参数资料
型号: AD5380BSTZ-3
厂商: Analog Devices Inc
文件页数: 30/40页
文件大小: 0K
描述: IC DAC 14BIT 40CHAN 3V 100LQFP
产品培训模块: Data Converter Fundamentals
DAC Architectures
产品变化通告: Redesign Change 28/Oct/2011
设计资源: 40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5380 (CN0007)
Output Channel Monitoring Using AD5380 (CN0008)
标准包装: 1
设置时间: 6µs
位数: 14
数据接口: I²C,并联,串行
转换器数目: 40
电压电源: 单电源
功率耗散(最大): 125mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-LQFP(14x14)
包装: 托盘
输出数目和类型: 40 电压,单极
采样率(每秒): 125k
AD5380
Data Sheet
Rev. C | Page 36 of 40
OPTICAL ATTENUATORS
Based on its high channel count, high resolution, monotonic
behavior, and high level of integration, the AD5380 is ideally
targeted at optical attenuation applications used in dynamic
gain equalizers, variable optical attenuators (VOA), and optical
add-drop multiplexers (OADM). In these applications, each
wavelength is individually extracted using an arrayed wave
guide; its power is monitored using a photodiode, transim-
pedance amplifier and ADC in a closed-loop control system.
The AD5380 controls the optical attenuator for each
wavelength, ensuring that the power is equalized in all
wavelengths before being multiplexed onto the fiber. This
prevents information loss and saturation from occurring at
amplification stages further along the fiber.
ATTENUATOR
AWG
FIBRE
DWDM
OUT
OPTICAL
SWITCH
11
12
1n–1
1n
DWDM
IN
AD5380,
40-CHANNEL,
14-BIT DAC
N:1 MULTIPLEXER
16-BIT ADC
CONTROLLER
TIA/LOG AMP
(AD8304/AD8305)
ADG731
(40:1 MUX)
AD7671
(0V TO 5V, 1MSPS)
PHOTODIODES
ADD
PORTS
DROP
PORTS
03731-044
Figure 44. OADM Using the AD5380 as Part of an Optical Attenuator
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