MB85R256PF datasheet(2/15 Pages) MAXIM

2 / 15 page

2.7Gbps Laser Driver with Modulation

Compensation

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = +3.15V to +3.6V, TA = -40°C to +85°C. Typical values are at VCC = +3.3V, IBIAS = 50mA, IMOD = 40mA, TA = +25°C, unless

otherwise noted.) (Notes 1, 9)

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 VCC...............................................-0.5V to +5.0V

DATA+, DATA- and CLK+, CLK- ....(VCC - 1.5V) to (VCC + 0.5V)

RTEN, EN, BIAS, MK+, MK-, PWC+, PWC-

MODMON, BIASMON, MDMON, MODCOMP,

APCFILT1, APCFILT2, BIASMAX, MODSET,

APCSET Voltage.........................................-0.5V to VCC + 0.5V

MOD, MODN Voltage..........................................0 to VCC + 1.5V

MOD, MODN Current......................................-20mA to +150mA

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

MD Current............................................................-5mA to +5mA

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

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

Continuous Power Dissipation (TA = +85°C)

32-Pin QFN (derate 21.2mW/°C above +85°C) ...............1.3W

Processing Temperature (die) .........................................+400°C

Lead Temperature (soldering, 10s) ................................ +300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Power-Supply Current

ICC

(Note 2)

Power-Supply Noise Rejection

PSNR

f = 100kHz, 100mVP-P (Note 10)

Power-Supply Threshold

Output enabled

2.8

Single-Ended Input Resistance

Input to VCC

Ω

Bias-Current Setting Range

100

APC open loop, IBIAS = 100mA, TA = +25°C

-15

+15

Bias-Current Setting Error

APC open loop, IBIAS = 4mA, TA = +25°C

-20

+20

Bias Off-Current

EN high

0.1

IBIAS to IBIASMON Ratio

mA/mA

APC open loop, 10mA

≤ IBIAS ≤ 100mA (Note 3)

-480

+480

Bias-Current Temperature Stability

APC open loop, 4mA

≤ IBIAS ≤ 100mA (Note 3)

±390

ppm/°C

Modulation-Current Setting Range

Modulation-Current Setting Error

APC open loop, 25

Ω load, TA = +25°C

-15

+15

Modulation Off-Current

EN high

0.1

Modulation-Current Temperature

Stability

APC open loop (Note 3)

-480

+480

ppm/°C

IMOD to IMODMON Ratio

mA/mA

Modulation Compensation Range

K =

∆IMODC/∆IBIAS

1.5

mA/mA

MD Pin Voltage

1.75

Monitor Photodiode Current

Range

IMD

2000

µA

APC Loop Time Constant

tAPC

(Notes 3, 4)

1000

µs

APC Open Loop

4mA

≤ IBIAS ≤ 10mA (Note 3)

±390

VMDMON to IMD Ratio

RMDMON = 4k

Ω

0.8

1.0

1.2

mV/µA

EN and RTEN Input High

VIH

2.0

EN and RTEN Input Low

VIL

0.8

FAIL Output High

VOH

Source 150µA

2.4

FAIL Output Low

VOL

Sink 2mA

0.4

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