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參數(shù)資料
| 型號： | MAX3296EVKIT-SW |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | MAX3296 Shortwave or VCSEL (Common Cathode) Evaluation Kit |
| 中文描述： | MAX3296短波或的VCSEL（共陰極）評估板 |
| 文件頁數(shù)： | 8/28頁 |
| 文件大小： | 1446K |
| 代理商： | MAX3296EVKIT-SW |
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M
3.0V to 5.5V, 1.25Gbps/2.5Gbps
LAN Laser Drivers
8
_______________________________________________________________________________________
MODULATION
CONTROL
MODSET
TC
L = 3.9nH
L = 3.9nH
R
L
= 25
BIASDRV
(OPEN)
LASER
EQUIVALENT
LOAD
OUT-
OUT+
FERRITE BEAD*
*MURATA
BLM11HA102
0.01
μ
F
0.01
μ
F
IN+
IN-
50
50
25
R
L
R
MOD
V
CC
V
CC
V
CC
I
OUT
I
CC
V
CC
I
MOD
3/2
i
MOD
V
ID
V
ID
= V
IN+
-
V
IN-
CURRENT
I
MOD
V
IN-
V
IN+
VOLTS
TIME
100mV
P-P
MIN
830mV
P-P
MAX
200mV
P-P
MIN
1660mV
P-P
MAX
DIFFERENTIAL INPUT
RESULTING SIGNAL
MAX3286
MAX3296
Figure 1a. Output Load for AC Specification
V
CC
POR
FAULT
FAULT ON MD
RESET BY EN SHUTDOWN
BY EN
SHDNDRV
OPTICAL
OUT
EN
NOTE: TIMING IS NOT TO SCALE.
t
PORDLY
t
FAULT
t
RESET
t
SHUTDN
t
EN_RESET
Figure 1b. Fault Timing
_______________Detailed Description
The MAX3286/MAX3296 series of laser drivers contain a
bias generator with APC, laser modulator, power-on reset
(POR) circuit, and safety circuitry (Figures 2a and 2b).
Bias Generator
Figure 3 shows the bias generator circuitry containing a
power-control amplifier, controlled reference voltage,
smooth-start circuit, and window comparator. The bias
generator combined with an external PNP or NPN transis-
tor provides DC laser current to bias the laser in a light-
emitting state. When there is a monitor diode (MD) in the
laser package, the APC circuitry adjusts the laser-bias
current to maintain average power over temperature and
changing laser properties. The MD input is connected to
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| MAX3297CUE | 功能描述:激光驅(qū)動器 Integrated Circuits (ICs) RoHS:否 制造商:Micrel 數(shù)據(jù)速率:4.25 Gbps 工作電源電壓:3 V to 3.6 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-16 封裝:Tube |
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| MAX3298CUE | 功能描述:激光驅(qū)動器 RoHS:否 制造商:Micrel 數(shù)據(jù)速率:4.25 Gbps 工作電源電壓:3 V to 3.6 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-16 封裝:Tube |
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