MAX3940ESLASHD datasheet(2/13 Pages) MAXIM

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10Gbps EAM Driver with Integrated

Bias Network

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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

Voltage at MODEN,

RTEN, PLRT, MODSET, BIASSET ...........(VEE - 0.5V) to +0.5V

Voltage at DATA+, DATA-, CLK+, and CLK-……-1.65V to +0.5V

Voltage at OUT .............................................……….-4V to +0.5V

Voltage at PWC+, PWC- ...................(VEE - 0.5V) to (VEE + 1.7V)

Current into or out of OUT..............................……………...80mA

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

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

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

ELECTRICAL CHARACTERISTICS

(VEE = -5.5V to -4.9V, TA = -40°C to +85°C. Typical values are at VEE = -5.2V, IBIAS = 30mA, IMOD = 100mA, and TA = +25°C, unless

otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Power-Supply Voltage

VEE

-5.5

-4.9

Retime disabled

122

170

Supply Current

IEE

Excluding IBIAS and

IMOD (Note 1)

Retime enabled

139

195

Power-Supply Noise Rejection

PSNR

≤ 10MHz (Note 2), see Figure 4

SIGNAL INPUT (Note 3)

Input Data Rates

NRZ

10.7

Gbps

Single-Ended Input Resistance

RIN

Input to GND (Note 3)

42.5

58.5

Ω

DC-coupled, Figure 1a

-1

Single-Ended Input Voltage

VIS

AC-coupled, Figure 1b

-0.4

+0.4

DC-coupled (Note 4)

0.2

2.0

Differential Input Voltage

VID

AC-coupled (Note 4)

0.2

1.6

VP-P

≤ 10GHz

Differential Input Return Loss

RLIN

(Note 3)

10GHz < f

≤ 15GHz

EAM BIAS

Maximum Bias Current

VBIASSET = VEE + 2V

Minimum Bias Current

VBIASSET = VEE

0.3

BIASSET Voltage Range

VBIASSET

VEE

VEE + 2

Equivalent Bias Resistance

RBSEQV

(Note 5)

36.4

Ω

VBIASSET = VEE + 0.11V

2.1

3.9

VBIASSET = VEE + 0.36V

8.8

11.2

Bias-Current-Setting Accuracy

TA = +25

°C

VBIASSET = VEE + 2.0V

VBIASSET < VEE + 0.36V

-1300

+1300

Bias-Current Temperature

Stability

(Note 6)

VBIASSET

≥ VEE + 0.36V

-480

+480

ppm/°C

BIASSET Input Resistance

Ω

BIASSET Bandwidth

Ω driver load, VBIASSET = VEE + 0.55V,

Figure 2

MHz

EAM MODULATION

Maximum Modulation Current

VMODSET = VEE + 1V

120

127

mAP-P

Minimum Modulation Current

VMODSET = VEE

mAP-P

MODSET Voltage Range

VMODSET

VEE

VEE + 1

Equivalent Modulation Resistance

RMODEQV

(Note 7)

11.1

Ω

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