MAX3747B_12 datasheet(2/11 Pages) MAXIM

Part #	MAX3747B

Description	155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifiers

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Manufacturer	MAXIM [Maxim Integrated Products]

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MAX3747A/MAX3747B

155Mbps to 3.2Gbps, Low-Power SFP

Limiting Amplifiers

2

Maxim Integrated

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = +2.97V to +3.63V, CML output load is 50Ω to VCC, TA = -40°C to +85°C. Typical values are at VCC = +3.3V and TA = +25°C,

unless otherwise specified.) (Note 1)

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.

Power-Supply Voltage (VCC) .................................-0.5V to +4.5V

Voltage at IN+, IN- ..........................(VCC - 2.4V) to (VCC + 0.5V)

Voltage at DISABLE, LOS, TH, VREF ..........-0.5V to (VCC + 0.5V)

Current into LOS ...................................................-1mA to +9mA

Current into VREF ..................................................................2mA

Differential Input Voltage (IN+ - IN-) .....................................2.5V

Continuous Current at CML Outputs

(OUT+, OUT-) ..............................................-25mA to +25mA

Continuous Power Dissipation (TA = +70°C)

10-Pin µMAX (derate 6.9mW/°C above +70°C) ...........552mW

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

Storage Ambient Temperature Range (TS)...........-55°C to +150°C

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

Soldering Temperature (reflow)............................................+260°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLY

MAX3747A including the CML output current

36

41

MAX3747B including the CML output current

38

43

MAX3747A excluding the CML output

current

18

24

Supply Current (Note 2)

ICC

MAX3747B excluding the CML output

current

20

26

mA

Power-Supply Noise Rejection

PSNR

f < 2MHz

30

dB

INPUT SPECIFICATION

Input Sensitivity

VIN-MIN

(Note 3)

4

mVP-P

Input Overload

VIN-MAX

(Note 3)

1200

mVP-P

OUTPUT SPECIFICATION

Output Resistance

ROUT

(Note 4)

42

50

58

Ω

Differential Output Return Loss

DUT is powered on, f < 3GHz

15

dB

CML Differential Output Voltage

MAX3747A/MAX3747B

4mVP-P ≤ VIN ≤ 1200mVP-P

600

800

1000

mVP-P

Differential Output Signal When

Disabled

AC-coupled outputs, VIN-MAX applied to the

input (Note 4)

15

mVP-P

Data-Output Transition Time

20% to 80% (Note 4)

70

120

ps

TRANSFER CHARACTERISTIC

K28.5 pattern at 3.2Gbps

13.2

19

PRBS 223 - 1 equivalent pattern at 2.7Gbps

(Note 6)

14

25

K28.5 pattern at 2.1Gbps

12

17

Deterministic Jitter (Notes 4, 5)

DJ

PRBS 223 - 1 equivalent pattern at 155Mbps

(Note 6)

85

150

psP-P

Random Jitter

VIN = 4mVP-P (Notes 4, 7)

3.5

5

psRMS

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