MAX3748 datasheet(2/13 Pages) MAXIM

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Compact 155Mbps to 4.25Gbps

Limiting Amplifier

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = 2.97V to 3.63V, ambient temperature = -40°C to +85°C, CML output load is 50

Ω to VCC, CAZ = 0.1µF, typical values are at

+25°C, VCC = 3.3V, unless otherwise specified. The data input transition time is controlled by a 4th-order Bessel filter with f-3dB =

0.75 ✕ 2.667GHz for all data rates of 2.667Gbps and below, and with f-3dB = 0.75 ✕ data rate for data rates > 3.2Gbps.)

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 +6.0V

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

Voltage at DISABLE, OUTPOL, RSSI,

CAZ1, CAZ2, LOS, TH............................-0.5V to (VCC + 0.5V)

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

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

Continuous Current at CML Outputs

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

Continuous Power Dissipation (TA = +70°C)

TQFN (derate 17.7mW above +70°C)..............................1.4W

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

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

Lead Temperature (soldering, 10s) .................................+260°C

Soldering Temperature (reflow)

TQFN............................................................................+240°C

Hybrid TQFN ................................................................+250°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Single-Ended Input Resistance

Single ended to VCC

Input Return Loss

Differential, f < 3GHz, DUT is powered on

Input Sensitivity

VIN-MIN

(Note 1)

mVP-P

Input Overload

VIN-MAX

(Note 1)

1200

mVP-P

Single-Ended Output Resistance

Single ended to VCC

Output Return Loss

Differential, f < 3GHz, DUT is powered on

Differential Output Voltage

600

780

1200

mVP-P

Differential Output Signal when

Disabled

Outputs AC-coupled, VIN-MAX applied to

input (Note 2)

mVP-P

K28.5 pattern at 4.25Gbps

8.7

K28.5 pattern at 3.2Gbps

8.5

223- 1 PRBS equivalent pattern at 2.7Gbps

(Note 4)

9.3

K28.5 pattern at 2.1Gbps

7.8

Deterministic Jitter

(Notes 2, 3)

223- 1 PRBS equivalent pattern at 155Mbps

psP-P

Input = 5mVP-P

6.5

Random Jitter

(Note 5)

Input = 10mVP-P

psRMS

20% to 80%, 4.25Gbps

3.1875GHz Bessel input filter

VIN = 20mVP-P

Data Output Transition Time

20% to 80% (Note 2)

115

Input-Referred Noise

185

μVRMS

CAZ = open

Low-Frequency Cutoff

CAZ = 0.1μF

0.8

kHz

(Note 6)

Power-Supply Current

ICC

LOS disabled

Power-Supply Noise Rejection

PSNR

f < 2MHz

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