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參數(shù)資料
| 型號： | AD5381BSTZ-5-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 29/40頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 12BIT 40CH 5V 100-LQFP |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 產(chǎn)品變化通告： | AD5381,3 Redesign Change 24/Oct/2011 |
| 設(shè)計資源： | 40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5381 (CN0010) AD5381 Channel Monitor Function (CN0013) |
| 標準包裝： | 1 |
| 設(shè)置時間： | 6µs |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | 串行，并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 40 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 80mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-LQFP |
| 供應(yīng)商設(shè)備封裝： | 100-LQFP（14x14） |
| 包裝： | 標準包裝 |
| 輸出數(shù)目和類型： | 40 電壓，單極 |
| 采樣率（每秒）： | 167k |
| 其它名稱： | AD5381BSTZ-5-REELDKR |
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Data Sheet
AD5381
Rev. D | Page 35 of 40
12-BIT DAC
DAC
REGISTER
INPUT
DATA
INPUT
REGISTER
DATA
REGISTER
B
DATA
REGISTER
A
A/B
VOUT
LDAC
CONTROL INPUT
03732-042
Figure 42. Toggle Mode Function
OPTICAL ATTENUATORS
Based on its high channel count, high resolution, monotonic
behavior, and high level of integration,the AD5381 is ideally
targeted at optical attenuation applications used in dynamic
gain equalizers, variable optical attenuators (VOAs), and optical
add-drop multiplexers(OADMs). In these applications, each
wavelength is individually extracted using an arrayed wave
guide; its power is monitoredusing a photodiode, transimped-
ance amplifier and ADC in a closed-loop control system. The
AD5381 controls the optical attenuator for each wavelength,
ensuring that the power is equalized in all wavelengthsbefore
being multiplexed ontothe fiber. This preventsinformation loss
and saturation fromoccurring at amplification stages further
along the fiber.
UTILIZING FIFO
The AD5381 FIFO mode optimizes total systemupdate rates
in applications where a largenumber of channels needto be
updated. FIFO modeis only available when parallel interface
mode is selected. The FIFO EN pin is used to enable the FIFO.
The status of FIFO EN is sampled during the initialization
sequence. Therefore,the FIFO statuscan only be changed by
resetting the device.
In a telescope that provides for the cancel-lation of atmospheric
distortion, for example, a large numberof channels need to be
updated in a short period of time. In such systems, as manyas
400 channels need to be updated within 40 s. Four-hundred
channels require the useof 10 AD5381s. With FIFO mode
enabled, the data writecycle time is 40 ns; therefore, each group
consisting of 40 channels can be fully loaded in 1.6 s. In FIFO
mode, a completegroupof 40 chan-nels will update in 14.4 s.
The time taken to update all 400 channels is
14.4 s + 9 × 1.6 s = 28.8 s.
Figure 44 shows the FIFO operation scheme.
ATTENUATOR
AWG
FIBRE
DWDM
OUT
OPTICAL
SWITCH
11
12
1n–1
1n
DWDM
IN
AD5381,
40-CHANNEL,
12-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
03732-043
Figure 43. OADM Using the AD5381 as Part of an Optical Attenuator
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| AD5382BST-3 | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:32/40-CHANNEL 3V/5V SINGLE SUPPLY 12/14-BIT VOUT DAC - Bulk |
| AD5382BST-3-REEL | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP T/R |
| AD5382BST-5 | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:32-CHN 5V SINGLE SUPPLY 14-BIT VOUT I.C. - Bulk |
| AD5382BST-5-REEL | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP T/R |
| AD5382BSTZ-3 | 功能描述:IC DAC 14BIT 32CHAN 3V 100LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 設(shè)置時間:1µs 位數(shù):8 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:8 電壓電源:雙 ± 功率耗散（最大）:941mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC W 包裝:帶卷 (TR) 輸出數(shù)目和類型:8 電壓，單極 采樣率（每秒）:* |
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