Datasheet

MAX3761/MAX3762
Low-Power, 622Mbps Limiting Amplifiers
with Chatter-Free Power Detect for LANs
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +4.5V to +5.5V, PECL outputs terminated with 50Ω to V
CC
- 2V, input 4mV to 2Vp-p, T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at V
CC
= +5.0V, T
A
= +25°C.) (Note 5)
Note 5: AC parameters are guaranteed by design and characterization.
Note 6: Input signal is a 1-0 pattern, 622Mbps.
Note 7: PWD = [(width of wider pulse) - (width of narrower pulse)] / 2.
T
A
= -40°C, 2
23
- 1 PRBS
(Notes 6, 7)
(Note 6)
Differential
20% to 80%
CONDITIONS
Ω3900Input Resistance
psPulse-Width Distortion
mV3.2Minimum LOS Assert Input
15 80
%20Data-Output Overshoot
ps250Data-Output Edge Speed
UNITSMIN TYP MAXPARAMETER
__________________________________________Typical Operating Characteristics
(MAX3761/MAX3762 EV kit, V
CC
= +5.0V, PECL outputs terminated with 50Ω to V
CC
- 2V, input is a 1-0 pattern, 622Mbps, T
A
= +25°C,
unless otherwise noted.)
2
23
- 1 PRBS, VTH = 1.8V dB3.5LOS Hysteresis
10
15
20
25
30
35
40
45
50
-40 -15 10 35 60 85
MAX3762
SUPPLY CURRENT vs. TEMPERATURE
MAX3761/62-01
AMBIENT TEMPERATURE (°C)
CURRENT (mA)
V
CC
= 5.5V
V
CC
= 5.0V
V
CC
= 4.5V
10 100 10001
INPUT SIGNAL (mVp-p)
RSSI VOLTAGE (V)
2.40
2.16
1.68
1.44
1.20
1.92
2.28
1.80
1.56
1.32
2.04
RSSI vs. INPUT AMPLITUDE
AND DATA PATTERN
MAX3761/62-02
2
23
- 1
PRBS PATTERN
1-0 PATTERN
2.40
1.20
-50 -40 -20 0
RSSI vs.
INPUT POWER AND FREQUENCY
1.44
2.16
MAX3761/62-03
INPUT POWER (dBm)
RSSI VOLTAGE (V)
-30 -10-45 -25 -5-35 -15
1.92
1.68
1.32
1.56
2.28
2.04
1.80
10MHz
500MHz