MAX3297CUE Просмотр технического описания (PDF) - Maxim Integrated
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MAX3297CUE Datasheet PDF : 28 Pages
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3.0V to 5.5V, 1.25Gbps/2.5Gbps
LAN Laser Drivers
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +5.5V, TA = 0°C to +70°C, unless otherwise noted. Typical values are at VCC = +3.3V, RTC = open and TA = +25°C;
see Figure 1a.)
PARAMETER
FLTDLY Duration
EN or EN Minimum Pulse Width
Required to Reset a Latched
Fault
FAULT Reset after EN, EN, or
POR Transition
SYMBOL
tFLTDLY
tEN_RESET
tRESET
CONDITIONS
CFLTDLY = 0
CFLTDLY = 270pF
MAX3286/MAX3296 only, Figure 1b,
CFLTDLY = open
MAX3286/MAX3296 only, Figure 1b,
CFLTDLY = 0.01µF
MAX3286/MAX3296 only, Figure 1b
MIN TYP MAX UNITS
0.2
1
µs
100
140
6
10
ns
6
µs
1
2
µs
SHDNDRV Asserted after EN =
Low or EN = High
tSHUTDN
MAX3286/MAX3296 only, Figure 1b
3.5
5.5
µs
Note 1: Common-anode configuration refers to a configuration where POL = GND, POL = VCC, and an NPN device is used to set
the laser bias current. Common-cathode configuration refers to a configuration where POL = VCC, POL = GND, and a PNP
device is used to set the laser bias current.
Note 2: Deterministic jitter measured with a repeating K28.5 bit pattern 00111110101100000101. Deterministic jitter is the peak-to-
peak deviation from the ideal time crossings per ANSI X3.230, Annex A.
Note 3: For Fibre Channel and Gigabit Ethernet applications, the peak-to-peak random jitter is 14.1 times the RMS jitter.
Note 4: Delay from a fault on MD until FAULT is asserted high.
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
100,000
POR DELAY vs. CPORDLY
10,000
FLTDLY DURATION vs. CFLTDLY
10,000
1000
1000
100
100
10
10
1
10
100
1000 10,000 100,000
CAPACITANCE (pF)
1
1
10
100
1000 10,000
CAPACITANCE (pF)
EYE DIAGRAM
50ps/div
2.5Gbps, 1310nm LASER, 27 - 1 PRBS, IMOD = 15mA
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