Typical operating characteristics – Rainbow Electronics MAX3645 User Manual
Page 4
MAX3645
+2.97V to +5.5V, 125Mbps to 200Mbps Limiting
Amplifier with Loss-of-Signal Detector
4
_______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= 3.3V, PECL outputs terminated with 50
Ω to V
CC
- 2V, R
TH
= 100
Ω, C
AZ
= 0.1µF, C
SD
= 1nF, T
A
= +25
°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
(EXCLUDES PECL OUTPUT CURRENTS)
MAX3645 toc01
TEMPERATURE (
°C)
SUPPLY CURRENT (mA)
60
35
10
-15
10
15
20
25
30
35
40
45
50
5
-40
85
V
CC
= 5.0V
V
CC
= 3.3V
OUTPUT EYE DIAGRAM
(V
IN
= 1mV
P-P
, 155Mbps, 2
23
- 1PRBS)
MAX3654 toc02
1ns/div
200mV/
div
OUTPUT EYE DIAGRAM
(V
IN
= 1500mV
P-P
, 155Mbps, 2
23
- 1PRBS)
MAX3645 toc03
1ns/div
200mV/
div
TRANSFER FUNCTION
MAX3654 toc04
DIFFERENTIAL INPUT VOLTAGE (mV
P-P
)
DIFFERENTIAL OUTPUT VOLTAGE (mV
P-P
)
10
1
0.1
600
800
1000
1200
1400
1600
1800
2000
400
0.01
100
R
TH
= 1k
Ω
R
TH
= 2k
Ω
R
TH
= 100
Ω
R
TH
= 0
Ω
BIT-ERROR RATIO vs.
DIFFERENTIAL INPUT VOLTAGE
MAX3645 toc05
DIFFERENTIAL INPUT VOLTAGE (mV
P-P
)
BIT-ERROR RATIO
0.7
0.6
0.4
0.5
0.2
0.3
0.1
10
-3
10
-4
10
-5
10
-6
10
-7
10
-8
10
-9
10
-10
10
-11
10
-12
0
0.8
155Mbps, 2
23
- 1 PRBS
INPUT-REFERRED RMS NOISE
vs. TEMPERATURE
MAX3645 toc06
TEMPERATURE (
°C)
INPUT-REFERRED NOISE (
µ
V
RMS
)
60
35
10
-15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
15
-40
85
V
CC
= +5.0V
V
CC
= +3.3V
SMALL-SIGNAL GAIN vs. R
TH
MAX3645 toc07
R
TH
(k
Ω)
20log (V
OUT
/V
IN
) (dB)
1.7
1.5
1.0
1.2
0.5
0.7
0.2
10
20
30
40
50
60
70
80
90
100
0
0
2.0
V
IN
= 0.1mV
P-P
LOSS-OF-SIGNAL THRESHOLD
vs. R
TH
(V
CC
= +3.3V AND +5.0V)
MAX3645 toc08
R
TH
(k
Ω)
DIFFERENTIAL INPUT VOLTAGE (mV
P-P
)
1.8
1.6
1.2 1.4
0.4 0.6 0.8 1.0
0.2
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
0
0
2.0
LOS DEASSERT
LOS ASSERT
155Mbps, 2
23
- 1 PRBS
LOSS-OF-SIGNAL HYSTERESIS
vs. TEMPERATURE
MAX3645 toc09
TEMPERATURE (
°C)
10log (DEASSERT/ASSERT) (dB)
60
35
10
-15
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
1.2
-40
85
R
TH
= 2k
Ω
R
TH
= 100
Ω
R
TH
= 1k
Ω
155Mbps, 2
23
- 1 PRBS