155Mbps to 3.2Gbps, Low-Power SFP
Limiting Amplifiers
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (V ).................................-0.5V to +4.5V
Continuous Current at CML Outputs
CC
Voltage at IN+, IN- ..........................(V
- 2.4V) to (V
+ 0.5V)
+ 0.5V)
(OUT+, OUT-) ..............................................-25mA to +25mA
CC
CC
CC
Voltage at DISABLE, LOS, TH, V
..........-0.5V to (V
Continuous Power Dissipation (T = +70°C)
REF
A
Current into LOS ...................................................-1mA to +9mA
Current into V ..................................................................2mA
Differential Input Voltage (IN+ - IN-) .....................................2.5V
10-Pin µMAX (derate 6.9mW/°C above +70°C) ...........552mW
Operating Junction Temperature Range (T ) .......-55°C to +150°C
REF
J
Storage Ambient Temperature Range (T )...........-55°C to +150°C
S
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.
ELECTRICAL CHARACTERISTICS
CC
unless otherwise specified.) (Note 1)
(V
= +2.97V to +3.63V, CML output load is 50Ω to V , T = -40°C to +85°C. Typical values are at V
= +3.3V and T = +25°C,
CC A
CC
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER SUPPLY
MAX3747 includes the CML output current
MAX3747A includes the CML output current
30
36
35
41
Supply Current (Note 2)
I
mA
dB
CC
MAX3747/MAX3747A exclude the CML
output current
18
30
24
Power-Supply Noise Rejection
INPUT SPECIFICATION
Input Sensitivity
PSNR
f < 2MHz
V
(Note 3)
(Note 3)
4
mV
P-P
IN-MIN
Input Overload
V
1200
42
mV
P-P
IN-MAX
OUTPUT SPECIFICATION
Output Resistance
R
50
15
58
Ω
OUT
Differential Output Return Loss
DUT is powered on, f < 3GHz
dB
MAX3747A 4mV
≤ V ≤ 1200mV
P-P
600
400
800
500
1000
600
P-P
IN
CML Differential Output Voltage
mV
mV
P-P
MAX3747 4mV
≤ V ≤ 1200mV
IN P-P
P-P
Differential Output Signal When
Disabled
AC-coupled outputs, V
input (Note 4)
applied to the
IN-MAX
15
P-P
Data-Output Transition Time
20% to 80% (Note 4)
70
120
ps
TRANSFER CHARACTERISTIC
K28.5 pattern at 3.2Gbps
23
13.2
14
19
25
PRBS 2 - 1 equivalent pattern at 2.7Gbps
(Note 6)
Deterministic Jitter (Notes 4, 5)
DJ
ps
P-P
K28.5 pattern at 2.1Gbps
12
17
23
PRBS 2 - 1 equivalent pattern at 155Mbps
85
150
(Note 6)
Random Jitter
V
V
= 4mV
= 4mV
(Notes 4, 7)
(Note 4)
3.5
120
6.4
5
ps
µV
IN
IN
P-P
RMS
Input-Referred Noise
Low-Frequency Cutoff
150
P-P
RMS
kHz
2
_______________________________________________________________________________________
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