参数资料
型号: LTC5100EUF
厂商: Linear Technology
文件页数: 39/52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
REGISTER DEFI ITIO S
Table 16. Register: IM_TC1—Laser Modulation Current First Order Temperature Coefficient (I 2 C Command Code 0x1A)
REGISTER
RESET VALUE
.BITFIELD
.Reserved
.Im_tc1
BIT
15:8
7
6
5
4
3
2
1
0
(BIN)
0
0
0
0
0
0
0
0
FUNCTION AND VALUES
First Order Temperature Coefficient for Modulation Current
This Bit Field is a Signed 8-Bit, Two’s Complement Integer. Thus its Value Ranges from –128 to 127.
Im_tc1 Sets the First Order Temperature Coefficient for the Modulation Current. The Nominal Scaling
is 2 –13 / ° C or 122ppm/ ° C per LSB.
Table 17. Register: IM_TC2—Laser Modulation Current Second Order Temperature Coefficient (I 2 C Command Code 0x1B)
REGISTER
RESET VALUE
.BITFIELD
.Reserved
.Im_tc2
BIT
15:8
7
6
5
4
3
2
1
0
(BIN)
0
0
0
0
0
0
0
0
FUNCTION AND VALUES
Second Order Temperature Coefficient for Modulation Current
This Bit Field is a Signed 8-Bit, Two’s Complement Integer. Thus its Value Ranges from –128 to 127.
Im_tc2 Sets the Second Order Temperature Coefficient for the Laser Bias Current. The Nominal
Scaling is 2 –18 / ° C 2 or 3.81ppm/ ° C 2 per LSB.
Table 18. Register: T_EXT—External Temperature (I 2 C Command Code 0x0D)
REGISTER
RESET VALUE
.BITFIELD
.Reserved
.T_ext
BIT
15:10
9
8
7
6
5
4
3
2
1
0
(BIN)
0
0
0
0
0
0
0
0
0
0
FUNCTION AND VALUES
Externally Supplied Temperature for Temperature Compensation Calculations (Unsigned 10-Bit
Integer)
By Convention the Scaling of T_ext is 512K or 239 ° C Full Scale, Corresponding to 0.5 ° C/LSB.
However, Any Scaling is Permissible as Long as the Temperature Compensation Coefficients are Also
Appropriately Scaled.
T_ext = (T + 273 ° C)/0.5 ° C, Where T is the External Temperature in Degrees Celsius.
sn5100 5100fs
39
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