

IMD Average current into the MD pin

MD Pin Voltage

MD Current Monitor Ratio

IMD / IPC_MON

MIN

0.2

1.7

1

68

5

18

0.85

TYP MAX UNITS

47

60

mA

33

dB

2.4

VCC -

VID / 4

VP-P

V

100

mA

0.1

mA

79

95 mA/mA

85

mA

100

±6

1.1

24

45

±175

±125

200

ps

2.5

46

100

±600

±480

±20

±15

0.1

%

psRMS

psP-P

ppm/°C

%

mA

1500

µA

1.4

V

0.93 1.15 mA/mA

2 _______________________________________________________________________________________

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