MAX3645 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX3645
Maxim Integrated
MAX3645 Datasheet PDF : 10 Pages
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+2.97V to +5.5V, 125Mbps to 200Mbps Limiting
Amplifier with Loss-of-Signal Detector
Typical Operating Characteristics
(VCC = 3.3V, PECL outputs terminated with 50Ω to VCC - 2V, RTH = 100Ω, CAZ = 0.1µF, CSD = 1nF, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
(EXCLUDES PECL OUTPUT CURRENTS)
50
45
40
35
30
25
VCC = 5.0V
20
15
VCC = 3.3V
10
5
-40 -15
10
35
60
85
TEMPERATURE (°C)
OUTPUT EYE DIAGRAM
(VIN = 1mVP-P, 155Mbps, 223 - 1PRBS)
MAX3654 toc02
200mV/
div
1ns/div
OUTPUT EYE DIAGRAM
(VIN = 1500mVP-P, 155Mbps, 223 - 1PRBS)
MAX3645 toc03
200mV/
div
1ns/div
TRANSFER FUNCTION
2000
1800
RTH = 0Ω
1600 RTH = 100Ω
1400
1200
1000
RTH = 1kΩ
800
RTH = 2kΩ
600
400
0.01
0.1
1
10
100
DIFFERENTIAL INPUT VOLTAGE (mVP-P)
SMALL-SIGNAL GAIN vs. RTH
100
90
80
70
60
50
40
30
20
10 VIN = 0.1mVP-P
0
0 0.2 0.5 0.7 1.0 1.2 1.5 1.7 2.0
RTH (kΩ)
BIT-ERROR RATIO vs.
DIFFERENTIAL INPUT VOLTAGE
10-3
155Mbps, 223 - 1 PRBS
10-4
10-5
10-6
10-7
10-8
10-9
10-10
10-11
10-12
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
DIFFERENTIAL INPUT VOLTAGE (mVP-P)
LOSS-OF-SIGNAL THRESHOLD
vs. RTH (VCC = +3.3V AND +5.0V)
30
28 155Mbps, 223 - 1 PRBS
26
24
22
20
18
16
LOS DEASSERT
14
12
10
8
6
LOS ASSERT
4
2
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
RTH (kΩ)
INPUT-REFERRED RMS NOISE
vs. TEMPERATURE
85
80
75
70
65
60
55
50
VCC = +5.0V
45
40
35
30
25
VCC = +3.3V
20
15
-40 -15
10
35
60
85
TEMPERATURE (°C)
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
-40
LOSS-OF-SIGNAL HYSTERESIS
vs. TEMPERATURE
155Mbps, 223 - 1 PRBS
RTH = 2kΩ
RTH = 100Ω
RTH = 1kΩ
-15
10
35
60
85
TEMPERATURE (°C)
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