Instruction Manual

MAX3744/MAX3745
2.7Gbps SFP Transimpedance
Amplifiers with RSSI
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= +3.3V, C
IN
= 0.85pF, T
A
= +25°C, unless otherwise noted.)
60ps/div
EYE DIAGRAM
INPUT = 2mA
P-P
, DATA RATE = 2.7Gbps
30mV/div
MAX3744 toc09
2
23
-1 PATTERN
60ps/div
EYE DIAGRAM
INPUT = 2mA
P-P
, DATA RATE = 2.1Gbps
30mV/div
MAX3744 toc08
K28-5 PATTERN
60ps/div
EYE DIAGRAM
INPUT = 20µA
P-P
, DATA RATE = 2.1Gbps
5mV/div
MAX3744 toc06
K28-5 PATTERN
50
10M 10G1G100M
FREQUENCY RESPONSE
75
60
55
70
65
MAX3744 toc03
FREQUENCY (Hz)
GAIN (dB)
60ps/div
EYE DIAGRAM
INPUT = 20µA
P-P
, DATA RATE = 2.7Gbps
6mV/div
MAX3744 toc07
2
23
-1 PATTERN
200
400
300
600
500
700
800
-40 20 40-20 0 60 80 100
INPUT-REFERRED NOISE
vs. TEMPERATURE
MAX3744 toc01
TEMPERATURE (°C)
INPUT-REFERRED NOISE (nA
RMS
)
UNFILTER
C
IN
= 1.5pF
C
IN
= 0.85pF
C
IN
= 0.5pF
200
400
300
600
500
700
800
-40 20 40-20 0 60 80 100
INPUT-REFERRED NOISE
vs. TEMPERATURE
MAX3744 toc02
TEMPERATURE (°C)
INPUT-REFERRED NOISE (nA
RMS
)
BW = 2.1GHz
C
IN
= 1.5pF
C
IN
= 0.85pF
C
IN
= 0.5pF
DETERMINISTIC JITTER
vs. INPUT AMPLITUDE
MAX3744 toc04
INPUT AMPLITUDE (mA
P-P
)
DETERMINISTIC JITTER (ps
P-P
)
10.1
10
20
30
40
50
0
0.01 10
2.7Gbp SONET
2.1Gbps FIBRE CHANNEL
60
65
70
75
-40 0 20-20 40 60 80 100
SMALL-SIGNAL TRANSIMPEDANCE
vs. TEMPERATURE
MAX3744 toc05
TEMPERATURE (°C)
TRANSIMPEDANCE (dB Ω)