Datasheet

MAX3964A/MAX3968
+3.0V to +5.5V, 125Mbps to 266Mbps
Limiting Amplifiers with Loss-of-Signal Detector
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX3964ACEP/MAX3968CEP
(V
CC
= +3.0V to +5.5V, PECL outputs terminated with 50Ω to (V
CC
- 2V), T
A
= 0°C to +70°C, unless otherwise noted. Typical values
are at V
CC
= +3.3V and T
A
= +25°C.) (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.
(SUB, GND tied to ground)
V
CC
, V
CCO
.............................................................-0.5V to +7.0V
FILTER, RSSI, IN+, IN-, CZP, CZN, SQUELCH,
LOS+, LOS-, INV, VTH, OUT+, OUT- ......-0.5V to (V
CC
+ 0.5V)
PECL Output Current (OUT+, OUT-, LOS+, LOS-) ............50mA
Differential Voltage Between CZP and CZN..........-1.5V to +1.5V
Differential Voltage Between IN+ and IN- .............-1.5V to +1.5V
Continuous Power Dissipation (T
A
= +70°C)
20-Lead Thin QFN
(derate 16.9mW/°C above +70°C) ..........................1349mW
20-Pin QSOP (derate 6.7mW/°C above +70°C)...........500mW
Operating Temperature Range ...........................-40°C to +85°C
Operating Junction Temperature Range (die) .....-40°C to +150°C
Processing Temperature (die) ........................................+400°C
Storage Temperature Range .......................... -65°C to +160°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Supply Current I
CC
PECL outputs open 22 40 mA
LOS Hysteresis Input = 3.3mV
P-P
to 90mV
P-P
(Note 2) 3.8 5 8.0 dB
SQUELCH Input Current V
SQUELCH
= V
CC
, T
A
= +25°C 27
100
µA
PECL Output Voltage High (Note 3)
-1025 -880
mV
PECL Output Voltage Low (Note 3)
-1810 -1620
mV
PECL LOS Output Voltage High (Note 3)
-1035 -880
mV
PECL LOS Output Voltage Low (Note 3)
-1810 -1620
mV
LOS Assert Accuracy Input = 7mV
P-P
or 90mV
P-P
-2.5 +2.5
dB
Minimum LOS Assert Input 2.7
mV
P-P
Maximum LOS Deassert Input
143
mV
P-P
Input Sensitivity 2.0 3.3
mV
P-P
Input Overload 1.5 V
P-P
20% to 80% transition time, MAX3964A
0.92
1.2
2.20
Output Transition Time t
r
, t
f
MAX3968 0.4 0.8 1.2
ns
Pulse-Width Distortion (Note 4) 50
200
ps