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| 型号： | AD5255 |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | 18 Bit, 1.25MSPS Single Channel Delta-Sigma ADC Single 64-HTQFP -40 to 85 |
| 中文描述： | 3通道数字电位器的非易失性存储器 |
| 文件页数： | 19/20页 |
| 文件大小： | 626K |
| 代理商： | AD5255 |
AD5255
APPLICATIONS
LASER DIODE DRIVER (LDD) CALIBRATION
The AD5255 can be used with any laser diode driver. Its high
resolution, compact footprint, and superior temperature drift
characteristics make it ideal for optical parameter setting.
Rev. 0 | Page 19 of 20
The ADN2841 is a 2.7 Gbps laser diode driver that uses a
unique control algorithm to manage both the laser average
power and extinction ratio after initial factory calibration. It
stabilizes the laser data transmission by continuously
monitoring its optical power and by correcting the variations
caused by temperature and the laser degradation over time. In
the ADN2841, the I
MPD
monitors the laser diode current.
Through its dual-loop power and extinction ratio control,
calibrated by the AD5255, the internal driver controls the bias
current I
BIAS
and consequently the average power. It also
regulates the modulation current, I
MODP
, by changing the
modulation current linearly with slope efficiency. Any changes
in the laser threshold current or slope efficiency are, therefore,
compensated. As a result, this optical supervisory system
minimizes the laser characterization efforts, enabling designers
to apply comparable lasers from multiple sources.
AD5255
ADN2841
SDA
SCL
PSET
ERSET
ASET
V
CC
V
CC
0
Figure 33. Optical Supervisory System
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5255BRU25 | 制造商:Analog Devices 功能描述:DGTL POTENTIOMETER 512POS 25KOHM TRIPLE 24TSSOP - Rail/Tube |
| AD5255BRU250 | 制造商:Analog Devices 功能描述:DGTL POTENTIOMETER 512POS 250KOHM TRIPLE 24TSSOP - Rail/Tube |
| AD5255BRU250-RL7 | 制造商:Analog Devices 功能描述:DGTL POTENTIOMETER 512POS 250KOHM TRIPLE 24TSSOP - Tape and Reel |
| AD5255BRU25-RL7 | 制造商:Analog Devices 功能描述:DGTL POTENTIOMETER 512POS 25KOHM TRIPLE 24TSSOP - Tape and Reel |
| AD5255BRUZ25 | 制造商:Analog Devices 功能描述:Digital Potentiometer 512POS 25KOhm Triple 24-Pin TSSOP 制造商:Analog Devices 功能描述:DGTL POTENTIOMETER 512POS 25KOHM TRIPLE 24TSSOP - Rail/Tube 制造商:Analog Devices 功能描述:DIGIPOT I2C NV MEMORY 5K SMD 5255 |
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