参数资料
型号: LTC5100EUF#TRPBF
厂商: Linear Technology
文件页数: 43/52页
文件大小: 0K
描述: IC DRIVER VCSEL 3.2GBPS 16QFN
标准包装: 2,500
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: 带卷 (TR)
安装类型: 表面贴装
LTC5100
REGISTER DEFI ITIO S
Table 22. Register: IB_LIMIT—Laser Bias Current Limit (I 2 C Command Code 0x11)
REGISTER
RESET VALUE
.BITFIELD
.Reserved
.Ib_limit
BIT
15:7
6
5
4
3
2
(BIN)
0
0
0
0
0
FUNCTION AND VALUES
Laser Bias Current Limit
This Bit Field is an Unsigned 7-Bit Integer
Sets the Detection Level for an Over_current Fault. When the Laser Bias Current Exceeds This Level an
Over_current Fault is Generated (Provided Over_current_en is Set).
The Physical Bias Current Level is Given By:
1
0
0
0
I B(LIMIT) =
Ib_limit
128
? ( Is _ rng + 1 ) ? 9 mA ( typical )
Table 23. Register: USER_ADC—Writing (I 2 C Command Code 0x18)
REGISTER
RESET VALUE
.BITFIELD
.Reserved
.Adc_src_sel
BIT
15:3
2
1
0
(BIN)
0
0
0
FUNCTION AND VALUES
ADC Source Select
Selects the Signal to be Converted by the ADC During the User ADC Cycle
User ADC Signal Sources
Signal
Select
Signal
(Binary)
Name
Description
Scaling
000
I S
Source Current (SRC Pin I S = ADC_code/1024 ? (Is_rng + 1) ? 9mA
Current)
001
I M
Average Modulation
I M = ADC_code/1024 ? (Im_rng + 1) ? 9mA
Current (MODA +MODB
Pin Current)
010
011
V LD
I MD
Laser Diode Voltage
Monitor Diode Current
V LD = ADC_code/1024 ? 3.5V
I MD = 4.25 μ A ? 4 lmd_rng ? exp[In(8) ? ADC_code/
1024]
100
101
T
V TERM
Temperature
Termination Resistor
T( ° C) = ADC_code ? 0.5 ° C – 273 ° C
V TERM = ADC_code/1024 ? (Is_rng + 1) ? 400mV
Voltage
110
111
Reserved Reserved
Reserved Reserved
sn5100 5100fs
43
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