参数资料
型号: LTC5100EUF
厂商: Linear Technology
文件页数: 50/52页
文件大小: 0K
描述: IC DRIVER VCSEL 3.2GBPS 16QFN
标准包装: 91
类型: 激光二极管驱动器
数据速率: 3.2Gbps
通道数: 1
电源电压: 3.135 V ~ 3.465 V
电流 - 电源: 54mA
电流 - 调制: 12mA
工作温度: -40°C ~ 85°C
封装/外壳: 16-WQFN 裸露焊盘
供应商设备封装: 16-QFN(4x4)
包装: 管件
安装类型: 表面贴装
LTC5100
APPLICATIO S I FOR ATIO
The laser’s monitor diode (if needed) can be attached to
either pin of 2-pin header H2 (labeled MD) or to the test
turret labeled MD. H2 is a 2mm, 2-pin header with 0.5mm
square pins.
The demo board includes an EEPROM that provides non-
volatile storage for the LTC5100’s configuration settings
and parameters. For example, the EEPROM stores param-
eters for the laser bias and modulation levels as well as
temperature coefficients and fault detection modes. The
LTC5100 transfers the data in the EEPROM to its internal
registers at power up. The LTC5100 is designed for hot
plugging and can be configured to load the EEPROM and
enable the transmitter as soon as power is applied. Be
5V
P2
5V
careful with this mode of operation! It is possible to
leave the EEPROM in a state that automatically turns the
laser on at power up.
The LTC5100’s FAULT output is available at the test turret
labeled “FAULT.” The FAULT pin can be software config-
ured with several output pull-up options, including open
drain.
The demo board has three jumpers for enabling the
transmitter, observing the electrical eye diagram, and
measuring the LTC5100’s power supply current. Details of
the use of these jumpers are given in the DC499 demo
manual.
2
GND
V CC
5V ± 5%
150mA MAX
U3
LT1762EMS8-3.3
8 1 3.3V
IN OUT
7 2
NC SENSE
6 3
NC BYP NC
5 4
SHDN GND
V DD1
+
1
C4
10 μ F
I DD
JP3
2
C5
10 μ F
V DD2
+
D3
3A SCHOTTKY
R2
22.1k
R3
26.7k
3
4
+
V +
V –
U4
5 LT1812
1
V OUT
C7
0.1 μ F
R4
10 ?
R5
1.8V
D2
+
C6
10 μ F
EN
SRC
MD
22.1k
REMOVE JUMPER
3A SCHOTTKY
BEFORE ATTACHING
A LASER DIODE!
1
ENABLE
TRANS
JP1
2
1
H2
MD
2
ELEC
EYE
1
JP2
1
IN
IN
U1
MODB
SDA
GND
SCL
FAULT
IN +
IN –
J1
SMA
50 ?
50 ?
V DD
1
2
3
4
V SS
+
V SS
16 15 14 13
V SS
MODA
LTC5100
V SS
12
11
10
9
TERMINATION
RESISTOR
R1
49.9 ?
50 ?
C1
10nF
C2
10nF
(OPTIONAL)
J3
SMA
J2
P1
5V
SDA
SCL
SMA
5
6
7
8
C3
10nF
GND1
GND2
H3
SDA GND SCL
GND
GND
U2
24LC00 EEPROM
5-LEAD SOT23 PACKAGE
128 BITS
L1
BLM15AG121PN1D
LTC5100 CORE
APPLICATIONS CIRCUIT
5100 F33
Figure 33. Schematic Diagram of the DC499 Demo Board
sn5100 5100fs
50
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