AD5380BST-3-REEL Analog Devices Inc, AD5380BST-3-REEL Datasheet - Page 36

• Manufacturer Part Number: AD5380BST-3-REEL
• Description: IC DAC 14BIT I2C 40CH 100-LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD5380BST-3-REEL

• Rohs Status: RoHS non-compliant
• Design Resources: 40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5380 (CN0007) Output Channel Monitoring Using AD5380 (CN0008)
• Settling Time: 6µs
• Number Of Bits: 14
• Data Interface: I²C, Parallel, Serial
• Number Of Converters: 40
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 125mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• For Use With: EVAL-AD5380EB - BOARD EVAL FOR AD5380

AD5380
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.
DWDM
IN
FIBRE
AWG
Figure 44. OADM Using the AD5380 as Part of an Optical Attenuator
11
12
1n–1
1n
PORTS
ADD
OPTICAL
SWITCH
CONTROLLER
40-CHANNEL,
PORTS
14-BIT DAC
DROP
AD5380,
Rev. A | Page 36 of 40
ATTENUATOR
ATTENUATOR
ATTENUATOR
ATTENUATOR
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.
N:1 MULTIPLEXER
16-BIT ADC
PHOTODIODES
TIA/LOG AMP
(AD8304/AD8305)
ADG731
(40:1 MUX)
AD7671
(0V TO 5V, 1MSPS)
AWG
FIBRE
DWDM
OUT