Instruction Manual

MAX3744/MAX3745
2.7Gbps SFP Transimpedance
Amplifiers with RSSI
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +2.97V to +3.63V and T
A
= -40°C to +85°C. Typical values are at V
CC
= +3.3V, source capacitance (C
IN
) = 0.85pF, and T
A
=
+25°C, unless otherwise noted.) (Notes 1, 2)
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.
Power-Supply Voltage (V
CC
) .................................-0.5V to +6.0V
Continuous CML Output Current
(OUT+, OUT-) ............................................. -25mA to +25mA
Continuous Input Current (IN)...............................-4mA to +4mA
Continuous Input Current (FILTER).......................-8mA to +8mA
Operating Junction Temperature Range (T
J
) ....-55°C to +150°C
Storage Ambient Temperature Range (T
STG
) ...-55°C to +150°C
Die Attach Temperature...................................................+400°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Current I
CC
Including CML output current (I
IN
= 0) 28 41 mA
Input Bias Voltage 1.0 V
Input Overload (Note 3) 2 mA
P-P
C
IN
= 0.85pF, BW = 933MHz 206
C
IN
= 0.85pF, BW = 2.1GHz 330 430
C
IN
= 0.85pF, BW = 18GHz 620
C
IN
= 0.6pF, BW = 933MHz 206
C
IN
= 0.6pF, BW = 2.1GHz 300 380
Input-Referred Noise I
N
C
IN
= 0.6pF, BW = 18GHz 550
nA
RMS
Differential Transimpedance Differential output, I
IN
= 40µA
AVE
2.8 3.5 4.5 kΩ
-3dB, C
IN
= 0.6pF 1.8 2
Small-Signal Bandwidth (Note 3) BW
-3dB, C
IN
= 0.85pF 1.6 1.8
GHz
Low-Frequency Cutoff -3dB, input current = 20µA
AVE
(Note 3) 30 kHz
2.1Gbps, K28.5 pattern 14 31
100µA
P-P
< input ≤
2mA
P-P 2.7Gbps, 2
31
-1 pattern 24
2.1Gbps, K28.5 pattern 10 16
Deterministic Jitter
(Notes 3, 5)
DJ
10µA
P-P
< input ≤
100µA
P-P
2.7Gbps, 2
31
-1 pattern 20
ps
P-P
Filter Resistance 510 580 690 Ω
Differential Output Resistance
(OUT+, OUT-)
85 100 115 Ω
Maximum Differential Output
Voltage
V
OD
Input > 50µA
AVE
, output termination 50Ω to
V
CC
(output in limited state)
220 280 400 mV
P-P