MAX3297CUE Просмотр технического описания (PDF) - Maxim Integrated
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производитель
MAX3297CUE Datasheet PDF : 28 Pages
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3.0V to 5.5V, 1.25Gbps/2.5Gbps
LAN Laser Drivers
QFN/
THIN QFN
MAX3286
MAX3296
8
9
10, 22, 23,
26
11
12
14
15
16
17
18
20
21
PIN
TQFP
MAX3286
MAX3296
TSSOP-EP
MAX3287
MAX3297
MAX3289
MAX3299
TSSOP-EP
MAX3288
MAX3298
9
2
2
10
11, 25, 26,
29
12
13
15
—
3, 11, 14
4
5
7
17
—
18
—
20
8
21
—
23
9
24
10
—
3, 11, 14
4
5
7
—
—
8
9
—
10
Pin Description (continued)
NAME
FUNCTION
FLTDLY
LV
VCC
IN+
IN-
REF
POL
POL
MD
MON
SHDNDRV
BIASDRV
Fault Delay Input. Determines the delay of
the FAULT and FAULT outputs. A capacitor
attached to FLTDLY ensures proper startup
(see the Typical Operating Characteristics) .
FLTDLY = GND: holds FAULT low and
FAULT high. When FLTDLY = GND, EN =
high, EN = low, and VCC is within the
operational range, the safety circuitry is
inactive.
Low-Voltage Operation. Connect to GND for
4.5V to 5.5V operation. Leave open for 3.0V
to 5.5V operation (Table 2).
Supply Voltage
Noninverting Data Input
Inverting Data Input
Reference Voltage. A resistor connected at
REF to MD determines the laser power when
APC is used with common-cathode lasers.
Polarity Input. POL is used for programming
the laser-pinning polarity (Table 4).
Inverting Polarity Input. POL is used for
programming the laser-pinning polarity
(Table 4).
Monitor Diode Connection. MD is used for
automatic power control.
Laser Bias Current Monitor. Used for
programming laser bias current in VCSEL
applications.
Shutdown Driver Output. Provides a
redundant laser shutdown.
Bias-Controlling Transistor Driver. Connects
to the base of an external PNP or NPN
transistor.
6 _______________________________________________________________________________________
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