
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 50 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 MAX (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
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