MAX3748 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX3748 Datasheet PDF : 11 Pages
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Compact 155Mbps to 3.2Gbps
Limiting Amplifier
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (VCC) .................................-0.5V to +6.0V
Voltage at IN+, IN- ..........................(VCC - 2.4V) to (VCC + 0.5V)
Voltage at DISABLE, OUTPOL, RSSI,
CAZ1, CAZ2, LOS, TH............................-0.5V to (VCC + 0.5V)
Current into LOS ...................................................-1mA to +9mA
Differential Input Voltage (IN+ - IN-) .....................................2.5V
Continuous Current at CML Outputs
(OUT+, OUT-) ...............................................-25mA to +25mA
Continuous Power Dissipation (TA = +70°C)
16-Pin QFN (derate 17.7mW above +70°C) ....................1.4W
Operating Junction Temperature Range (TJ) ....-55°C to +150°C
Storage Ambient Temperature Range (Ts)........-55°C to +150°C
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.
ELECTRICAL CHARACTERISTICS
(VCC = 2.97V to 3.63V, ambient temperature = -40°C to +85°C, CML output load is 50Ω to VCC, CAZ = 0.1µF, typical values are at
+25°C, VCC = 3.3V, unless otherwise specified. The data input transition time is controlled by a 4th-order Bessel filter with f-3dB =
0.75 ✕ 2.667GHz for all data rates of 2.667Gbps and below, and with f-3dB = 0.75 ✕ 3.2GHz for a data rate of 3.2Gbps.)
PARAMETER
Single-Ended Input Resistance
Input Return Loss
Input Sensitivity
Input Overload
Single-Ended Output Resistance
Output Return Loss
Differential Output Voltage
Differential Output Signal when
Disabled
SYMBOL
VIN-MIN
VIN-MAX
CONDITIONS
Single ended to VCC
Differential, f < 3GHz, DUT is powered on
(Note 1)
(Note 1)
Single ended to VCC
Differential, f < 3GHz, DUT is powered on
Outputs AC-coupled, VIN-MAX applied to
input (Note 2)
MIN
42
1200
42
600
TYP
50
13
50
10
780
MAX
58
5
58
1200
10
UNITS
Ω
dB
mVP-P
mVP-P
Ω
dB
mVP-P
mVP-P
K28.5 pattern at 3.2Gbps
8.5
25
Deterministic Jitter
(Notes 2, 3)
223- 1 PRBS equivalent pattern at 2.7Gbps
DJ
(Note 4)
K28.5 pattern at 2.1Gbps
223- 1 PRBS equivalent pattern at 155Mbps
9.3
30
psP-P
7.8
25
25
50
Random Jitter
(Note 5)
Input = 5mVP-P
Input = 10mVP-P
6.5
3
psRMS
Data Output Transition Time
20% to 80% (Note 2)
86
115
ps
Input-Referred Noise
185
µVRMS
Low-Frequency Cutoff
CAZ = open
CAZ = 0.1µF
70
kHz
0.8
Power-Supply Current
(Note 6)
ICC
LOS disabled
32
49
mA
37
Power-Supply Noise Rejection
PSNR f < 2MHz
26
dB
LOSS OF SIGNAL at 2.5Gbps (Notes 2, 7)
LOS Hysteresis
10log (VDEASSERT/VASSERT)
1.25 2.2
dB
LOS Assert/Deassert Time
(Note 8)
2
100
µs
Low LOS Assert Level
RTH = 20kΩ
2.8
4.1
mVP-P
Low LOS Deassert Level
Medium LOS Assert Level
RTH = 20kΩ
RTH = 280Ω
10.3
6.7
15.2
11.6
mVP-P
mVP-P
2 _______________________________________________________________________________________
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